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CertainTeed Flintlastic Base 20 Fiberglass-Reinforced Modified Bitumen Base Sheet, 39-3/8 in. x 49 ft. 6 in. Roll, Black
Regular price $117.00Orders start at $399 — combine any items to reach the minimum. Learn more
CertainTeed Flintlastic Base 20 Fiberglass-Reinforced Modified Bitumen Base Sheet, 39-3/8 in. x 49 ft. 6 in. Roll, Black
CertainTeed Flintlastic Base 20 is a fiberglass-fabric-reinforced modified bitumen base sheet used in two-ply or multi-layer fire-rated roofing systems. The roll is 39-3/8 in. x 49 ft. 6 in., black, surfaced with a mineral release agent. One roll per sell unit.
Key Features:
- Fiberglass reinforced: Reinforced with a tough fibrous glass fabric for dimensional stability.
- System base sheet: Utilized in two-ply or multi-layer modified bitumen fire-rated roofing systems.
- Versatile substrates: Suitable for new construction and recover over a variety of substrates.
- Meets ASTM standards: Meets or exceeds ASTM D4601, Type II and ASTM D6163, Grade S, Type 1.
- Substantial thickness: 2.3 mm (92 mils) thick for a robust base layer.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Certainteed |
| Sell unit | 1 roll, 39-3/8 in. x 49 ft. 6 in. |
| Product line | Flintlastic Base 20 |
| Available colors | ['Black'] |
| Available sizes | 39-3/8 in. x 49 ft. 6 in. roll |
| Material | Modified bitumen with wet process fiber glass support mat |
| Dimensions | 39-3/8 in. x 49 ft. 6 in. |
| Thickness | 2.3 mm (92 mils) |
| Coverage per unit | Approximately 1 roofing square per roll before laps (verify with application requirements) |
| Approvals | Meets or exceeds ASTM D4601, Type II and ASTM D6163, Grade S, Type 1 |
| Finish / texture | Mineral release agent surfacing |
| Intended use | Base sheet in two-ply or multi-layer modified bitumen fire-rated membrane assemblies, new construction and recover |
Coverage & How Much You Need:
One roll measures 39-3/8 in. x 49 ft. 6 in., roughly one roofing square (100 sq ft.) of nominal material; plan laps and waste per the membrane assembly specification when sizing a job.
Fit and Compatibility:
Used as the base ply in CertainTeed Flintlastic modified bitumen systems; pair with a Flintlastic cap or ply sheet and approved adhesives or mopping per system specification. Not a standalone roofing membrane.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One roll of Flintlastic Base 20, black, 39-3/8 in. x 49 ft. 6 in.
Q: What role does this sheet play?
A: It is the base ply in two-ply or multi-layer modified bitumen fire-rated roofing systems; a cap or ply sheet is applied over it.
Q: Can it be used in recover applications?
A: Yes, it is suitable for new construction and recover over a variety of substrates.
Q: What standards does it meet?
A: It meets or exceeds ASTM D4601, Type II and ASTM D6163, Grade S, Type 1.
Q: How thick is the sheet?
A: The sheet is 2.3 mm (92 mils) thick with a fibrous glass reinforcement.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Flintlastic Base 20 is the correct base ply for specified Flintlastic membrane builds, whether fully adhered, mechanically attached or mopped, so follow the system spec for attachment. Roll out the sheet without wrinkles and let it relax before adhering, shiplapping side laps as specified. Over a variety of substrates, priming or a suitable separator may be required by the system design.
Hot-mopping and torch or solvent-based application methods carry fire and burn hazards; follow the membrane system's application method and all applicable fire-safety requirements.
Order CertainTeed Flintlastic Base 20 rolls now for a code-conscious base ply in your modified bitumen system.
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