The Complete List of SIP Manufacturers in North America

LAST UPDATED: APRIL, 2026

This list includes verified Structural Insulated Panel (SIP) manufacturers across the United States, Canada, and Mexico. Each company listed actively manufactures SIP panels, not just distributes or installs them.

How Many SIP Manufacturers Are in North America?

There are approximately 40 to 45 active Structural Insulated Panel (SIP) manufacturers across North America, including the United States, Canada, and Mexico. This includes manufacturers producing EPS, GPS, PUR/PIR, and MgO-based SIP systems.

Who Are the SIP Manufacturers in North America?

When builders, architects, or manufacturers reach out to PGS Consulting, one of the first questions is usually straightforward: Who actually manufactures Structural Insulated Panels in North America?

The SIP industry includes a mix of manufacturers, resellers, installers, and panelized builders. Many companies offer SIP packages or design services, but do not actually manufacture panels. That distinction matters when evaluating performance, code compliance, and system consistency.

Because the industry is relatively fragmented, publicly available lists are often incomplete, outdated, or include companies that are no longer producing SIPs.

How This SIP Manufacturer List Was Built

To provide a clearer picture of the industry, this list was developed through a combination of:

• SIPA member directory review
• ICC-ES and CCMC code report verification
• Manufacturer website validation
• Historical industry data
• Independent research and direct confirmation

The goal is simple: Provide a clean, manufacturer-only list. No resellers. No installers. No kit-only providers

Need Help Evaluating SIP Manufacturers?

Not all SIP manufacturers are the same, and the differences are not always obvious on the surface.

Joe Pasma, PE works with builders, manufacturers, and design teams to evaluate SIP systems based on engineering, manufacturing, and installation considerations.

If you are comparing manufacturers or trying to determine the best fit for your project, PGS Consulting can help bring clarity to the decision.

Learn more about PGS Consulting →

Complete List of SIP Manufacturers in North America (2026)

The table below includes verified SIP manufacturers across the United States, Canada, and Mexico. This list focuses on companies that actively produce Structural Insulated Panels. The table below lists SIP manufacturers across North America by location, core type, facing materials, and code compliance. On mobile, swipe left to view the full table.

SIP Manufacturer	City, State	Inception	Core Type	Facing Type	Website	SIPA Member	Code Report
ACME Panel	Radford, VA	2009	EPS	OSB	acmepanel.com	Yes	ICC-ES ESR-4690 (04-2026)
APEX SIPs	Tulsa, OK	2009	EPS	OSB	apexsips.com	No	ICC-ES ESR-4693 (04-2026)
Big Sky R-Control SIPs	Belgrade, MT	1977	EPS	OSB	bigskycontrol.com	No	ICC-ES ESR-2233 (06-2026)
Eagle Panel Systems	Mulberry Grove, IL	1996	EPS	OSB	eaglepanelsystems.com	No	ICC-ES ESR-4782 (02-2026)
Ecopan	Alberta, Canada	1991	EPS	OSB	sipstech.com	No	ICC-ES ESR-3159 (04-2026)
EcoPanels	Mocksville, NC	2007	PUR	ZIP OSB, OSB, Plywood	eco-panels.com	No	No
Enercept	Watertown, SD	1982	EPS	OSB	enercept.com	Yes	ICC-ES ESR-4693 (04-2026)
EPS Buildings	IA / MO	1986	EPS	OSB	epsbuildings.com	Yes	ICC-ES ESR-4694 (04-2026)
EnerSIP	Manitoba, Canada	2000	EPS	OSB	enersip.com	No	CCMC 13016-R
Extreme Panel Technologies	Minnesota	1992	EPS, GPS	OSB	extremepanel.com	Yes	ICC-ES ESR-4524 (02-2026)
FischerSIPS	Louisville, KY	1986	EPS	OSB	fischersips.com	Yes	ICC-ES ESR-4694 (04-2026)
Foam Laminates	Vermont	1982	EPS, GPS	OSB	foamlaminates.com	No	IAPMO UES 786 (03-2026)
Foard Panel	New Hampshire	1985	EPS	OSB	foardpanel.com	Yes	ICC-ES ESR-4691 (04-2026)
Greenix Panels	Georgia	2003	PUR	OSB, MgO	greenixpanels.com	No	No
ICS Eco-SIPS	Colorado	2004	PUR	OSB	ics-m.com	No	No
Insulspan	Michigan	-	EPS, GPS	OSB	insulspan.com	Yes	CCMC
MagWall	Alberta, Canada	2008	EPS	MgO	magwall.com	No	No
Murus	Pennsylvania	1987	EPS, GPS	OSB	murus.com	Yes	ICC-ES ESR-4784 (04-2026)
OMC Panels	Alberta, Canada	-	EPS	Plywood	omcpanels.com	No	No
Porter	Michigan	1964	EPS	OSB	porterps.com	Yes	ICC-ES ESR-4692 (04-2026)
Premier SIPS	MT / WA	1977	EPS, GPS	OSB	premiersips.com	Yes	ICC-ES ESR-4524 (02-2027)
RAY-CORE SIPs	Idaho	1987	PUR	Foil	raycore.com	No	ICC-ES ESR-4780 (04-2026)
R-Control SIPs	Texas	-	EPS	OSB	rcontrol.com	No	ICC-ES ESR-4783 (04-2026)
sPanels	Idaho	-	EPS	OSB	spanels.com	No	ICC-ES ESR-2182
SIPS of America	Missouri	-	EPS	OSB	sipsofamerica.com	No	No
Structural Panel Innovations	Kansas	-	EPS	OSB	structuralpanelinnovations.com	No	No
Thermocore	Ontario, Canada	1980	EPS	OSB	thermocore.com	No	ICC-ES ESR-4525 (02-2027)
Urban Industries	Ohio	-	EPS	OSB	urbanindustries.com	No	ICC-ES ESR-4695 (04-2026)
ZS2 Technologies	Alberta, Canada	-	EPS	MgO	zs2technologies.com	Yes	ICC-ES ESR-5346 (02-2028)

