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Johns Manville Invinsa Roof Board, 0.25 in. x 4 ft x 4 ft Protective Roof Board
Regular price $17.80Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville Invinsa Roof Board, 0.25 in. x 4 ft x 4 ft Protective Roof Board
The Johns Manville Invinsa roof board is a resilient, lightweight 0.25 in. thick board in a 4 ft x 4 ft size that protects roof insulation beneath the membrane. One order unit is one board covering 16 sq ft. It works with the membrane above as an integral component of the JM roof system.
Key Features:
- Resilient roof board: Invinsa is a resilient, lightweight roof board for use as an integral roof system component.
- Protects insulation: It provides a protective layer for insulation while working with the membrane above.
- 16 sq ft per board: The 4 ft x 4 ft board covers 16 square feet and is easy to handle in tight areas.
- 0.25 in. thickness: The slim 0.25 in. profile adds protection without significant build-up.
- Code-listed: UL Classified, FM Approved, and Miami-Dade County Approved to ASTM C1289, Type II, Class 4.
- Light handling: At about 6.5 lb per board, it is easy to carry and position on the roof.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Manufacturer model | 90001033 |
| Sell unit | 1 board, 0.25 in. x 4 ft x 4 ft |
| Product line | Invinsa Roof Board |
| Material | Gypsum-based roof board (ASTM C1289 Type II) |
| Dimensions | 4 ft x 4 ft, 0.25 in. thick |
| Thickness | 0.25 in. |
| Coverage per unit | 16 sq ft per board |
| Weight | 6.5 lb per board |
| Approvals | UL Classified; FM Approved; Miami-Dade County Approved; ASTM C1289, Type II, Class 4, Grades 1, 2, and 3 |
| Intended use | Protective roof board over insulation in low-slope roofing |
| Algae resistance | No |
Coverage & How Much You Need:
One 4 ft x 4 ft board covers 16 square feet. Divide the roof area by 16 and add for cuts and waste around edges and penetrations.
Fit and Compatibility:
Invinsa installs over JM roof insulation beneath the roofing membrane in a JM system. Fasteners, plates, or adhesives follow the specified assembly and are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One 0.25 in. x 4 ft x 4 ft Invinsa roof board, sold per piece.
Q: How much area does one board cover?
A: One 4 ft x 4 ft board covers 16 square feet before cuts and waste.
Q: What is Invinsa used for?
A: It is a protective roof board installed over insulation as part of the roof system, working with the membrane above.
Q: How is it installed?
A: Attach per the specified JM roof assembly with fasteners and plates or approved adhesive.
Q: Is it approved for my system?
A: It is UL Classified, FM Approved, and Miami-Dade County Approved to ASTM C1289, Type II, Class 4; confirm the project spec.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
The 4x4 format is convenient for smaller roofs, patch work, and areas with many penetrations, while the 4x8 sheet suits open decks. Keep board joints tight and staggered over insulation joints. Confirm the specified board grade and attachment pattern from the JM assembly specification before ordering.
Score-and-snap cutting produces sharp edges and dust; wear gloves, eye protection, and a dust mask per the product SDS.
Order the Johns Manville Invinsa 0.25 in. 4x4 roof board for your low-slope roofing project.
Product Documents:
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