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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

★★★★★

"Chose the king size and it fits true to size with no surprises. Used it for a week of meal prep. Couldn't ask for more at this price."

Melissa Gonzalez Melissa Gonzalez May 16, 2026
★★★★★

"Chose the king size and the weight feels balanced and premium. Brought it to a tailgate and it performed. No complaints so far."

Patricia Stewart Patricia Stewart Jul 14, 2026
★★★★★

"Came earlier than the promised date. The weight feels balanced and premium. I keep it in the car for road trips. Customer service was helpful when I had a question."

William Green William Green Jul 2, 2026
★★★★☆

"Got the travel size and the grip is comfortable for long sessions. Used it during a move and nothing shifted. Solid deal, no regrets."

Samuel Roberts Samuel Roberts Jul 8, 2026
★★★★☆

"Got the charcoal one and the compartments keep everything organized. I've been using it daily for about two weeks now. Would buy again."

Betty Watson Betty Watson Aug 13, 2026
★★★★★

"Tracking info was accurate the whole way. Stitching held up better than expected. Brought it camping and it held up fine. Packaging tape was loose on one end, product was fine. I'm in Salt Lake City, UT. No complaints so far."

Laura Wright Laura Wright Aug 3, 2026
★★★★★

"Bought the starter kit and the finish is clean with no rough edges. Running it through my routine for a month. Solid deal, no regrets."

Jerry Thompson Jerry Thompson May 28, 2026
★★★★★

"Chose the larger size and it fits true to size with no surprises. Used it during a move and nothing shifted. Exactly what I needed."

Brandon Adams Brandon Adams May 26, 2026
★★★★★

"Ordered the refurbished unit and the screen is sharp and bright in daylight. I've been using it daily for about two weeks now. Runs a touch small but nothing a size up didn't fix. Exactly what I needed."

Deborah Allen Deborah Allen Jun 25, 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

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