Grip-Rite 36-in x 32.8-ft (300-sq ft) Fiberglass Base Sheet Roof Underlayment
Regular price $53.44Grip-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.
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