Grip-Rite 36-in x 32.8-ft (300-sq ft) Fiberglass Base Sheet Roof Underlayment
SKU: 48796340903

Grip-Rite 36-in x 32.8-ft (300-sq ft) Fiberglass Base Sheet Roof Underlayment

Sale price$48.10 Regular price$53.44
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Description

Grip-Rite 36-in x 32.8-ft (300-sq ft) Fiberglass Base Sheet Roof UnderlaymentGrip Rite Fiberglass Roof Underlayment, 36 in x 32. 8 ft A rugged fiberglass base sheet designed for flat roofing applications, this Grip Rite roll covers 300 sq ft and lays flat for fast installation. Ply lines and strong nail holding performance provide a reliable substrate for multi ply roofing systems. Key Features: Fiberglass Construction: Durable base sheet engineered for strength and nail holding ability Easy Install: Rolls out flat with

Grip-Rite Fiberglass Roof Underlayment, 36-in x 32.8-ft

A rugged fiberglass base sheet designed for flat roofing applications, this Grip-Rite roll covers 300 sq ft and lays flat for fast installation. Ply lines and strong nail-holding performance provide a reliable substrate for multi-ply roofing systems.


Key Features:

  • Fiberglass Construction: Durable base sheet engineered for strength and nail-holding ability
  • Easy Install: Rolls out flat with printed ply lines to speed alignment and fastening
  • Flat-Roof Ready: Designed for use with flat roofing; not for asphalt shingles, metal, or wood shakes
  • Generous Coverage: 36 in x 32.8 ft roll covers approximately 300 sq ft
  • Standards & Warranty: Meets ASTM 4601 Type 1; backed by a 1-year limited warranty

Specifications Table:

Specification Details
Coverage Area 300 sq ft
Length 32.8 ft
Width 36 in
Material Fiberglass
Application Method Nail
For Use with Flat Roofing Yes
For Use with Asphalt Shingles No
For Use with Metal Roofing No
For Use with Wood Shakes No
Warranty 1-year limited
Standards ASTM 4601 Type 1
UNSPSC 30151500

Frequently Asked Questions (FAQ):

Q: Can this underlayment be used under asphalt shingles?
A: No. It is intended for flat roofing applications and not for asphalt shingles.


Q: How much area does one roll cover?
A: Approximately 300 square feet per roll.


Q: What is the installation method?
A: Nailed installation; align using the printed ply lines and fasten per local codes.


Q: Is it suitable for metal or wood shake roofs?
A: No, it is not recommended for metal roofing or wood shakes.


Q: Does it meet any standards?
A: Yes, it meets ASTM 4601 Type 1 specifications.


A Sleek, Structured Foundation for Modern Flat Roofs

This fiberglass base sheet sets a clean, confident groundwork that refines the silhouette of a flat roof. I love the crisp ply lines—they guide an impeccably tailored installation, elevating the finish. Pair it with minimalist flashing and tonal gravel for a polished, architectural statement. It’s a quiet essential that underpins the luxury of a well-executed envelope.


Elevate your flat roof system with Grip-Rite’s fiberglass base sheet—order today for fast, reliable installation and lasting performance.

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: 48796340903

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Chase
Carnegie, US
★★★★★ 5
Soft, Cozy, and Great Quality for the Price!
Size: King, Color: Dark Grey
I’m really happy with this Sasttie King Size Comforter Set. The color is a rich dark grey that looks clean and modern, and it instantly made my bedroom feel more put together. The comforter is surprisingly soft and fluffy without being too heavy, and it keeps me warm throughout the night. I also love that it comes as a complete 7-piece set—everything matches perfectly, and the fitted sheet stays in place without slipping. The pillowcases and shams add a nice finished look, and the fabric feels comfortable against the skin. For the price, the quality is honestly impressive. If you want a stylish, comfortable, and convenient bed-in-a-bag set, this one is definitely worth it!
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Reviewed in the United States on November 28, 2025
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The Garib Family
New York, US
★★★★★ 5
Great quality and price
Soft and comfortable. Great quality and price!
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Reviewed in the United States on May 22, 2026
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Patricia Snow
Carnegie, US
★★★★★ 5
Love it
Size: Queen, Color: Dark Grey
I am very pleased with this product bed in a bag for Queen bed. Sheets are a perfect fit and silky soft they are a standard grade thread good price for me being on a budget.
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Reviewed in the United States on May 19, 2026
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Lindsey
Birmingham, US
★★★★★ 4
Comfortable
Size: California King, Color: Wine & Black
Very nice sheet and comforter set. Wish it was a little warmer but I love the way they feel.
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Reviewed in the United States on January 1, 2026
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Tagrid
Grantham, US
★★★★★ 5
Very warm and cozy
Size: Queen, Color: Beige
Nice comforter and really pretty neutral color.
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Reviewed in the United States on May 31, 2026

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