Skip to content
Henry 181 Asphalt Saturated Glass Fabric Roof Repair Fabric, Black, 4 in. x 150 ft.
Regular price $18.20Orders start at $399 — combine any items to reach the minimum. Learn more
Henry 181 Asphalt Saturated Glass Fabric Roof Repair Fabric, Black, 4 in. x 150 ft.
Henry 181 Roof Repair Fabric is a black asphalt-saturated woven glass fabric, 4 in. wide on a 150 ft. roll, used to reinforce roof repairs and flashing details. The 20 x 10 open-mesh weave of pure glass filaments delivers 75 lb/in. tensile strength, resists acid and heat, and will not rot. Sold as one roll and meets ASTM D1668.
Key Features:
- Woven fiberglass: Open-mesh woven fabric made of inert, flexible filaments of pure glass.
- Asphalt saturated: Black glass fabric saturated with asphalt for roof repair use.
- High tensile strength: Provides 75 lb/in. tensile strength with stability and durability.
- Resists degradation: Acid and heat resistant, and will not rot or decay.
- Meets ASTM D1668: Conforms to ASTM D1668, the standard for asphalt-saturated glass fabric.
- Long roll: 4 in. x 150 ft. roll covers long seams and flashing runs.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Henry |
| Sell unit | 1 roll, 4 in. x 150 ft. |
| Product line | Henry 181 Roof Repair Fabric |
| Material | Asphalt-saturated woven glass fabric |
| Available colors | Black |
| Available sizes | 4 in. x 150 ft. |
| Mesh / thread count | 20 x 10 woven open mesh |
| Tensile strength | 75 lb/in. |
| Standards | ASTM D1668 |
| Resistance | Acid and heat resistant; will not rot or decay |
| Intended use | Roof repair reinforcement fabric for seams and flashing details |
Coverage & How Much You Need:
One roll provides 150 linear feet of 4 in. wide reinforcing fabric, enough for roughly 150 ft. of seam or flashing repair. Embed the fabric in roofing cement or mastic, overlapping strips a few inches at splices.
Fit and Compatibility:
Designed to be embedded in asphalt-based roof cements, coatings and mastics on BUR and modified bitumen repairs. Pair with flashing cement such as Henry or Tropical brands sold separately.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 4 in. x 150 ft. roll of black asphalt-saturated glass fabric.
Q: How much does one roll cover?
A: 150 linear feet of 4 in. wide fabric; overlap strip ends when splicing.
Q: How is it installed?
A: Embed the fabric in wet roofing cement or mastic over the repair, then coat over the top to fully encapsulate it.
Q: Will it rot or rust?
A: No, the pure glass filaments are inert, acid and heat resistant, and will not rot or decay.
Q: What standard does it meet?
A: It conforms to ASTM D1668.
Q: How strong is the fabric?
A: It has a tensile strength of 75 lb/in.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Reinforcing fabric is what turns a dab of roof cement into a repair that survives thermal movement; always embed fabric in wet mastic rather than laying it on dry. Keep tension light and broom the fabric flat to avoid wrinkles that create new leak paths. The 4 in. width suits seams, splits and flashing laps; step up to wider fabric for large field repairs.
Asphalt cements and saturated fabrics are messy and hot-work adjacent materials can burn; wear gloves and follow safe roofwork practices.
Add Henry 181 Roof Repair Fabric to your repair kit for reinforced, long-lasting roof patches.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
