TUBULAR STEEL BUILDING INSULATION SYSTEM

for VersaTube and Similar Buildings

Custom roof-and-wall insulation systems designed for tube-frame garages, workshops, barns, and storage buildings - with options for new construction and interior retrofit.

Send us your building dimensions, location, intended use, and project photos. A CMI insulation specialist will help identify the right material, facing, and installation approach.

Request a Free Quote

Banner Form

"*" indicates required fields

We’ll respond within 1 business day. No spam. No pressure.

WHY TUBULAR BUILDINGS NEED THE RIGHT SYSTEM

BENEFITS OF TUBULAR STEEL BUILDING INSULATION

CONTROLS HEAT TRANSFER

Fiberglass insulation slows heat movement through the metal roof and walls, helping the building stay cooler in summer and warmer in winter.

HELPS MANAGE CONDENSATION

A properly designed and sealed insulation system helps keep warm, moist air from reaching cold metal surfaces where condensation can form.

IMPROVES YEAR-ROUND COMFORT

More consistent indoor temperatures make garages, workshops, storage buildings, and other tubular structures more comfortable and usable.

CREATES A CLEANER, QUIETER INTERIOR

White-faced insulation provides a brighter finished appearance while helping reduce noise from rain, wind, traffic, and exterior activity.

TUBULAR STEEL BUILDING INSULATION: MYTHS VS. REALITY

WHAT YOU SHOULD KNOW BEFORE INSULATING A TUBULAR STEEL BUILDING

There’s plenty of conflicting advice about insulating tubular steel buildings. In this video, we address common misconceptions and explain the practical realities building owners and contractors should understand before choosing an insulation approach.

Watch:

R-19 Heavy Duty Reinforced w/Batt (Per S.F.) – $.95 per sq ft

R-19 Heavy Duty Reinforced w/Batt (Rolls) – $190 ea (200 S.F. roll)

TUBULAR STEEL FRAMING CHANGES THE INSULATION PLAN

Tubular steel buildings have closely spaced framing, shallow cavities, braces, transitions, and openings that can vary throughout the structure. The insulation system should be planned around the building’s actual dimensions—not assumed standard metal-building spacing.

The layout must account for:

Roof and wall bay measurements
Tube depth and framing spacing
Roof pitch and wall height
Braces, eaves, gables, and corners
Doors, windows, and penetrations
Base channels and panel transitions

A properly planned system helps:

Match roll widths to the actual framing
Prevent excessive fiberglass compression
Identify air paths before they are concealed
Create a continuous interior-facing surface
Keep seams, edges, and penetrations consistently sealed

COMPARE YOUR INSULATION OPTIONS

WHICH INSULATION SYSTEM IS RIGHT FOR YOUR
TUBULAR STEEL BUILDING?

✓ Faced Fiberglass Insulation Rolls + Reinforced Liner

CMI's Specialty

Best For Garages, workshops, storage buildings, barns, and other spaces needing thermal performance plus a clean interior finish.

Advantages Broad R-value options, a bright finished appearance, and the ability to create a continuous vapor-control layer. Custom sizing can also reduce field cutting.

Considerations Requires accurate measurements, compatible attachment methods, sealed seams, and enough framing depth to avoid excessive fiberglass compression.

• Closed-Cell Spray Foam

Best For Projects prioritizing direct adhesion and air sealing around irregular details.

Advantages Adheres directly to metal, adds air sealing, and can be useful around difficult gaps and transitions.

Considerations Typically has a higher installed cost and remains exposed unless covered. Application quality matters, and the foam can complicate future access to or replacement of metal panels.

• Reflective or Radiant System

Best For Hot-climate or lightly conditioned buildings where reducing radiant heat gain is the primary goal.

Advantages A thin, lightweight system that can help reduce radiant heat transfer when installed with the required adjacent air space.

Considerations It is not a substitute for full thermal insulation in many conditioned or cold-climate applications. Performance depends on the assembly design and maintaining the required air space.

Not sure which system fits your building? Send CMI the dimensions, location, intended use, and photos for a project-specific recommendation.

HOW THE CMI SYSTEM WORKS

FIVE COMPONENTS THAT WORK TOGETHER AS ONE
INSULATION SYSTEM

A successful tubular steel building insulation system depends on more than fiberglass alone. Each component works together to improve thermal performance, support vapor control, and create a cleaner finished interior.

FIBERGLASS THERMAL LAYER

Fiberglass provides the system’s primary resistance to heat flow through the building’s metal roof and wall panels.

REINFORCED INTERIOR FACING

The durable facing protects the fiberglass, supports vapor control, and creates the bright finished surface visible inside the building.

SEALED SEAMS AND OVERLAPS

Adjacent sections are joined and sealed to help maintain continuity and limit uncontrolled air movement through gaps in the system.

PERIMETER AND OPENING DETAILS

The system is carefully finished around bases, eaves, gables, corners, windows, doors, braces, and utility penetrations.

SECURE FASTENING

Compatible fastening methods hold the facing in place while helping reduce sagging, unnecessary punctures, and exposed raw insulation.

