Rolled Mastic Sealant

Why hvac technicians use tapes sealants.

Rolled mastic sealant.

3 32 x 3 4 tape mastic is used for multiple sheet end lapping on roofs with slopes of 2 12 or less. These rolled mastic sealants are code approved and can be used in lieu of or in combination with hardcast liquid sealant line. Over time the connections seams and splits can warp separate or. Aggressive butyl rubber adhesive provides a permanent air and water tight seal.

Hvac ducting is no different. It provides an instant water resistant grip to most surfaces including sheet metal duct board flex duct pvc coated duct and duct wrap vapor barriers. Hardcast rolled mastic duct sealant foils. Foil grip 1402 is a pressure sensitive 40 year cycle duct joint and general purpose rolled mastic sealant.

Rolled sealant is a hardcast duct sealant just like the ds321 the ccw181 and even the 404 solvent based sure grip all of which come in a bucket one gallon of liquid duct sealant has a coverage of about 320 linear feet using a 3 wide application and a rolled mastic is of course 100 ft of coverage. Heat and cold cycles used over throughout the year will cause any material to expand and contract. Nashua foil mastic sealant tape seals and seams low medium and high pressure sheet metal duct systems and ul listed flexible non metallic ducts. The foil grip 1403 181 bfx is listed by ul underwriters laboratory having a ul 181 b fx.

Thicknesses of both products are 17 mils with widths of. Foil grip 1402 is suitable for sub grade application on pvc coated duct and is. Mastic sealants help provide a weatherproof seal and stop water from siphoning between sheets. To read pdf files you need the adobe acrobat reader 6 0 or higher.