GAF RUBEROID® 20 Smooth SBS Modified Bitumen Membrane Roll, 1.5 Square (161.5 sq ft), 90 mil
RUBEROID 20 Smooth SBS membrane roll
GAF RUBEROID® 20 Smooth is a tough SBS-modified bitumen roofing membrane with a resilient non-woven glass mat core. Designed for durable commercial/low-slope roofing assemblies, it provides a lightweight, cost-effective smooth-surface sheet for multi-ply systems.
Key Features:
- Durable Reinforced Core: Non-woven glass mat coated with flexible SBS polymer-modified asphalt for strength and resilience
- Lightweight System Design: Installed roof designs weigh under three pounds per square foot
- Smooth-Surface Sheet: Smooth finish suited for multi-ply modified bitumen assemblies
- Commercial Low-Slope Use: Designed to meet stringent GAF manufacturing specifications
- Cost-Effective Base Sheet Option: Commonly used as a base in 20/30 systems
Specifications Table:
| Specification | Details |
|---|---|
| Product name | GAF SBS Ruberoid 20 1.5 Square |
| Category | Roofing Materials |
| Sub-category | SBS Modified Bitumen Membranes |
| Unit of measure | RL - Roll |
| Surface | Smooth |
| Coverage | 1.5 sq (161.5 sq ft) |
| Thickness | 90 mil |
| Roll weight | 60.4 lb |
| Membrane construction | Non-woven glass mat coated with SBS polymer-modified asphalt |
| System guarantees | Up to 20 years (see applicable warranty/guarantee for terms and restrictions) |
Frequently Asked Questions (FAQ):
Q: What type of roofing product is this?
A: It’s an SBS polymer-modified bitumen smooth membrane roll (reinforced with a non-woven glass mat) used in commercial/low-slope roofing assemblies.
Q: How much area does one roll cover?
A: Approximately 1.5 square (about 161.5 sq ft) per roll.
Q: What is the thickness of this membrane?
A: The listed thickness is 90 mil.
Q: How heavy is a roll?
A: The listed roll weight is about 60.4 lb.
Q: Is this membrane available with warranties/guarantees?
A: GAF notes system guarantees may be available for up to 20 years (see applicable warranty/guarantee for full terms and restrictions).
A sleek, smooth foundation for a roofline that feels intentionally tailored
There’s a quiet luxury in materials that perform with confidence—RUBEROID® 20 Smooth brings that disciplined, architectural sensibility to the roof. The smooth surface reads clean and refined, while the SBS-modified asphalt and glass-mat reinforcement deliver a resilient backbone built for demanding low-slope applications. Pair it within a thoughtful multi-ply assembly to create a roof system that feels engineered, edited, and enduring. It’s the kind of behind-the-scenes essential that elevates a building’s comfort and longevity—true modern luxury.
Choose GAF RUBEROID® 20 Smooth to build a durable, clean-finish modified bitumen roof assembly with dependable performance.