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TRI-BUILT ISO Rigid Roof Insulation Board, 2 in. x 4 ft. x 4 ft.
Regular price $22.68Orders start at $399 — combine any items to reach the minimum. Learn more
TRI-BUILT ISO Rigid Roof Insulation Board, 2 in. x 4 ft. x 4 ft.
TRI-BUILT ISO Rigid Roof Insulation is a 2 in. thick polyiso board in a handy 4 ft. x 4 ft. panel, covering 16 sq ft per piece. The smaller panel is convenient for small roofs, repairs and tight work areas. Sold by the piece.
Key Features:
- 2 in. polyiso board: Rigid polyisocyanurate roof insulation in a 2 in. thickness.
- Compact 4 x 4 panel: 4 ft. x 4 ft. size covers 16 sq ft and is easier to handle in tight spaces.
- Repair friendly: Smaller panel suits patches, repairs and small flat-roof areas.
- Lightweight: Approximately 6.08 lb per piece for one-person handling.
- Low-slope use: Intended for low-slope roofing assemblies under the membrane.
- Layerable: Can be combined with other ISO thicknesses to build total thickness.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | TRI-BUILT |
| Manufacturer model | TB-316821 |
| Sell unit | 1 panel, 2 in. x 4 ft. x 4 ft. |
| Product line | ISO Rigid Roof Insulation |
| Dimensions | 4 ft. x 4 ft., 2 in. thick |
| Coverage per unit | 16 sq ft per panel |
| Thickness | 2 in. |
| Material | Polyisocyanurate (ISO) rigid foam roof insulation |
| Weight | 6.08 lb per piece |
| Intended use | Rigid thermal insulation for low-slope roofing assemblies and repairs |
Coverage & How Much You Need:
Each 4 ft. x 4 ft. panel covers 16 sq ft at a single 2 in. layer. Divide the area to be insulated by 16 to determine the number of pieces needed.
Fit and Compatibility:
From the TRI-BUILT rigid roof insulation line; usable with compatible low-slope roofing membranes. Fasteners, plates, adhesives and membrane are sold separately.
Frequently Asked Questions (FAQ):
Q: How much does one panel cover?
A: Each 4 ft. x 4 ft. panel covers 16 sq ft at a 2 in. thickness.
Q: Why a 4x4 panel instead of 4x8?
A: The smaller panel is easier to carry through hatches and doors and wastes less on small repairs.
Q: How is it attached?
A: Per the roofing system manufacturer's specification, typically mechanically fastened or adhered; attachment materials are sold separately.
Q: Can I layer it with larger boards?
A: Yes, ISO boards of different sizes and thicknesses can be combined in staggered layers to reach total thickness.
Q: What comes in one order?
A: One 2 in. x 4 ft. x 4 ft. ISO rigid insulation panel, sold as a single piece.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Keep a few 4 ft. x 4 ft. boards on the truck for curb details, sumps and patch work where a full 4 x 8 sheet is awkward. Stagger joints when layering and keep boards dry until installed. Match the repair board thickness to the surrounding insulation to avoid creating an uneven substrate under the membrane.
Keep rigid polyiso insulation away from open flame, heat and sparks during storage and installation.
Stock TRI-BUILT 2 in. ISO rigid roof insulation 4x4 panels for repairs and small roof areas.
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