This list is updated regularly to reflect active SIP manufacturers and current code compliance data.

Understanding SIP Core Types

Not all Structural Insulated Panels are built the same. While the concept of SIP construction is consistent, manufacturers differentiate themselves through the type of insulation core and facing materials used. These choices directly affect thermal performance, structural behavior, cost, and how the system performs in different environments.

Understanding the core types is one of the first steps in evaluating SIP manufacturers.

EPS (Expanded Polystyrene)

EPS is the most widely used core material in the SIP industry.

It is cost-effective, stable, and broadly recognized within building codes. EPS-based SIPs are commonly used across residential and light commercial construction due to their balance of performance and affordability.

EPS systems are also well understood by most design and construction teams, which can simplify both engineering and installation.

GPS (Graphite Polystyrene)

GPS is a modified version of EPS that includes graphite to improve thermal performance.

This results in a higher R-value per inch compared to standard EPS. GPS is often used in projects where improved energy performance is a priority but where the overall system approach remains similar to EPS construction.

Not all manufacturers offer GPS, so availability can vary.

PUR / PIR (Polyurethane-Based Systems)

PUR and PIR SIPs offer higher thermal performance and tighter manufacturing tolerances.

These systems are often used in projects that require increased insulation performance or more controlled manufacturing conditions. PUR/PIR panels can also offer different structural and bonding characteristics compared to EPS-based systems.

However, they are typically produced by a smaller group of manufacturers and may be more expensive.

MgO-Faced SIPs

MgO (magnesium oxide) faced SIPs are a growing category within the industry.

Instead of traditional OSB facings, these panels use MgO boards, which offer different fire resistance and moisture performance characteristics. These systems are often selected for specific applications where non-combustibility or durability is a priority.

As with any system, proper engineering and installation are critical to performance.

The choice of core type should always be evaluated in the context of the full building system, not as a standalone product decision.

How to Choose the Right SIP Manufacturer

Selecting a Structural Insulated Panel (SIP) manufacturer is not just a product decision. It is a system decision that affects engineering, manufacturing, installation, and long-term building performance.

While many manufacturers offer similar panel types, the differences in how those panels are designed, produced, and supported can significantly impact project outcomes.

Here are the key factors to evaluate:

Core Type and Performance Requirements

Start with the insulation core.

Most SIP manufacturers produce panels using one or more of the following:

• EPS (expanded polystyrene)
• GPS (graphite polystyrene)
• PUR or PIR (polyurethane-based systems)
• MgO-faced panel systems

Each core type offers different performance characteristics related to R-value, moisture behavior, fire resistance, and cost. The right choice depends on your climate, building type, and performance goals.

Code Compliance and Engineering Support

Not all SIP systems are evaluated the same way.

Look for manufacturers with:

• ICC-ES or CCMC code reports
• third-party testing and validation
• documented structural and thermal performance

Equally important is the level of engineering support provided. A strong manufacturer will help align panel design with structural loads, spans, and project requirements.

Manufacturing Quality and Consistency

SIP performance starts in the factory.

Differences in manufacturing processes, quality control systems, and material handling can affect:

• panel dimensional accuracy
• bond strength
• long-term durability

Consistent production is critical, especially for projects with tight tolerances or complex geometries.

