Bitumen Roof Sheathing Cover

Roof underlayment test compliance astm d 226.

Bitumen roof sheathing cover.

Apa the engineered wood. A level b roof cover the roof cover must be one of the following accepted roof cover types. Plywood roof sheathing 15 32 inch thick approximate weight. Never attach roof sheathing with staples.

A self adhering polymer modified bitumen roofing underlayment thin rubber sheets with. Applied over all joints in the roof sheathing to. Learn how to resurface a flat roof with modified bitumen also known as rubber roofing. Drive cap nails 6 to 8 inches apart in rows along the top and bottom of the sheets.

Apply extra heavy typically 43 pound roofing felt over the sheathing old roof or the insulation. Standard specification for asphalt saturated organic felt underlayment used in steep slope. Bitumen roof advantages and disadvantages. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

8d ring shank nails should be used instead. Standard specification for asphalt saturated organic felt used in roofing waterproofing csa 123 3. Asphalt shingle roof debris disposal costs to load and haul away old materials installation waste and associated debris. Sheathing membrane breather type paper astm d 4869.

Osb roof sheathing 7 16 inch thick approximate weight. If you install the smooth product cover it with aluminum coating. One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof. Sheathing should be a minimum of 19 32 inch thick.

Sweep area clean of all nails staples. Asphalt saturated organic roofing felt can 2 51 32. Apa the engineered wood association. Perlite board insulation cover board per inch of thickness.

Description sturdy dek is a multi ply semi rigid asphaltic panel composed of a mineral fortified asphaltic core formed between two asphalt saturated fiberglass liners and a plastic separator sheet. Unless otherwise recommended by the sheathing manufacturer cover the sheathing with shingle underlayment felt to minimize exposure to weather. Sturdy dek is designed to be used as a base material in flat or low slope roofing it may be installed over wood concrete rigid insulation or as a recover sheet over an existing roof surface. The typical thickness range for sheathing is 3 8 to 3 4 inch.

Use shingle underlayment felt conforming to astm d226 type i astm d4869 type i or astm d6757 self adhering polymer modified bitumen sheet underlayment should conform to astm d1970 or check roofing.