SKU: 21895955286

GAF Liberty Base Sheet, Self‑Adhering, 3.28-ft W x 66-ft L (200-sq ft) Black Roll Roofing

Sale price$132.58 Regular price$147.31
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Ships within 48 hours · Estimated delivery Sep 20 - Sep 25

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Description

GAF Liberty Base Sheet, Self‑Adhering, 3.28-ft W x 66-ft L (200-sq ft) Black Roll RoofingGAF Liberty Self Adhering Base Ply Roll Roofing, 200 sq ft The GAF Liberty Base Sheet is a self adhering modified bitumen membrane for low slope roofs. Designed to install without torches, hot asphalt, or solvents, it serves as the base or ply layer beneath Liberty cap sheets to deliver durable, long lasting protection. Key Features: Self Adhering Installation: Peel and stick application eliminates torches, hot asphalt, and solvents for safer, faster

GAF Liberty Self-Adhering Base/Ply Roll Roofing, 200-sq ft

The GAF Liberty Base Sheet is a self-adhering modified bitumen membrane for low-slope roofs. Designed to install without torches, hot asphalt, or solvents, it serves as the base or ply layer beneath Liberty cap sheets to deliver durable, long-lasting protection.


Key Features:

  • Self-Adhering Installation: Peel-and-stick application eliminates torches, hot asphalt, and solvents for safer, faster installs
  • Durable Construction: Glass mat reinforcement coated with polymer-modified asphalt for strength and flexibility
  • Complete System Compatibility: Use as a base sheet with LIBERTY SBS Self‑Adhering Cap Sheet or as a ply sheet in modified bitumen systems
  • Time-Saving Setup: Minimal prep and cleanup helps speed up projects
  • Low-Slope Protection: Ideal for many primed substrates on residential or light commercial low-slope roofs

Specifications Table:

Specification Details
Series Name Liberty Base Sheet
Type Base sheet
Color/Finish Family Black
Manufacturer Color/Finish Black
Coverage Area 200 sq ft
Length 66 ft
Width 3.28 ft
Package Quantity 1
Underlayment Required No
Water Resistant Yes
Waterproof No
Warranty 10-year limited
Roll Weight 88 lbs
UNSPSC 30151500
Material Glass mat reinforced, polymer-modified asphalt
Installation Self-adhering (peel-and-stick) for primed substrates
System Use Use as base or ply sheet with Liberty SBS Self‑Adhering Cap Sheet

Frequently Asked Questions (FAQ):

Q: Is additional adhesive or torching required?
A: No. This is a self‑adhering membrane that installs without torches, hot asphalt, or solvent-based adhesives.


Q: What coverage does one roll provide?
A: One roll covers approximately 200 sq ft (3.28-ft wide by 66-ft long).


Q: Is it waterproof by itself?
A: It is water resistant; use with a compatible LIBERTY cap sheet to complete the waterproof roofing system.


Q: What surfaces can it be applied to?
A: It is suitable for many primed substrates on low-slope roofs; follow GAF installation guidelines.


Q: What is the warranty?
A: 10-year limited warranty when installed per manufacturer instructions.


Sleek, Seamless Confidence for Low‑Slope Roofs

Liberty’s self-adhering base sheet brings a refined, uniform surface to low-slope structures, transforming the roof into a clean, purposeful plane. I love the quiet sophistication of the black finish and the tidy seams that feel intentional and modern. Pair it with the Liberty cap sheet for a polished, architectural look that complements contemporary exteriors. It’s a smart, essential layer that marries style with enduring performance.


Choose GAF Liberty Base Sheet today for a safer, faster peel-and-stick install and long-lasting low-slope roof protection.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21895955286

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Diego
West Palm Beach, US
★★★★★ 5
It works miracles
I was amazed by the incredible difference it made on my RV. Check the pictures. The difference is of such a magnitude that we were amazed by the final results. Brought my rig back to life
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025
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Dan K.
New York, US
★★★★★ 5
Bringing a 1976 MG Midget to the modern world!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
I've been restoring a 1976 MG Midget barn find. I bought some Sinless liner to help make the car rattle less and feel more solid. This product is easy to cut, easy to install, and extremely sticky. I used it to line the trunk, the interior, and even some under the hood of the old MG. The adhesive stands up to the brutal temperature of the engine bay, and when (by accident) some fuel spilled onto the foam, it didn't fall apart or turn to mush. Thanks to Siless, the MG now feels like a modern car. The floor pans feel much more solid, the doors make a heftier thud when you close them, and the trunk no longer sounds like a percussion instrument when you touch it. If you know what you're doing, this product will transform the feel of a car. I found that 36 sq ft was enough for my MG Midget, but for a bigger car I would want more. The pattern on the back helped me to cut perfectly measured squares and rectangles. The foam itself doesn't have a strong odor, it works super well, and has held up to several months of changing temperatures (in the Midwest US.)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 11, 2025
M
Verified Purchase
Mike S.
Battle Creek, US
★★★★★ 5
Excellent Car Sound Deadening and Heat Insulation Solution
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
If you're looking for a high-quality car sound deadening and heat insulation material, then the Siless Liner 157 (4 mm) mil 36 sqft is definitely worth considering. This product is designed to offer superior noise reduction and heat insulation for your car, making your driving experience more comfortable and enjoyable. The closed-cell foam material used in this product is of premium quality, and it effectively blocks out external noise and vibrations. This means you can enjoy a quieter and more peaceful ride, even on noisy roads. In addition, the Siless Liner 157 also provides excellent heat insulation, which can help keep your car cooler in hot weather. One of the best things about this product is that it's very easy to install. You don't need any special tools or equipment, and the material can be easily cut to fit any shape or size. It's also very lightweight and flexible, which makes it easy to work with. Overall, the Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat is an excellent choice for anyone looking to improve the comfort and performance of their car. It's a high-quality product that delivers on its promises, and it's definitely worth the investment.
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Reviewed in the United States on March 12, 2023
M
Verified Purchase
Marie Phillips
Los Angeles, US
★★★★★ 4
Heavy-Duty That Works!
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
This extreme sound deadening mat performs well for reducing road noise and vibration. It feels dense and adheres securely when properly applied. Once installed, it noticeably improves interior quietness. Overall, it’s a strong choice for more serious sound insulation projects.
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Reviewed in the United States on May 12, 2026
J
Verified Purchase
J Whitehead
Massapequa, US
★★★★★ 5
Good product, quite sticky I must say.
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Worked for my van insulation
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026

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