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Polyglass PolyBrite Reinforcing Cotton Fabric Roll for Roofing Seam Mastics
Regular price $59.50Orders start at $399 — combine any items to reach the minimum. Learn more
Polyglass PolyBrite Reinforcing Cotton Fabric Roll for Roofing Seam Mastics
Polyglass PolyBrite Reinforcing Cotton is a standard-grade asphalt-saturated cotton fabric for reinforcing seam mastics in roofing and waterproofing repairs. The loomed membrane is lightweight yet strong, creating a firm mechanical bond with the coating. Rolls are available in 4 in., 6 in., 12 in. and 40 in. widths in 150 ft or 300 ft lengths, sold per roll.
Key Features:
- Asphalt saturated: A durable loomed cotton membrane thoroughly saturated with selected asphalts for reliable performance in mastic systems.
- Mechanical bond: Provides a firm mechanical bond between the coating layers, helping insure a long-lasting application.
- Flexible and strong: The fabric is firm, strong, extremely flexible and durable, conforming easily to seams and detail areas.
- Multiple widths: Available in standard slit widths of 4 in., 6 in. and 12 in. by 150 ft, plus 6 in. x 300 ft, 12 in. x 300 ft and 40 in. x 324 ft options.
- New and old roofs: An excellent repair fabric for both new and old construction in roofing and waterproofing applications.
- One fabric fits most: One product fits most repairs, reducing the number of fabrics you need on the truck.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Polyglass |
| Sell unit | 1 roll |
| Product line | PolyBrite Reinforcing Cotton |
| Material | Asphalt-saturated cotton fabric |
| Color | Black |
| Available sizes | 4 in. x 150 ft, 6 in. x 150 ft, 12 in. x 150 ft, 6 in. x 300 ft, 12 in. x 300 ft, 40 in. x 324 ft |
| Widths | 4 in., 6 in., 12 in., 40 in. |
| Roll lengths | 150 ft and 300 ft; 40 in. width in 324 ft |
| Type | Standard grade reinforcing fabric |
| Intended use | Reinforcing seam mastics in roofing and waterproofing applications |
Coverage & How Much You Need:
A 150 ft roll covers 150 linear feet of seam at its stated width; a 300 ft roll covers 300 linear feet. Choose a width (4 in., 6 in., 12 in. or 40 in.) that extends beyond the seam or repair area into the surrounding coating on both sides.
Fit and Compatibility:
Designed for use with Polyglass seam mastics and compatible asphalt coating systems in roofing and waterproofing repairs. It is a reinforcement fabric, so the mastic or coating and primers are applied around it and sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One roll of PolyBrite Reinforcing Cotton in the width and length you select.
Q: Which width should I choose?
A: 4 in. suits narrow seams, 6 in. and 12 in. cover most seam and flashing repairs, and 40 in. handles large patch areas; pick a width that laps well past the repair edges.
Q: How is it installed?
A: Embed the fabric into the wet seam mastic or coating so it is fully encapsulated, forming a mechanical bond between coating layers.
Q: Is it really saturated with asphalt?
A: Yes, the loomed cotton membrane is thoroughly saturated with selected asphalts.
Q: Can it be used on existing roofs?
A: Yes, it is an excellent repair fabric for both new and old construction in roofing and waterproofing applications.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Reinforcing fabric is the difference between a mastic patch that holds and one that cracks; embed PolyBrite fully into wet mastic with no dry spots or wrinkles. The 6 in. width is the everyday choice for seams and flashings, while the 12 in. and 40 in. widths suit wider splits or full patches. For large-area repairs, plan laps so the fabric edges overlap into coated, not bare, substrate.
Work safely on roofs, follow the mastic manufacturer's solvent and temperature precautions, and keep the asphalt-saturated fabric away from ignition sources.
Order Polyglass PolyBrite Reinforcing Cotton rolls today and build seams and repairs that stay bonded.
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