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ASC 7 ElastoMagic Roof Cement White 3.5 gal
Regular price $105.00Orders start at $399 — combine any items to reach the minimum. Learn more
ASC 7 ElastoMagic Acrylic Roof Mastic White Elastomeric Cement Sealant 3.5 gal Pail
ASC 7 ElastoMagic is a high-performance white elastic acrylic cement for sealing and patching roof cracks, detail areas and surface imperfections, sold as one 3.5-gallon pail. It adheres and flexes, withstands extreme elongation, and stays highly reflective and UV stable in direct sunlight. Apply in the three-course method and topcoat with ASC 1 White Elastomeric Reflective Coating.
Key Features:
- Seals and patches: Developed to seal cracks, detail areas and surface imperfections on most roof surfaces.
- Extreme elongation: Superior adhesion and flexibility withstand extreme elongation and resist weather.
- UV stable: Designed to be highly reflective and UV stable with direct exposure to sunlight.
- Low VOC: VOC/VOS is 15.6 g/l max (0.13 lbs/gal).
- Water cleanup: Tools and application equipment clean up with soap and warm water.
- New and existing roofs: Ideal for new roofs, existing roofs and general roof maintenance.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | ASC |
| Manufacturer model | ASC7EMCWH |
| Sell unit | 1 pail, 3.5 gal |
| Product type | Acrylic mastic / roof cement |
| Chemistry / base | Water-based acrylic elastomeric cement (acrylic copolymer) |
| Color | White (also available in Standard Gray) |
| Container size | 3.5 gallon pail (also available in 10.5 oz tube) |
| Application method | Paintbrush or trowel (three-course installation); SRS item line lists roll |
| Thickness | 1/8-1/4 in. per coat |
| VOC | 15.6 g/l max (0.13 lbs/gal) |
| Compatible substrates | Most roof surfaces including concrete, masonry and wood; rusted metal should be wire-brushed |
| Intended use | Exterior roof repairs, sealing cracks and detail areas, new and existing roofs and maintenance |
| Manufacturer warranty summary | One year limited warranty against manufacturing defects; no labor or installation coverage |
| Product weight, complete sell unit | 40 lb |
Coverage & How Much You Need:
Coverage depends on the area patched and applied thickness; each coat is applied at 1/8 to 1/4 inch. Additional applications may be necessary because the elastic cement shrinks as it dries.
Fit and Compatibility:
ASC 7 is designed to pair with ASC F Polyester Fabric in the Three Course Installation Method, and for best results can be top-coated with ASC 1 White Elastomeric Reflective Coating. It is for exterior use only and must be applied to a clean, dry surface.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One 3.5-gallon pail of ASC 7 ElastoMagic roof cement in white.
Q: How do I apply it?
A: Apply with a paintbrush or trowel at 1/8 to 1/4 inch thickness, embed polyester fabric into the wet first coat, then immediately apply a second 1/8 to 1/4 inch layer (three-course method).
Q: What surfaces can it be used on?
A: It is ideal for roof repairs on most surfaces, including concrete, masonry and wood; clean rusted metal with a wire brush first.
Q: Is it suitable for exposed roof areas?
A: Yes, ASC 7 is highly reflective and UV stable with direct exposure to sunlight, though it can be top-coated with ASC 1 for best results.
Q: Does it need more than one coat?
A: Yes, the three-course method uses two coats, and additional applications may be necessary because the cement shrinks through drying.
Q: How do I clean up?
A: Clean tools with soap and warm water.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Reach for ASC 7 ElastoMagic when sealing cracks, flashings and detail areas before a reflective coating job; its high elongation bridges movement that rigid patching compounds cannot. Work the polyester fabric into the wet first coat with a brush to remove air pockets and wrinkles, and keep each coat at 1/8 to 1/4 inch. For large-field patching or full recoats, follow with ASC 1 White Elastomeric Reflective Coating. Apply only on a dry roof at warm, rising temperatures and never when rain is expected within 24 hours.
Wear protective clothing and eyewear with adequate ventilation; the product is an eye, skin and respiratory irritant and harmful or fatal if swallowed.
Get ASC 7 ElastoMagic White Roof Cement in the 3.5-gallon pail for flexible, reflective roof repairs that last.
Product Documents:
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