House Wrap Under Metal Roof

The traditional and most common material used for roof underlayment on a steep slope metal roof is non perforated asphalt impregnated felt underlayment.

House wrap under metal roof. Traditionally metal roofs have used standard 30 pound felt paper underlayment. Foil insulation is a radiant barrier and it works by. More recently the term house wrap is usually used to describe plastic fabric wrbs such as tyvek. Once again this is used on cold roof construction.

There are several types of felt underlayment including both organic reinforced and inorganic reinforced. Make sure the product is designed to be used under metal. It serves as a moisture barrier as well as a slip sheet. It is literally wrapped around a building cut out around windows and doors and taped at the seams.

House wrap types. The original wrb was asphalt impregnated felt paper or tar paper the same material commonly used as an underlayment under roof shingles. Proper installation under each façade is essential to ensure tyvek provides the maximum level of air infiltration resistance and bulk water holdout. House wrap behind a building s siding is an excellent secondary defense against the weather.

Underlayment must also act as a secondary weather barrier in case the roof fails. The best underlayment for metal roofs. Each layer is composed of polyethylene bubbles that function as an additional thermal barrier that helps stop condensation. House wrap is a weatherization membrane which provides a protective layer under a building s siding and over the wall girts or sheathing.

Can tyvek be used on roofs. We recommend a polypropylene scrim reinforced underlayment made up of multiple layers. The first goal of roofing underlayment is to keep the roof deck dry before installation of the metal roofing material. Foil insulation underlayment is recommended under a metal roof and in most cases the shiny side should be facing up but there s a catch.