PLAN FOR THE BUILDING YOU HAVE

NEW CONSTRUCTION VS. RETROFIT INSULATION
FOR TUBULAR STEEL BUILDINGS

Existing tube-frame buildings can often be insulated successfully from the inside. The key is to document the current structure and correct air-leakage, condensation, and attachment issues before they are hidden behind the new interior facing.

1 New Construction

1/3

Recommended Approach Coordinate the insulation thickness, roll dimensions, facing, attachment method, and installation sequence before the building shell is fully enclosed.

Key Planning Points New construction provides greater flexibility at roof and wall transitions, easier access around framing, and more opportunity to reduce field cutting, installation time, and concealed gaps.

2 Existing Building Retrofit

1/3

Recommended Approach Inspect and seal existing gaps from the interior, confirm utilities and attachment points, then install the insulation and finished liner across the roof and walls.

Key Planning Points Existing condensation, leakage, and air paths should be addressed first. Braces, windows, doors, electrical work, and base conditions may require project-specific detailing.

FROM PLANNING TO FINISHED INTERIOR

HOW TUBULAR STEEL BUILDING INSULATION IS PLANNED AND INSTALLED

Every tubular steel building has different framing dimensions, braces, openings, and transitions. CMI plans the insulation system around the actual structure so each component can be fitted, secured, and sealed correctly.

STEP 1: CONFIRM THE BUILDING USE

Identify whether the space will be heated, cooled, occupied regularly, used as a workshop, or used primarily for seasonal storage.

STEP 2: MEASURE THE STRUCTURE

Record the building dimensions, framing spacing, tube depth, roof pitch, braces, doors, windows, and utility penetrations.

STEP 3: PREPARE AND AIR-SEAL THE SHELL

Address uncontrolled gaps at bases, eaves, gables, corners, panel joints, and framing transitions before installing the insulation system.

STEP 4: FIT THE INSULATION

Select and position insulation that fits the available framing zone without damaging or excessively compressing the fiberglass.

STEP 5: INSTALL THE FACED FIBERGLASS

Run the faced insulation across the planned roof and wall areas and secure it using the selected attachment system.

STEP 6: FINISH SEAMS AND TRANSITIONS

Seal overlaps, corners, windows, doors, penetrations, and base terminations to complete the continuous interior system.

Applications and Ideal Projects

Built for Metal Roof Sheeting Projects Where Material Movement Slows the Crew Down

SkyRail is especially relevant when the roof project involves long panels, wide-span layouts, repeated staging, and crews that need material close to the installation area.

Pre-engineered metal buildings
Steel warehouses and industrial buildings
Agricultural and equipment storage buildings
Commercial standing seam metal roofs
Wide-span roof sheeting projects
Low-slope metal roof projects where manual material movement creates delays
Large roof repairs or reroofing projects where sheet staging is a bottleneck

INSULATION

R-VALUES AND PRICES

MATCH PERFORMANCE TO YOUR BUILDING

CHOOSE THE RIGHT R-VALUE, THICKNESS AND FACING

The right fiberglass insulation roll is determined by more than the highest available R-value. Climate, building use, heating and cooling plans, roof and wall coverage, local requirements, and the available framing depth all affect which system will perform correctly.

For tubular steel buildings, insulation thickness must also fit the available frame zone without excessive compression. CMI can help match the fiberglass, facing, roll dimensions, and attachment approach to the actual building.s.

SEE THE DIFFERENCE PROPER INSULATION MAKES

FROM BARE METAL SHELL TO A BRIGHTER FINISHED INTERIOR

After: Tubular Steel Building Insulation

Preparing and Sealing the Building Shell

High Conversion Element

Cost Calculator

Estimate How Much Pole Barn Insulation You Need

Use these quick formulas to estimate the insulation area for your pole barn. For a job-ready quote, send us your building dimensions and we’ll help you determine the right material and layout.

Roof

(Width + 2') x Frame Length x Price per Sq. Ft.

Add 2 feet to the width to cover the gables on a sloped roof, which increases the surface area compared to a flat roof.

Sides

Height x Frame Length x 2 (for both sides) x Price per Sq. Ft.

Multiply by 2 to account for insulating both sides of the building, ensuring full coverage and consistent protection.

END

(Height + 2') x Width x 2 (for both ends) x Price per Sq. Ft.

Add 2 feet to the height for extra coverage on the ends. Multiply by 2 because there are two ends to insulate.

WHY BUILDERS AND OWNERS CHOOSE CMI

WHY CMI IS THE RIGHT PARTNER FOR YOUR TUBULAR STEEL BUILDING

CMI helps building owners, contractors, and installers choose an insulation system that fits the actual structure - not a generic diagram. Whether the project is a VersaTube garage, workshop, barn, equipment building, or storage structure, CMI can help align the material and installation plan with the building use, climate, performance goals, and budget.

