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GAF RUBEROID® 20 Smooth SBS Modified Bitumen Membrane Roll, 1.5 Square (161.5 sq ft), 90 mil

$155.00

SKU: ZAOD85018 Category:
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Description

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.

Reviews

★★★★★

"Packaging was secure and nothing moved. The weight feels balanced and premium. Took it to the lake house for the weekend. Glad I went with this one."

Angela Baker Angela Baker May 19, 2026
★★★★★

"Chose the larger size and the color matched the listing exactly. Used it on my commute all month. I'm in Minneapolis, MN. Customer service was helpful when I had a question."

Donna Patel Donna Patel Jun 18, 2026
★★★☆☆

"Picked the red option and the stitching has held up better than expected. It keeps up with my home office setup. Took a minute to snap together, fits great now. Happy with my purchase."

Scott Bennett Scott Bennett Jul 21, 2026
★★★★☆

"Packaging was secure and nothing moved. Connectors click in securely. Carried it through a busy work week. I'm in Phoenix, AZ. Shipping was quick and the item delivered."

Maria Hill Maria Hill Jun 19, 2026
★★★★☆

"Picked the red option and the zipper glides without catching. Used it at the desk for video calls all month. Would buy again."

Margaret Brown Margaret Brown Aug 6, 2026
★★★☆☆

"Got the navy version and the cushioning is supportive after hours. Used it on my commute all month. Worth the money."

Benjamin Ramirez Benjamin Ramirez Jul 22, 2026
★★★★★

"Picked the red option and the color matched the listing exactly. Used it for a week of meal prep. The strap is a little long for me, easy enough to adjust. Exactly what I needed."

Jennifer King Jennifer King Jun 27, 2026
★★★★★

"Ordered the 3-pack on sale and the stitching has held up better than expected. Took it on a road trip last weekend. Worth the money."

Steven Roberts Steven Roberts Aug 4, 2026
★★★★★

"Went with the wide fit and it fits true to size with no surprises. Brought it to a tailgate and it performed. Definitely a repeat customer after this."

Andrew Murphy Andrew Murphy May 8, 2026
★★★★★

"Ordered two in different colors and the weight feels balanced and premium. It's handled my daily dog walks without issue. Took a minute to snap together, fits great now. I'm in Oklahoma City, OK. Solid deal, no regrets."

Thomas Thompson Thomas Thompson Jul 16, 2026

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