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Henry G100 S/S SBS Modified Bitumen Base Sheet 39-3/8 in. x 49.2 ft. Roll
Regular price $177.61Orders start at $399 — combine any items to reach the minimum. Learn more
Henry G100 S/S SBS Modified Bitumen Base Sheet 39-3/8 in. x 49.2 ft. Roll
Henry G100 S/S is a sanded-surface SBS modified bitumen base sheet designed as the base or first ply in a high-performance two-ply modified bitumen system, or as a ply in a two-ply Protected Membrane roof system. One roll measures 39-3/8 in. x 49.2 ft. in black. The sanded upper and lower surfaces accept mopping or cold adhering.
Key Features:
- Base ply design: Designed as the base or first ply in a two-ply modified bitumen roofing system or as a ply in a two-ply Protected Membrane system.
- Sanded surfaces: Sanded upper and lower surfaces allow mopping or cold adhering to the substrate and receiving mop or cold adhered cap sheets.
- SBS polymer benefits: SBS polymer provides flow resistance at high temperatures and flexibility at low temperatures for lasting durability.
- Glass reinforcement: Glass reinforcement provides dimensional stability.
- Versatile application: Suited to new construction, re-roofing, and retrofit roofing projects.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Henry |
| Sell unit | 1 roll, 39-3/8 in. x 49.2 ft. |
| Product line | Henry G100 S/S Base Sheet |
| Material | SBS modified bitumen with glass reinforcement |
| Color / finish | Black, sanded upper and lower surfaces (S/S) |
| Dimensions | 39-3/8 in. x 49.2 ft. |
| Available sizes | 39-3/8 in. x 49.2 ft. |
| Intended use | Base or first ply in two-ply modified bitumen systems; ply in two-ply Protected Membrane roofing |
| Applications | New construction, re-roofing, and retrofit roofing |
| Installation | Mop-applied or cold adhered to substrate and cap sheet |
Coverage & How Much You Need:
One roll of 39-3/8 in. x 49.2 ft. yields approximately 161 sq. ft. nominal per roll. Deduct side and end laps required by the specified two-ply system to calculate net coverage per roll.
Fit and Compatibility:
Designed to be mopped or cold adhered to the substrate and to receive mop or cold adhered modified bitumen cap sheets as part of a Henry two-ply system. Cap sheets, primers, and adhesives are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One roll of Henry G100 S/S base sheet, black, 39-3/8 in. x 49.2 ft.
Q: How much does one roll cover?
A: Nominal coverage is about 161 sq. ft. before laps; check your two-ply system specification for overlap requirements.
Q: How is it installed?
A: The sanded surfaces are designed for mopping or cold adhering to the substrate, and the sheet accepts mopped or cold adhered cap sheets.
Q: What projects is it for?
A: New construction, re-roofing, and retrofit roofing applications.
Q: Why glass reinforcement?
A: Glass reinforcement provides dimensional stability in the finished membrane.
Q: How does SBS help?
A: SBS polymer provides flow resistance at high temperatures and flexibility at low temperatures for lasting durability.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
SBS-modified base sheets like the G100 S/S give the membrane the low-temperature flexibility and high-temperature flow resistance needed for long-term two-ply performance. Confirm substrate dryness and prime porous decks before mopping or cold adhering, and stagger laps between plies. Use a compatible Henry cap sheet over the base ply to complete the system.
Hot mopping and torch work on bituminous materials are fire hazards; follow the manufacturer's application instructions and local fire code, and use proper fall protection.
Order the Henry G100 S/S modified bitumen base sheet roll for a durable two-ply roofing system.
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