Custom insulation sized to the actual tubular steel building dimensions
Options for new construction and interior retrofit projects
Reinforced facings designed for moisture control, durability, and a clean finished appearance
Less job-site cutting through project-specific roll sizing
Color-coded and organized materials for a more efficient installation
Support selecting the insulation, facing, thickness, and attachment approach
Real project experience with tube-frame structures
Nationwide material supply and support from an insulation specialist
Formaldehyde-free fiberglass, improved vapor-barrier facing options, no-staple facing tabs, and COMcheck support where applicable and verified by CMI

Manufactured to your exact building dimensions

Reinforced facings designed for metal structures

Stable R-value performance over time

Bulk and volume pricing

Skyrail has been working really great! It’s making my guys lazy! The new guys will never know what it’s like to pack sheets hundreds of feet to the other side of a roof.

Very happy with my purchase here. I was lost as far as how to insulate my metal building. I almost pulled the trigger on just doing foam boards you buy Home Depot, but found this company through a colleague. The price for their insulation was about the same as it would have been for the foam boards but the R-value was better and it was all custom cut for my building. Installing the batts was a learning process especially for the roof. You can certainly do it as a one-man-band but it’s going to take some time and little tricks to make it work. The insulation is very high quality, and I can absolute tell a difference inside my shop! Thanks guys! I’ll be sending people you’re way!

I purchased insulation for my Barndominium in Malad ID, about 6 years ago and they provided me with a fantastic product that was made exactly to my specs. Swenson really took care of me. It is a bit of a drive but I was down there again last week #CustomerForLife.

Great distributor of foam pro. Landon is great

FREQUENTLY ASKED QUESTIONS

Can you insulate a VersaTube building?

Yes. VersaTube buildings and other tubular-frame metal structures can be insulated using systems designed around the roof framing, wall framing, braces, doors, windows, and other building details. CMI can help determine the right fiberglass insulation rolls, facing, and installation approach for the structure.

What is the best insulation for a tubular steel building?

The best insulation depends on how the building will be used, the local climate, the desired R-value, the framing depth, and whether the building is new or already constructed. Fiberglass blanket systems are often a practical choice because they can provide thermal performance, condensation control, and a clean finished interior when properly designed and installed.

Is fiberglass, spray foam, or reflective insulation better for a tube-frame garage?

Each option has advantages. Fiberglass can provide higher thermal performance and a finished interior facing, spray foam can help seal irregular spaces, and reflective insulation may help reduce radiant heat but usually provides less overall thermal resistance on its own. The best option depends on the garage’s use, budget, climate, and framing configuration.

Can an existing tubular metal building be insulated from the inside?

Yes. Many existing tubular metal buildings can be retrofitted from the interior. The installation plan must account for framing members, cross-bracing, electrical components, windows, doors, roof-to-wall transitions, and other obstructions so the insulation can remain continuous and properly sealed.

Should I insulate the roof, walls, or both?

For the best overall temperature and condensation control, insulating both the roof and walls is generally recommended. Insulating only the roof may reduce heat transfer through the largest exposed surface, but uninsulated walls can still allow significant heat gain, heat loss, and moisture problems.

Will insulation stop condensation in a metal building?

Insulation can significantly reduce condensation risk when it is installed as part of a properly designed system. Effective condensation control also depends on continuous vapor-retarder coverage, sealed seams and penetrations, ventilation, indoor humidity, and preventing warm, moist air from reaching cold metal surfaces.

How does tubular framing affect insulation thickness and installation?

Tubular framing can create shallower or less uniform cavities than traditional pre-engineered metal buildings. Braces, rounded or rectangular tubes, narrow attachment surfaces, and irregular transitions may affect insulation thickness, fastening methods, and how the vapor-retarder facing is sealed. The system should be designed around the actual framing dimensions rather than treated like a standard metal-building installation.

What R-value should I use?

The appropriate R-value depends on the building’s location, intended use, heating and cooling needs, energy goals, framing depth, and applicable building codes. A storage building may require less insulation than a conditioned workshop, office, or occupied space. CMI can help evaluate the project and recommend practical roof and wall options.

Can I install the system myself?

Some tubular-building insulation systems can be installed by experienced building owners or contractors who are comfortable working with fiberglass, facing materials, fasteners, seams, and roof-level work. The installer should carefully follow the system instructions and all safety requirements. More complex buildings may benefit from professional installation or technical guidance.

How should windows, doors, braces, and base channels be handled?

The insulation and facing should be carefully cut, fitted, fastened, and sealed around each opening and structural detail. Braces may require the material to pass behind, in front of, or around them depending on the system design. Windows, doors, corners, penetrations, and base channels should be finished in a way that maintains the continuity of the thermal and vapor-control layers. Get a quote now!

Ready to Insulate Your Tubular Steel Building?

Send CMI your building dimensions, location, intended use, and project photos. We will help you compare insulation options and plan a roof-and-wall system for the actual structure.

We proudly supply insulation for steel and metal buildings to all states throughout the United States, including Arizona, California, Colorado, Idaho, Montana, Nevada, North Dakota, South Dakota, Utah, and Wyoming, among others. Please request a quote by clicking on the button below.