Faced fiberglass insulation with a clean white vinyl finish — thermal control, condensation management and a bright, finished interior for post-frame and metal buildings.
Vinyl Back Insulation provides an added layer of thermal control while also improving the interior appearance of the building. The vinyl facing creates a clean, finished look while helping manage condensation and support overall energy efficiency.
Why Vinyl Back Insulation
Built to perform — here's what sets it apart.
Year-round thermal control
A faced fiberglass blanket slows heat transfer — warmer in winter, cooler in summer, and quieter inside.
Controls condensation
The white vinyl facing is a vapor barrier that helps keep warm, moist interior air from condensing on cold metal — cutting drips, rust and mold.
Clean, finished interior
The bright white vinyl face gives walls and ceilings a smooth, light-reflective, washable look — no exposed fiberglass on display.
Built for post-frame & metal
The industry-standard way to insulate pole barns, shops, garages and post-frame buildings — installed as a continuous blanket for fewer gaps.
Specifications
Thickness
2″ & 3″
Facing
White vinyl vapor barrier
Type
Faced fiberglass blanket
R-value
About R-7 at 2″ & R-10 at 3″ (varies by product)
Vapor barrier
Low-perm white vinyl facing
Install
Continuous blanket — tape the seams for a sealed vapor barrier
Recommended panel
26-gauge metal
Best for
Walls & ceilings of pole barns, shops, garages & post-frame buildings
Frequently asked questions
Vinyl-back blanket comes in a range of R-values. The common thicknesses are about R-7 at 2″ and R-10 at 3″, with thicker rolls available for higher needs. We’ll recommend the right R-value for how you’ll use the building and your climate.
The white vinyl laminated to one side does two jobs: it’s a vapor barrier that helps control condensation on the metal, and it gives the interior a clean, bright, washable finished surface instead of exposed fiberglass.
Yes — faced insulation with a low-perm vinyl vapor barrier slows warm, humid indoor air from reaching the cold metal skin where it would otherwise condense, drip and cause rust or mold. Taping the seams keeps the vapor barrier continuous.
We stock 2″ and 3″ vinyl-back insulation. Thicker options can be ordered for higher R-value needs — just ask.
We recommend pairing Vinyl Back Insulation with 26-gauge metal panels — the heavier gauge gives a sturdier, cleaner finished result.
Walls and ceilings of post-frame and metal buildings — pole barns, shops, garages and agricultural buildings.
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Bret Parker
Waverly, TN
PAC lumber is the place to go for just about anything you need. Had them build my garage and it turned out awesome! Easy to design right in the store. Very professional crew hardly any waste left at the end of the job. Anytime I called I was treated great and all my questions were answered. Thanks to Christopher and all the PAC lumber employees for all the help.
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Waverly, TN
PAC Lumber is fantastic. Always helpful to me - a complete novice when it comes to building projects. Several times they have stayed open a few extra minutes for me - and always with a smile on their face. Highly recommend PAC.
Tim Masinick
Waverly, TN
I can’t say enough good things about them.
I wanted a hobby shop on a piece of property I bought. I called PAC and the rest was easy. They had great advice and very fair pricing. I live out of state and put my complete trust in the crew. They not only met my expectations but surpassed them. I can’t say enough good things about them. Would highly recommend them.
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Waverly, TN
These are the most polite and patient people I’ve ever dealt with. Super efficient and super quality. Top line lumber and metal . I would definitely use these guys again.
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Waverly, TN
Love this store!! Everybody always super helpful and always has everything we need! Recently bought a hay barn package from PAC and very happy with the product and service we got! Highly recommend visiting this store!
Scot Sweetman
Waverly, TN
Recently dealt with Carson here to buy a building, my experience was great. Carson was able to setup everything online and answered every question we had (my wife and I had plenty of questions being our first building purchase) thank you for being so helpful and I hope to do more business with you guys in the future.
Jacqueline Hopkins
Waverly, TN
Couldn't ask for better costomer service! Carson answered all of my questions, was quick to respond and was very patient with me. Process was so easy! Can't wait to see the finished product!
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Waverly, TN
We have been in business over 42 years and haven't ever done business with a better group of folks ! Very knowledge able about there products and as fairly priced as you will find. Excellent place to shops for you hardware , lumber and household needs!!!
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Waverly, TN
When I've been in the store the staff was courteous and very helpful. Prices were well within affordability range. Very clean and well managed.
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