Installation Considerations

Even the best panel system can underperform if installation is not aligned with the design.

Evaluate:

• panel layout and sequencing
• connection details
• sealing methods
• field documentation and guidance

Manufacturers that provide clear installation documentation and support help reduce errors, delays, and performance issues.

Project-Specific Requirements

Every project is different. The right SIP manufacturer should align with:

• climate zone
• building type
• structural requirements
• construction schedule
• installation experience of the team

There is no single “best” manufacturer. The right choice is the one that fits the system requirements of your specific project.

PGS Consulting frequently works with SIP manufacturers, builders, and design teams to evaluate building system performance, manufacturing processes, and installation practices.

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Frequently Asked Questions About SIP Manufacturers

1. How many SIP manufacturers are there in North America?

There are roughly 40–45 active SIP manufacturers across the U.S., Canada, and Mexico, depending on how you classify MgO‑faced and hybrid panel producers. Our list includes only true manufacturers, not resellers or installers, so readers get an accurate picture of the actual production landscape.

2. Why do some companies claim to make SIPs but aren’t on this list?

Many companies in the SIP space are installers, kit providers, or resellers, not manufacturers. They may market “SIP packages,” but the panels themselves are produced by a third‑party manufacturer. This list includes only companies that physically manufacture SIPs.

3. What’s the difference between EPS, GPS, and PUR/PIR SIP manufacturers?

Each manufacturer specializes in one or more core types:

• EPS — Most common, cost‑effective, widely code‑recognized

• GPS — Higher R‑value per inch, used by a smaller group of manufacturers

• PUR/PIR — Higher performance, tighter tolerances, fewer manufacturers

• MgO‑faced SIPs — A growing category with unique fire and moisture characteristics

Your choice of manufacturer often depends on performance goals, code requirements, and project complexity.

4. Are all SIP manufacturers members of SIPA?

No. SIPA membership is voluntary. Many reputable manufacturers are SIPA members, but several long‑standing producers are not. SIPA membership is a helpful indicator of industry engagement, but not a requirement for quality or code compliance.

5. How do I choose the right SIP manufacturer for my project?

Start with three filters:

1. Core type — EPS, GPS, PUR/PIR, or MgO

2. Code report — ICC‑ES, CCMC, or third‑party engineering

3. Project needs — spans, loads, climate zone, installation workflow

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Evaluating SIP Manufacturers for Your Next Project

If you are comparing SIP manufacturers or trying to understand how different systems will perform in your project, PGS Consulting can help.

Joe Pasma, PE brings more than 40 years of experience across SIP engineering, manufacturing, installation, and forensic investigation.

Contact Joe Pasma →

About the Author

Joe Pasma, PE is a licensed professional engineer with more than 40 years of experience working with Structural Insulated Panels and advanced building systems. His background includes structural engineering, manufacturing operations, installation oversight, and forensic investigation.

Through PGS Consulting LLC, Joe works with manufacturers, builders, architects, and project teams to improve technical systems, reduce risk, and strengthen building performance.

Learn more about Joe Pasma →

How to Measure Consulting ROI and Why Systems-Based Consulting Works Better

Return on investment in technical consulting often comes from improving systems, documentation, and processes. PGS Consulting applies this systems approach across engineering, manufacturing, and Structural Insulated Panel consulting projects.

Consulting services often struggle with a reputation problem when companies cannot clearly see the return on investment from a consulting engagement.

Not because consultants lack expertise, but because too many engagements leave companies wondering what they actually received for their investment. The advice may have sounded valuable. The meetings may have been productive. But when the work is finished, a reasonable question remains.

What actually changed?

If you have ever hesitated to hire a consultant because the fees felt high or the expected return felt unclear, you are not alone. Companies should expect clarity, measurable value, and a clear path to improvement before committing to outside expertise.

At PGS Consulting LLC, our approach was built around solving this exact issue. The goal is simple. When a consulting engagement ends, the client should clearly understand what was delivered, how it improves their operations, and how it reduces future risk.

What Is Consulting ROI?

Consulting ROI refers to the measurable value an organization receives from a consulting engagement.

That value often appears in several ways:

• reduced operational risk
• improved technical systems
• fewer installation or manufacturing errors
• faster decision making
• stronger documentation and workflows
• fewer project failures or warranty claims

In technical industries such as manufacturing and construction, consulting ROI often comes from risk reduction and better systems, not just short-term cost savings.

When systems improve, organizations operate more efficiently and avoid expensive mistakes.

Why Consulting ROI Often Feels Unclear

Most companies do not struggle with the idea of paying for expertise. They struggle with uncertainty about what they will actually receive.

