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InsulFoam C5 Tapered EPS Roof Insulation, 4 ft. x 8 ft., 1.25 pcf Density
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InsulFoam C5 Tapered EPS Roof Insulation, 4 ft. x 8 ft., 1.25 pcf Density
InsulFoam C5 tapered EPS roof insulation is a 4 ft. x 8 ft. expanded polystyrene panel at 1.25 pcf density, sold per piece with 10 pieces per bundle. It creates positive roof slope and thermal resistance in low-slope roof assemblies. Install over the deck under the approved roof membrane per manufacturer instructions.
Key Features:
- Tapered profile: The C5 tapered design provides slope for drainage on low-slope roof assemblies.
- 1.25 pcf density: Specified at 1.25 lb per cubic foot density for roof insulation performance.
- 4 ft. x 8 ft. panel: The standard 4 ft. x 8 ft. panel size simplifies layout and coverage planning.
- Certified EPS: Meets ASTM C578 and carries UL, FM, Miami-Dade County and ICC-ES approvals as listed.
- Bundled delivery: Panels ship 10 pieces per bundle for efficient jobsite handling.
- Sustainable materials: Listed with Energy Star and NAHB National Green Building Program recognition and USGBC membership.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | InsulFoam |
| Sell unit | 1 panel, 4 ft. x 8 ft. (10 per bundle) |
| Product line | InsulFoam C5 tapered roof insulation |
| Dimensions | 4 ft. x 8 ft. panel, tapered (C5 taper) |
| Material | Expanded polystyrene (EPS) |
| Density | 1.25 pcf |
| Pack quantity | 10 pieces per bundle |
| Coverage per unit | 32 sq ft per panel (4 ft. x 8 ft.) |
| Approvals | ASTM C578; UL Approved; FM Approved; Miami-Dade County; ICC-ES Approved; Energy Star; NAHB National Green Building Program; USGBC Member |
| QXO category | Roofing Insulation |
| Intended use | Tapered roof insulation for low-slope roofing assemblies |
| Product weight, complete sell unit | 1 lb |
Coverage & How Much You Need:
Each 4 ft. x 8 ft. panel covers 32 sq ft before accounting for the taper layout; order panels to match the field dimensions and taper scheme of your roof design. Bundles of 10 cover 320 sq ft as a planning figure.
Fit and Compatibility:
Used in low-slope roof assemblies beneath approved roof membranes and cover boards per the roofing system manufacturer. Membrane, adhesives, fasteners and cover boards are sold separately; verify the assembly with the membrane manufacturer.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One piece of InsulFoam C5 tapered EPS roof insulation, 4 ft. x 8 ft., 1.25 pcf density; panels ship 10 per bundle.
Q: What does one panel cover?
A: A 4 ft. x 8 ft. panel covers 32 sq ft of roof area before taper-layout allowances.
Q: What standards does it meet?
A: Listed standards include ASTM C578, UL, FM, Miami-Dade County and ICC-ES approvals, plus Energy Star and NAHB green building recognition.
Q: What does C5 tapered mean?
A: C5 refers to this tapered panel configuration, which provides drainage slope in low-slope roof assemblies.
Q: Is the membrane included?
A: No, this listing is insulation only; the roof membrane, adhesives and fasteners are purchased separately.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Tapered EPS is sized from a tapered layout drawing, so order panels to match your crane-loped plan including sumps and crickets. Confirm the substrate and attachment method (fully adhered or mechanically fastened) with the membrane manufacturer before installation. At 1.25 pcf this density suits systems requiring higher compressive resistance than standard EPS fills; add a cover board where the system specification calls for one.
Handle large lightweight panels carefully in wind and keep them clear of open flame, solvents and hot work; install per the roofing system manufacturer and local code.
Order InsulFoam C5 tapered EPS 4 ft. x 8 ft. roof insulation for your low-slope roofing project.
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