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Progressive Foam PFT ProFold Original Fanfold Insulation 1/4 in. or 3/8 in. x 4 ft. x 48 ft., Silver
Regular price $53.00Orders start at $399 — combine any items to reach the minimum. Learn more
Progressive Foam PFT ProFold Original Fanfold Insulation 1/4 in. or 3/8 in. x 4 ft. x 48 ft., Silver
PFT ProFold Original fanfold insulation boards the wall under new siding, leveling the surface for smooth, straight siding installation. Available in 1/4 in. or 3/8 in. thickness, each bundle covers 4 ft. x 48 ft. with a silver facing. It adds exterior insulation that helps meet DOE recommendations and includes a built-in termite control agent.
Key Features:
- Levels the wall: Levels the wall under new siding, providing a consistent, stable base so siding installs smooth and straight.
- Exterior insulation: Adds insulation over studs, which are typically uninsulated, helping homes meet U.S. Department of Energy insulation recommendations as well as state and local codes.
- Termite control: Deters termite infestation with a built-in termite control agent.
- Fanfold format: Fanfold panels fold for fast handling and continuous coverage along the wall.
- Professional grade: Professional grade insulation suited to any siding project.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Progressive Foam |
| Sell unit | 1 bundle, 4 ft. x 48 ft. |
| Product line | ProFold Original |
| Available sizes | ['1/4 in. x 4 ft. x 48 ft.', '3/8 in. x 4 ft. x 48 ft.'] |
| Available colors | Silver |
| Dimensions | 4 ft. x 48 ft. per bundle in 1/4 in. or 3/8 in. thickness |
| Material | Expanded polystyrene fanfold insulation (professional grade) |
| Finish / texture | Silver facing |
| Coverage per unit | 4 ft. x 48 ft. (192 sq. ft.) per bundle |
| Intended use | Exterior wall insulation under new siding |
Coverage & How Much You Need:
Each bundle covers a 4 ft. x 48 ft. area, or about 192 sq. ft. of wall. Estimate wall square footage and divide by 192, adding a small allowance for cuts around openings.
Fit and Compatibility:
Installed under new siding such as vinyl, aluminum or other cladding to level the wall before application. Siding, house wrap and fasteners are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One bundle of ProFold Original fanfold insulation in your choice of 1/4 in. or 3/8 in. thickness, 4 ft. x 48 ft., silver.
Q: How much wall does one bundle cover?
A: Each bundle covers 4 ft. x 48 ft., approximately 192 sq. ft., so divide your wall area by 192 to estimate bundles.
Q: Why add fanfold insulation under siding?
A: Studs make up nearly 25% of a wall and are typically uninsulated; adding this exterior insulation helps meet DOE recommendations and state and local codes while leveling the wall.
Q: Does it help with termites?
A: Yes, it includes a built-in termite control agent that deters termite infestation.
Q: Does thickness matter when choosing 1/4 in. vs 3/8 in.?
A: The thicker 3/8 in. option provides more insulation and more leveling; choose based on wall irregularity and code or R-value targets.
Q: How is it installed?
A: Unfold the panels over the wall sheathing, fasten per manufacturer instructions, and install siding over the leveled surface.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Fanfold insulation is the fastest way to flatten a wavy wall before residing, and it adds R-value over the whole sheathing rather than just between studs. Pick the 1/4 in. sheet for relatively flat walls and the 3/8 in. when you need more leveling. Always overlap seams toward the weather and fasten so panels lie flat before the siding goes on. Pair with proper house wrap beneath for a complete weather barrier.
Verify local code requirements for exterior insulation and vapor management before installing, and cut panels with a sharp blade away from your body.
Order Progressive Foam ProFold Original fanfold insulation for a level, insulated wall under your new siding.
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