Here are 5 common patterns that tend to make consulting ROI difficult to see.

1. Deliverables Are Not Clearly Defined

   Many consulting engagements are framed around ideas such as strategic guidance or expert insight.

   Those ideas may be valuable, but they are not always delivered as tools that teams can implement. Without clear deliverables, the outcome can feel intangible.

2. The Problem Was Never Clearly Defined

   If the original problem is vague, the value of solving it becomes vague as well.

   Organizations may spend time exploring issues instead of resolving them.

3. Advice Is Given Without Systems

   A recommendation alone rarely changes an organization.

   For advice to create measurable value, it must be translated into documentation, workflows, and repeatable processes that teams can follow.

4. Execution Is Left to the Client

   In many consulting engagements, the work stops at the presentation stage.

   Internal teams are expected to turn high-level recommendations into operational improvements without clear implementation guidance.

5. There Is No Baseline

   If the starting point is never documented, improvement becomes difficult to measure.

   And if improvement cannot be measured, consulting ROI remains uncertain.

   None of these problems come from bad intentions. They simply reflect how consulting has traditionally been structured.

The PGS Philosophy: Clarity Comes Before Decisions

PGS Consulting was built to solve the consulting ROI problem at its root.

The work begins with a simple belief. You cannot measure value until you understand the system, and you cannot improve a system until you can see it clearly.

That is why every engagement begins with clarity first. Whether the work involves engineering analysis, manufacturing optimization, quality control systems, documentation development, or forensic repair analysis, the first step is always understanding the system.

That means answering a few critical questions:

• What problem are we solving?
• What decisions are currently blocked?
• What risks exist within the system?
• What systems are missing or incomplete?
• What documentation does the team need to execute with confidence?

Once those questions are answered, the path forward becomes much clearer.

This clarity-first approach ensures that every deliverable, recommendation, and phase of work ties directly to a defined outcome.

As outlined on the Services and Pricing page, consulting work is structured into phases with defined deliverables, defined outcomes, and fixed fees.

How This Approach Applies Across All PGS Service Areas

PGS Consulting applies the same systems-first approach across every service area. These services include:

• Engineering and Technical Compliance Systems
• Manufacturing and Operational Optimization
• Installation Support and Commissioning Oversight
• Product Selection and System Design Alignment
• Forensic Repair and Remediation Planning
• Expert Witness Services

Each service follows the same structured consulting model with clearly defined scope, predictable deliverables, and measurable outcomes.

This consistency helps organizations understand exactly what they will receive and how the work will improve their operations.

A Note on Forensic Repair Analysis

This is one of the clearest examples of measurable ROI.

When a building failure occurs, the cost of uncertainty is enormous.

PGS provides:

• root-cause clarity

• field-ready diagrams

• repair pathways

• documentation for contractors and engineers

• risk reduction for owners and insurers

This pricing model — also outlined on our Services & Pricing page — ensures fairness, transparency, and alignment with the complexity of the work.

Why Engineering and Manufacturing Problems Require a Systems Approach

In engineering and manufacturing environments, most problems are not isolated events.

They are symptoms of system issues.

That system might include:

• engineering assumptions
• installation practices
• manufacturing processes
• documentation gaps
• unclear quality control procedures

When consulting focuses only on the immediate problem, the underlying system often remains unchanged.

At PGS Consulting, the focus is on understanding the entire system first. Once the system becomes visible, the solution usually becomes much clearer.

Need a Second Set of Eyes on a Technical Problem?

Many manufacturers, builders, and project teams contact PGS Consulting when they need clarity on a technical challenge, manufacturing process, installation issue, or building performance concern.

Joe Pasma, PE brings more than four decades of experience working with Structural Insulated Panels and advanced building systems across engineering, manufacturing, installation, and forensic investigation.

If you would like to discuss a challenge your team is facing, you can contact Joe directly →

How a Systems Approach Makes Consulting ROI Visible

The goal of a consulting engagement should not be abstract advice. It should produce tools and systems organizations can use immediately.

Deliverables That Teams Can Own

PGS consulting engagements typically produce operational assets such as:

• standard operating procedures
• work instructions
• fillable form records
• engineering documentation
• quality control workflows
• field-ready diagrams
• troubleshooting frameworks
• system maps and decision trees

These tools help organizations implement improvements immediately and maintain them long after the engagement ends.

Clear Before and After Conditions

Every system has a current state and a future state.

Documenting both makes it possible to see exactly what changed and why those changes matter.

Risk Reduction

For manufacturers and builders, risk reduction is often the largest source of consulting ROI.

