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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

★★★★★

"Went with the small and the color matched the listing exactly. Brought it camping and it held up fine. Slightly heavier than expected, still well balanced though. Would recommend."

William Jackson William Jackson May 18, 2026
★★★★★

"Got the travel size and it feels sturdy in the hand. I use it in the garage most evenings. Glad I went with this one."

Daniel Taylor Daniel Taylor Jul 23, 2026
★★★★☆

"Chose the stainless version and the stitching has held up better than expected. Brought it to a tailgate and it performed. I'm in Pittsburgh, PA. Pleasantly surprised."

Michelle Ali Michelle Ali Aug 13, 2026
★★★★★

"Picked the gray model and the build quality is better than the photos suggested. Brought it to a tailgate and it performed. Would buy again."

Jessica Brooks Jessica Brooks May 20, 2026
★★★★★

"Got the olive green and the weight feels balanced and premium. Brought it to a tailgate and it performed. Color is slightly darker than the listing photo but I actually like it. Five stars from me."

Patrick Diaz Patrick Diaz Jul 2, 2026
★★★★★

"Got the olive green and it does exactly what it's supposed to do. Carried it through a busy work week. Instructions could be a bit clearer, but I figured it out. Would buy again."

Donna Scott Donna Scott Aug 2, 2026
★★★★★

"Bought the starter kit and the fabric is surprisingly breathable. Took it to the lake house for the weekend. Instructions could be a bit clearer, but I figured it out. I'm in Tampa, FL. Glad I went with this one."

Robert Wilson Robert Wilson Jul 27, 2026
★★★★★

"Picked the blue one and the cushioning is supportive after hours. It's been my go-to for morning coffee runs. Solid deal, no regrets."

Donna Bailey Donna Bailey Jul 12, 2026
★★★★☆

"Picked the matte black and the screen is sharp and bright in daylight. Brought it to a tailgate and it performed. Customer service was helpful when I had a question."

Tyler Young Tyler Young May 4, 2026
★★★★★

"Got the olive green and it feels sturdy in the hand. Running it through my routine for a month. I'm in Miami, FL. Couldn't ask for more at this price."

Amy Wood Amy Wood Jul 9, 2026

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