Stretch-Guard® Elastomeric Waterproofing Underseal
A Stretch-Guard® Product for Commercial & Residential Use.
Stretch Further. Seal Stronger. Protect Longer.
Seal. Shield. Stretch.
Introducing Stretch-Guard 8875 Underseal, a high-performance, 100% acrylic elastomeric coating that stretches up to 400%, ensuring your roof, walls, and surfaces remain protected under any condition. The Stretch-Guard 8875 Underseal delivers unmatched flexibility and durability, forming a seamless, ponding water-resistant membrane that adapts to extreme temperature changes — the ultimate solution for waterproofing and sealing flat, low-slope, and metal roofs.
Whether you’re battling cracks, ponding water, UV rays, or temperature extremes, 8875 forms a durable, seamless membrane — ready to safeguard your investment. Eco-friendly, easy to apply, and built to last.
- RESOURCES
Criteria | 8875 Stretch-Guard Underseal |
|---|---|
Packaging: | Available In 1 Quart Can, 1 Gallon Can and 5 Gallon Pails |
Colors: | Black |
Coverage: | Waterproofing warranties require a minimum underseal thickness over a properly patched surface. This mil thickness can be achieved by applying 1 coat at the rate if one gallon per 50 square feet or 2 coats at one gallon per 100 square feet. Badly weathered roofs may require additional coats of underseal to provide a uniform surface for the top coat |
VOC | <50 grams per liter |
Dry to Touch: | 1 hour. Cool or humid weather conditions will slow the drying time. |
Re-Coat: | 2-4 hours |
Frequently Asked Questions about Stretch-Guard 8875 Underseal
A: Its 400% elongation allows it to flex with your roof as temperatures change, preventing cracks and leaks. Plus, it's ponding water resistant — a critical feature for flat roofs.
A: Absolutely. 8875 works on metal, concrete, low slope/flat roofs, and more — with proper surface prep as outlined.
A: Yes, it’s low VOC, water-based, and safe for the environment — plus, easy to clean up with water.
: Touch dry in 60 minutes, recoatable in 2-4 hours.
A: It comes in Black, providing excellent UV resistance and heat absorption.
A: Yes, but it’s also specified as part of broader roof systems and warranty-backed applications.
- Uses
- Applications
- Plywood Roofs & Decks
- Composition Roofs
- Asphalt Shingles
- Metal Roofs
- Concrete Roofs
- Flat Roofs
- Flower Pots
- Masonry Block Walls
- Rolled Roofs
- Poly Foam Roofs
- Mobile Home Roofs
- Advantages
- Advantages
- 400% Elongation - — Adapts with expanding/contracting surfaces.
- Resistant to Ponding Water — Ideal for flat/low-slope roofs.
- UV & Crack Resistant — Long-term durability in harsh climates.
- Low VOC & Water-Based — Eco-friendly, easy cleanup.
- Flexible in Low Temps — Won’t crack even in cold conditions.
- Primes & Seals in One Step — Save time and labor.
- Versatile Use — Suitable for roofs, shower pans, planter boxes, walls, and more.
- Warranty Ready — Meets specifications for 5, 10, or 15-year roof warranties.
- Packaging
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