Improved systems can lead to:

• fewer field failures
• fewer warranty claims
• fewer installation errors
• fewer compliance surprises
• fewer engineering redesigns

Reducing risk improves both operational stability and financial performance.

Faster Decision Making

Clarity removes bottlenecks.

When teams understand the system and have clear documentation, decisions happen faster and projects move forward with fewer delays.

Why PGS Consulting Fees Are Structured the Way They Are

Consulting projects often feel unpredictable because the scope of work is unclear from the start. PGS Consulting addresses this by structuring engagements into defined phases. Each phase includes a clear scope of work, specific deliverables, and a fixed fee so clients understand exactly what they are buying before work begins.

Each phase includes:

• a clearly defined scope
• specific deliverables
• a fixed fee
• a 40% non-refundable deposit

There are no hidden costs. Travel expenses are handled separately, and implementation work remains with the client's internal team. PGS Consulting focuses on the advisory and systems design roles.

This structure keeps projects transparent and predictable while aligning consulting work with outcomes rather than hours.

It also protects both sides of the engagement. Clients know exactly what they are purchasing, and PGS Consulting can deliver defined results without scope creep. Work moves at the client’s pace, and value is tied to outcomes rather than time spent.

Advisory Boundaries That Protect ROI

PGS Consulting stays firmly in the advisory and systems design lane. The goal is to provide the clarity, documentation, and workflows that allow your team to execute confidently.

This includes developing system maps, engineering documentation, quality control workflows, and decision frameworks that support better operations.

Execution remains within the client's organization. That separation is intentional and important.

When advisory work and operational work remain clearly defined, consulting ROI becomes much easier to measure.

A Practical Framework for Evaluating Any Consultant

Whether you work with PGS Consulting or another advisor, there are several useful questions to ask before committing to an engagement.

• What problem will this engagement solve? → ROI requires a defined target.

• What deliverables will our organization receive? → Prevents “vague advice” engagements.

• How will this reduce risk or cost? → Makes ROI tangible.

• What decisions will become easier or faster? → Time savings = real money.

• What new capabilities will our team gain? → Measures capability-building.

• How will success be measured? → Creates accountability.

If these questions cannot be answered clearly, the value of the engagement will remain difficult to evaluate.

Organizations that understand how to measure consulting ROI are far more likely to choose consulting partners that deliver lasting operational improvements rather than temporary advice.

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Frequently Asked Questions About Consulting ROI

Why does consulting sometimes feel expensive?

Consulting can feel expensive when the scope and deliverables are unclear. When projects include clearly defined outcomes and operational tools, the value becomes easier to measure.

How can consulting ROI be measured?

Consulting ROI often manifests as reduced risk, improved systems, fewer operational errors, faster decision-making, and stronger documentation that supports long-term performance.

What makes a consulting engagement successful?

Successful consulting engagements focus on clearly defined problems, measurable outcomes, and deliverables that organizations can implement and maintain after the project is completed.

Why does PGS structure consulting work in phases?

Phase based consulting allows clients to understand the scope, deliverables, and cost of each stage before moving forward. This provides transparency and allows organizations to progress at their own pace.

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Have Questions About Technical Consulting?

If you are evaluating consulting support and want clarity before committing to an engagement, Joe Pasma, PE is always glad to help.

With more than 40 years of experience across engineering, manufacturing systems, installation oversight, and forensic investigation, Joe works with organizations to clarify technical problems and strengthen operational systems.

Contact Joe Pasma to discuss your project or technical challenge →

About the Author

Joe Pasma, PE is a licensed professional engineer with more than 40 years of experience working with Structural Insulated Panels and advanced building systems. His background includes structural engineering, manufacturing operations, installation oversight, and forensic investigation.

Through PGS Consulting LLC, Joe works with manufacturers, builders, architects, and project teams to improve technical systems, reduce risk, and strengthen building performance.

Learn more about Joe Pasma →

Can Structural Insulated Panels (SIPs) Be Used in Moist or Cold Climates?

Editor’s Note: This article is adapted from an “Ask the Expert” column originally written by Joe Pasma and published in Facility Magazine in 2013. The content has been updated to reflect current building practices and industry context.

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Structural Insulated Panel (SIP) building under construction, showing panelized wall assembly during installation.

One of the most common questions people ask about Structural Insulated Panels is whether they can be used in wet, humid, or cold climates.

The real question behind that concern is much simpler: Can you safely build with wood in these climates?

The answer has always been yes.

Wood-framed buildings exist everywhere from the Louisiana Gulf Coast to communities above the Arctic Circle in Alaska. Structural Insulated Panels use the same fundamental materials, but combine them into a high-performance panelized building system.

