Henry Pro-Grade 957 Silicone Fibered Sealer is a flexible mastic membrane that is reinforced with fibers. This sealant is used to patch and repair cracks, breaks, tears, and holes. Pro-Grade 957 cures quickly and provides immediate waterproofing. Its typical uses include rough areas of SPF roofing, drain bowls, and under and around rooftop-mounted equipment. It can also be used to repair direct-to-metal repairs, smooth built-up, smooth modified bitumen, granulated modified bitumen, aged single-ply roof membrane, flashings, fasteners, and drains. It is recommended to prep the surface prior to application by removing any debris, and contaminants (such as chalk, wax, and grease), and by using a wire brush to rid the surface of any rust and scale. The surface must also be dry and frost free. To apply, work 1/8 to 1/2 inches thick of sealer into cracks or breaks with a trowel or a putty knife.

Features

• Reinforced with fibers
• Excellent repair material for many roofing substrates
• Seals flashings, fasteners, seams, and drains
• Easily applied by trowel up to 1/2 inch thick on vertical or horizontal applications

Specifications

• Size: 2 Gallon Pail
• Color: White
• Application rate: 24 sq. ft. per gallon at 1/16 in. thickness