Roofing Felt As House Wrap

Traditionally metal roofs have used standard 30 pound felt paper underlayment.

Roofing felt as house wrap.

The first goal of roofing underlayment is to keep the roof deck dry before installation of the metal roofing material. Then install vertical nailers over the wrapped sheathing and attach the panels to the nailers which will create an air space between the panels and the wall sheathing. The use of roofing felt or 15 pound felt as a building house wrap or vapor barrier and the permeability moisture problems and indoor condensation problems that may occur vapor barriers and condensation in buildings. Position the successive panels.

Drive staples and trim. Here s what an expert had to say. If you will be attaching. The main purpose of the sheathing wrap whether building felt or plastic housewrap is to prevent water leakage into the building structure.

House wrap and felt paper when properly installed and undamaged are both weather resistant barriers wrb that create permeable and water and air resistant exterior walls. After stripping the original siding from a 30 year old house and preparing to install fiber cement panels a contractor wonders if he can use a waterproof synthetic roofing underlayment instead of housewrap behind the panels. When and why condensation occurs inside buildings explains the problems caused by excessive indoor condensation explains how moisture enters building wall and ceiling cavities and summarizes the best approaches to prevention of indoor moisture and condensation problems. Asphalt felt tar paper the standard requirement is type 1 felt meeting astm d 226 standards.

Underlayment must also act as a secondary weather barrier in case the roof fails. Explain what is wrong with using roofing felt under siding. Drive plenty of staples especially if it is windy in your area. Substituting synthetic roof underlayments for housewrap.

The main advantage of house wrap over felt paper is the superior strength and durability of house wrap. How to do it install bottom piece. The original wrb was asphalt impregnated felt paper or tar paper the same material commonly used as an underlayment under roof shingles. A high quality house wrap like barricade building wrap is more resistant to ripping and tearing during installation than felt paper.

Working with a helper install the bottom piece of felt so it extends 1 or 2 inches below the sill. No you should not use roofing felt as a house wrap for siding but you can use gaf underlayment call deck armor for wrapping the exterior of a home before siding is installed. More recently the term house wrap is usually used to describe plastic fabric wrbs such as tyvek.