When properly designed and installed, SIPs perform extremely well in demanding climates.

SIP Construction in Challenging Climates

Across North America, there are many examples of successful SIP buildings located in cold, wet, and humid environments.

Examples include:

• George Morgan High School in Kalskag, Alaska, where the region receives heavy snowfall and regularly experiences sub-zero temperatures
• Cody Cattle Company restaurant in northern Wyoming near Yellowstone National Park
• Little Big Horn College Health and Wellness Center on the plains of Montana
• Finn Hill Junior High School in Kirkland, Washington, an area that receives nearly 40 inches of rain annually
• Portland Community College Newberg Center in Oregon, recognized as an AIA Committee on the Environment Top Ten Green Project

These projects demonstrate that SIP construction can perform reliably in climates where moisture control and durability are critical.

Why People Question SIPs in Moist Climates

The concern usually centers around the oriented strand board (OSB) skins used in SIP panels.

Because OSB is a wood-based material, some assume it may be vulnerable to moisture.

In reality, SIP panels are manufactured using OSB with an Exposure 1 rating under APA standards. This rating means the adhesive bonds are designed to withstand temporary exposure to moisture during construction before the building is fully enclosed.

This is the same type of rating used in many conventional wood framing materials.

Like any building system, the long-term durability of SIPs depends on proper building envelope design and installation practices.

Moisture Management Still Matters

Whether a building is framed with studs or panels, controlling water and air movement is essential.

The International Building Code requires several components that protect the building envelope from moisture intrusion:

• Proper flashing at windows, doors, and penetrations
• A weather-resistant barrier to protect the wall assembly
• Drainage pathways that allow water to exit the wall system

These practices apply equally to SIP construction.

For SIP walls, builders typically use synthetic weather barriers or building wraps as the weather-resistant barrier.

For roof assemblies, breathable roofing underlayments often replace traditional felt paper. These materials allow water vapor to escape while keeping bulk water out, similar to how a high-quality rain jacket works.

This can be particularly beneficial if SIP roof panels experience temporary exposure during construction.

Read more about the relationship between air control, moisture management, and building envelope performance in an article published in The Construction Specifier.

Air Sealing Is a Major Advantage of SIPs

One reason SIPs perform so well in demanding climates is their airtight construction.

The panels contain continuous insulation and fewer joints than conventional framing systems. When the panel joints are properly sealed with mastics and tapes, the building envelope becomes extremely tight.

This helps prevent warm, humid air from entering wall and roof cavities where condensation can occur.

In many climates, building codes may also require a vapor retarder depending on the wall assembly and local conditions. Builders should always confirm requirements with the local building official and SIP manufacturer.

A Quick Word for Builders Evaluating SIP Construction

SIPs are sometimes viewed as a futuristic or unfamiliar technology. In reality, the system has been studied extensively and used successfully for decades.

The primary reasons builders choose SIPs typically come down to two practical benefits:

Energy efficiency and construction speed.

Because SIPs provide continuous insulation and exceptional airtightness, they can significantly reduce heating and cooling energy use. Studies from the U.S. Department of Energy have shown SIP buildings can dramatically outperform conventional framing in air leakage and thermal performance.

SIPs also streamline construction. Panels arrive pre-cut and labeled, allowing crews to assemble walls and roofs much faster than traditional framing.

This can be especially valuable in an industry facing ongoing labor shortages.

Have questions about using SIPs on a project?

If you have questions about SIP construction or panelized building systems, feel free to reach out. Joe is always glad to help teams think through the technical considerations that affect project performance.

The Bottom Line

Structural Insulated Panels can perform very well in wet, cold, or humid climates when the building envelope is properly designed and installed.

The same principles that protect conventional wood framing also apply to SIP construction. Proper flashing, weather barriers, drainage, and air sealing ensure the building remains durable and efficient over the long term.

When these practices are followed, SIPs offer a strong combination of durability, energy efficiency, and construction speed that continues to attract builders, architects, and facility owners across North America.

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Frequently Asked Questions About SIPs in Moist Climates

Can Structural Insulated Panels be used in humid climates?

Yes. SIP buildings perform well in humid climates when the building envelope is properly designed and installed. Proper flashing, weather barriers, and sealed panel joints prevent moisture intrusion and air leakage.

Do SIP panels absorb water?

SIP panels use oriented strand board (OSB) skins that are manufactured with an Exposure 1 rating under APA standards. This rating allows for temporary exposure to moisture during construction before the building is fully enclosed.

Like any wood-based building material, long-term durability depends on proper moisture management in the building envelope.

