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SMARTCOAT™ 350 Silicone Mastic is a professional grade high performing silicone mastic intended to seal leaking seams, fasteners, penetrations and/or any splits, tears or deficiencies in the roof’s surface prior to coating with SMARTCOAT 450 High Solids Silicone Coating. This product is suitable for application to metal, asphalt, modified bitumen, concrete and most single-ply roofs. Upon cure, SMARTCOAT 350 forms a durable, breathable and water-resistant barrier that is resistant to degradation from UV and natural weathering; coating is not required. SMARTCOAT roof restoration products numbers align with proper application sequence. • 100 Series: Clean • 200 Series: Prime/prepare surfaces only as needed • 300 Series: Seal • 400 Series: Coat Why tear off when you can restore? Restoring a roof and avoiding tear off labor can reduce project costs up to 40%. And since coatings are classified as a maintenance, there are tax advantages for building owners as well. Plus, the...See More

Features & Benefits

Quick Specs
• White • 25 lbs. • Dry Time 2-6 Hours • Approximate coverage 12-13 sq.ft. per gallon applied 1/8" thick; additional material may be required when 3-coursing to saturate and encapsulate polyester fabric • Available in 2G pails
• High elasticity/recovery - accommodates wide swings in temperature and significant building movement • Upon cure, #350 forms a durable, breathable and water-resistant barrier • UV stable, coating is not required
Why Buy
• For use with silicone roof restoration • Experienced contractors may coat #350 immediately after application, taking care not to displace material • #350 has the muscle needed to restore a roof's deficiencies and extend its life
CertainTeed offers SMARTCOAT product and product/workmanship warranties as well as CertainTeed Integrity Roof System Limited Warranty/NDL Limited Warranty SMARTCOAT Extensions, ranging from ten to twenty years for Gold Star Liquid-Applied Commercial Roofing Contractors.

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