Underlayment For Low Slope Metal Roof

Roll self adhered roofing underlayment 225 sq.

Underlayment for low slope metal roof.

Dry fit the roof boot and mark the location of the top of the gasket on the pipe. 15 felt underlayment as shown in figure 2 3above. 15 underlayment as shown. Ft model 5003002.

Gcp applied technologies grace ice and water shield 36 in. Ft coverage sbs modified asphalt polyester self adhered low slope roofing roll in black model lb323235. Asphalt saturated nonperforated organic felts are among the most common underlayments used for metal roof systems. It provides trapped moisture from under the roof in low slope applications a path to drain.

For low slope roofs in cold climates where ice dams and ice dam leaks are likely bliss recommends a double layer of no. Third underlayment layer there is a third product that is sometimes used and specified in new construction. Install the roofing panels and seal between the pipe and panel with a caulking rated for use on metal roofs. Peel and stick is only needed for low slope or if your roof has a issues with ice dams 4a doesn t sound like a climate for that.

Apply a suitable sealant to the underside of the flange of the roof boot and a ring of sealant around the pipe at the height you marked. With slopes from 2 12 to 4 12 use a double layer of no. There are several types of felt underlayment including both organic reinforced and inorganic reinforced. 30 which are reflective of a once used pound per square weight designation.

They commonly are designated as type 15 and type 30 or referred to as no. The traditional and most common material used for roof underlayment on a steep slope metal roof is non perforated asphalt impregnated felt underlayment.