Are SIP roofs suitable for rainy climates?

Yes. SIP roof systems are commonly used in regions with heavy rainfall or snow. Breathable roofing underlayments help protect the roof assembly while allowing water vapor to escape.

Are SIP buildings more airtight than traditional framing?

Yes. SIP panels have continuous insulation and fewer joints than conventional framing systems. When the panel joints are properly sealed, SIP structures can achieve very high levels of airtightness, which improves energy efficiency and building durability.

Do SIP buildings work in cold climates?

SIPs are widely used in cold climates because they provide excellent insulation and airtightness. Many buildings in northern regions of North America use SIP construction to reduce heating energy consumption and improve indoor comfort.

Have Questions About SIP Construction?

If you are exploring Structural Insulated Panels or evaluating panelized construction for a project, Joe Pasma, PE is always glad to help. With more than 40 years of experience across engineering, manufacturing, installation, and forensic investigation, Joe provides practical guidance to help project teams avoid costly mistakes and build better-performing structures.

Contact Joe Pasma to discuss your project →

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About the Author

Joe Pasma, PE, is a licensed professional engineer with more than 40 years of experience working with Structural Insulated Panels and advanced building systems. His background spans structural engineering, manufacturing systems, installation oversight, and forensic investigation.

Through PGS Consulting LLC, Joe advises manufacturers, builders, architects, and project teams on the technical and operational challenges associated with high-performance building systems.

Learn more about Joe Pasma →

Why Structural Insulated Panels (SIPs) Create Faster, More Energy Efficient Building Envelopes

Editor’s Note: This article is adapted from an article originally written by Joe Pasma, PE, and published in Green Homebuilder in 2015. The content has been updated to reflect current building practices and industry context.

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For most residential construction in the United States, stick framing has long been the standard approach. Builders understand it, materials are widely available, and the process is familiar across the industry.

At the same time, the expectations placed on buildings today have changed. Energy codes are stricter, labor shortages are affecting job sites, and builders are under increasing pressure to deliver homes that perform better and waste less energy.

Because of these changes, more builders are exploring advanced building envelope systems such as Structural Insulated Panels, commonly known as SIPs.

SIPs combine structure and insulation into a single panel system. When designed and installed correctly, they simplify the building envelope while improving performance and construction efficiency.

Builders often discover that SIPs solve several problems at the same time. They help create tighter buildings, improve insulation performance, and speed up the framing stage of construction.

Key Takeaways: Why Builders Use SIP Building Envelopes

• SIPs create tighter building envelopes because they reduce the number of joints where air leakage can occur.

• Continuous insulation across the panel reduces thermal bridging that occurs with traditional framing.

• Factory-manufactured panels allow builders to install walls and roofs significantly faster.

• Pre-cut openings and integrated electrical chases simplify construction.

• Reduced framing labor helps address the skilled labor shortages affecting the construction industry.

• Improved airtightness and insulation can reduce heating and cooling demand.

Why Airtightness Matters in Building Performance

One of the biggest advantages of SIP construction is airtightness.

Energy codes across the United States continue to place greater emphasis on controlling air leakage. Air that moves uncontrolled through a building envelope carries heat, moisture, and energy costs with it.

For example, California’s Title 24 Building Energy Efficiency Standards require that joints, penetrations, and openings in the building envelope be sealed to limit infiltration and exfiltration.

Similarly, the International Energy Conservation Code (IECC) requires blower door testing to verify air tightness in residential construction.

Meeting these air leakage targets with traditional framing is possible, but it requires careful detailing and significant attention during construction.

SIP construction simplifies the process.

Because SIP walls consist of continuous insulation sandwiched between structural facings, there are fewer joints and fewer pathways for air to move through the wall assembly. When the panels are sealed properly during installation, the building envelope becomes much easier to tighten.

Research from Oak Ridge National Laboratory

Research from the U.S. Department of Energy’s Oak Ridge National Laboratory (ORNL) has demonstrated how airtight SIP construction can be.

Testing conducted by ORNL found that SIP structures can be significantly more airtight than traditionally framed walls insulated with fiberglass batts.

In one evaluation, a SIP structure showed an air leakage rate of only eight cubic feet per minute at 50 Pascals of pressure. A comparable stick-framed wall showed a leakage rate of 121 cubic feet per minute.

Research like this highlights one of the key benefits of SIP construction. Fewer joints and simpler wall assemblies make it easier to create a tight building envelope.

For homeowners, that typically means lower heating and cooling demands and a more comfortable indoor environment.

Whole Wall Performance Matters

Another important difference between SIP construction and traditional framing involves how insulation performance is measured.

