0.4mm Asphalt Shingle Roll Heavy - Duty Paper For Roof Construction

0.4mm ASTM Asphalt Roofing Felt Roll Roofing Felt ASTM D226 / D4869

Asphalt roofing felt is a heavy-duty paper used in construction, Asphalt roofing felt is made by impregnating paper  or fiberglass mat with tar, producing a waterproof material useful for roof construction. 

Physical Requirements

Used

A roofing felt used as an underlay asphalt shingles, wood shakes, damp proof,tiles and otherslopedcoverings.Saturated organic felts require protection form damage and the weather. store rolls upright in a dry location and never install when wet or over a wet roof deck.

Characteristics

• suitable for slope roof and wooden roof as underlayment
• Most economical roofing underlayment (because of low price)
• Heavy duty design lays flat to minimize wrinkling
• high visible guide lines to apply shingles
• Slip resistant for safety in warmer climates

Application instructions:

1.The first layer of Felt rolls must be installed to cover the entire bottom edge of the roof deck to facilitate the water shedding ability of the Felt.

2.Install fasteners at least eight inches at the top and middle edges and at the eave along the deck

3. At slopes 4:12 and greater, a single layer of Felt rolls shall be installed parallel to and starting at the eaves, over lapped at least two inches, and fastened sufficiently to hold in place

4.Continue to install the next course of Felt from the roof edge and overlap with the previous course as described above, according to the roof slope. If a new roll is required to complete the installation to the end of the roof, overlap the new roll over the prior roll by at least four inches. Use the same fastening pattern for the top, the middle and the bottom of the roll for all subsequent courses