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ASC 911 Silicone Wet Patch
Regular price $146.00Orders start at $399 — combine any items to reach the minimum. Learn more
ASC 911 Silicone Wet Patch Flashing Grade Roof Patch, White, 2 Gallon Pail
ASC 911 Silicone Wet Patch is a flashing grade, silicone roof patch supplied in a 2 gallon pail and applied in a single pass without reinforcement on a variety of substrates. Use it as a long term solution on penetrations, skylights, seams and holes. For reinforced details, pair it with polyester fabric in the Three Course Installation Method.
Key Features:
- Flashing grade: Flashing grade silicone patch designed for single-application installation without reinforcement.
- Extreme elongation: Superior adhesion and flexibility withstands extreme elongation and is weather resistant.
- UV stable: Highly reflective, UV stable formula withstands direct exposure to sunlight.
- Damp surface ok: May be applied to damp horizontal surfaces; clean surfaces before application.
- Low VOC: VOC/VOS below 50 grams per liter.
- High solids: 99% solids by volume per ASTM D-2369.
- Repair versatility: Trowelable over cracks in concrete, masonry, and wood.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | ASC |
| Manufacturer model | ASCASC911002GASC |
| Sell unit | 1 pail, 2 gal |
| Product type | Silicone flashing grade roof patch |
| Chemistry / base | Silicone |
| Color | White |
| Container size | 2 gallon pail (also packaged in 10/10.5 oz tube) |
| Application method | Roll, brush, or trowel |
| Dry / cure time | Tack-free 1-2 hrs; dry to handle 3-4 hrs; varies with temperature and humidity |
| Solids content | 99% by volume (ASTM D-2369) |
| VOC | <50 g/L |
| Specific gravity | 1.26 |
| Flash point | 141°F |
| Coverage / film thickness | Apply 1/8-1/4 in. (3.2-6.4 mm) per coat in Three Course Installation Method |
| Compatible substrates | Variety of substrates; new and existing roofs; penetrations, skylights, seams, holes; cracks in concrete, masonry, and wood |
| Intended use | Roof repair and maintenance, flashing details |
| Storage | Do not store below 50°F (10°C) or above 120°F (49°C); do not allow to freeze |
| Manufacturer warranty summary | One-year warranty against manufacturing defects; no labor or installation cost coverage |
| Product weight, complete sell unit | 24 lb |
Coverage & How Much You Need:
Coverage depends on film thickness; apply at 1/8-1/4 in. per coat. Additional applications may be necessary as elastic cement shrinks through drying. Estimate per-square needs from the applied thickness for your detail areas.
Fit and Compatibility:
Pairs with ASC polyester fabric in the Three Course Installation Method for reinforced seams and details. Part of the ASC roof coatings and mastics system; for large-area base coats use an ASC acrylic base coat sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in the sell unit?
A: One 2 gallon pail of ASC 911 Silicone Wet Patch in White.
Q: Does it need reinforcement fabric?
A: No, it is designed to be installed in a single application without reinforcement, though polyester fabric can be used in the Three Course Installation Method for detail work.
Q: Can I apply it to damp surfaces?
A: Yes, ASC 911 may be applied to damp horizontal surfaces, but surfaces should be cleaned before application.
Q: How long does it take to cure?
A: Tack-free in 1-2 hours and dry to handle in 3-4 hours, depending on temperature, humidity, and film thickness.
Q: What cleanup is required?
A: Clean tools with soap and warm water.
Q: What substrates does it work on?
A: A variety of substrates on new and existing roofs, and it can be troweled over cracks in concrete, masonry, and wood.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose ASC 911 for flashing details, penetrations, and skylight or seam repairs where a silicone patch must flex with the roof and endure direct sun. Apply in the morning on a warm day to maximize cure time, and avoid application when rain is expected within 24 hours. For three-course details, embed polyester fabric while the first 1/8-1/4 in. coat is still wet, then topcoat immediately. Expect shrinkage through drying, so plan additional applications where needed.
For exterior use only; wear protective clothing and eyewear, ensure adequate ventilation, avoid rain within 24 hours, and never thin or allow the product to freeze.
Order ASC 911 Silicone Wet Patch in the 2 gallon pail for long lasting flashing and roof repairs.
Product Documents:
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