Many discussions about insulation focus on the R value of the insulation material itself. In reality, what matters most is the performance of the entire wall assembly.

Traditional framing introduces thermal bridges through studs, plates, and headers. Heat moves through those structural members much more easily than it moves through insulation.

SIPs reduce this problem because the insulation layer is continuous across the panel.

Testing performed by Oak Ridge National Laboratory found that SIP wall assemblies can outperform comparable stick-framed walls when evaluated as a complete system.

Because there are fewer framing interruptions, the insulation performs closer to its intended value across the entire wall.

For builders and homeowners, that means a building envelope that holds conditioned air more effectively and reduces heating and cooling demand.

Thinking about using SIPs on a project?

If you are evaluating Structural Insulated Panels or exploring panelized construction, Joe is always happy to talk through the technical considerations and help teams understand their options.

Why SIP Construction Speeds Up the Framing Process

In addition to energy performance, SIP construction can significantly reduce framing time.

Panels are manufactured off-site and delivered to the jobsite pre-cut according to the project plans. Window and door openings are typically cut during manufacturing, and electrical chases are often built into the panels.

Instead of assembling walls one stud at a time, crews install large structural panels that can span several feet in both directions.

Entire wall and roof sections can often be installed in hours rather than days.

Builders often describe the process as assembling a structure like a puzzle. Each panel is labeled and corresponds to a specific location in the building.

This approach reduces on-site cutting, limits jobsite waste, and helps construction crews move through the framing stage more efficiently.

Addressing the Skilled Labor Shortage

Labor shortages continue to affect construction projects across the United States.

The National Association of Home Builders has reported that builders consistently rank the shortage of skilled labor as one of the biggest challenges facing the industry.

Traditional framing requires crews to measure, cut, and assemble large quantities of lumber on site.

SIP construction reduces much of that complexity.

Because the panels arrive ready for installation, crews spend less time performing repetitive framing tasks. Openings are already cut, and the structural and insulation components are combined into a single system.

This does not eliminate the need for skilled tradespeople, but it can significantly reduce the amount of labor required to complete the framing stage of a project.

For many builders, this efficiency is becoming just as important as the energy performance advantages.

What Builders Should Know About Cost

Builders often ask whether SIP construction costs more than traditional framing.

The answer depends on how the project is evaluated.

Panel materials may cost more than the lumber used in stick framing. However, when labor savings, shorter construction timelines, and reduced jobsite waste are considered, the overall project cost is often comparable.

A tighter building envelope can also enable smaller heating and cooling systems, potentially reducing mechanical equipment costs.

Over the life of the building, improved insulation and airtightness can also reduce energy expenses for homeowners.

For many projects, the conversation shifts from the cost of materials to the value of the complete building system.

A Systems Approach to Building Performance

One of the most important lessons from working with SIP systems over many years is that building performance rarely depends on a single component.

Performance depends on how the entire system works together.

When SIP panels are properly designed, manufactured, and installed, they offer a straightforward way to build strong, energy-efficient building envelopes with fewer complications during construction.

That combination of simplicity and performance is one reason many builders continue to explore SIP systems as a practical alternative to conventional framing methods.

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Frequently Asked Questions About SIP Building Envelopes

Are SIP buildings more airtight than stick-framed homes?

Yes. Research from the U.S. Department of Energy’s Oak Ridge National Laboratory has shown that SIP structures can be significantly more airtight than traditionally framed walls because there are fewer joints and gaps where air can leak through the building envelope.

Do SIPs install faster than traditional framing?

In many projects, they do. SIP panels are manufactured off-site and delivered to the jobsite pre-cut according to the construction drawings. Large structural panels allow crews to assemble walls and roofs much faster than building them piece by piece with traditional framing.

Do SIPs cost more than stick framing?

Panel materials may cost more than traditional lumber, but overall project costs are often similar when labor savings, shorter construction schedules, and reduced waste are considered.

Why do builders choose SIP construction?

Builders often choose SIPs because they provide a strong, well-insulated building envelope that installs quickly and performs well under modern energy code requirements.

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Discussing a SIP Project

If you are exploring Structural Insulated Panels or evaluating panelized construction for a project, feel free to reach out. I’m always glad to help teams think through the engineering, manufacturing, and installation considerations that can affect project performance.

Contact Joe Pasma, PE →

About the Author

Joe Pasma, PE is a structural engineer with more than 40 years of experience working with Structural Insulated Panels, advanced building systems, manufacturing processes, and forensic investigations. Through PGS Consulting LLC, he provides advisory support to manufacturers, builders, architects, and project teams navigating complex building system decisions.

Learn more about Joe Pasma →