Roof Membrane Under Tiles

Roof underlayment is simply a type of membrane that s installed to your roof for some extra protection.

Roof membrane under tiles.

Cheaper felt paper without an astm rating widely sold in home centers is much thinner and should not be used. This factor alone can rule out many types of underlayment. The industry standard minimum underlayment for a tile roof with a slope of 4 12 or greater is a single layer of astm rated 30 felt paper. They are flexible membranes sold in long roles and.

Let s look at these in more detail. According to bs 5534 the british standard for slating and tiling and bs 5250 the code of practice for the control of condensation there are two main types of roofing underlays. High resistance non breathable underlays and low resistance breathable or vapour permeable membranes. What is the best temperature to install a roof underlayment.

The tiles are lightweight and easy to install but are not designed for heavy furniture. Selecting underlayment for tile roofing the type of primary roof determines the type of underlayment more than any other factor especially in the case of a tile or metal roofing system. An underlayment for use under tiles needs to be rugged enough to support the weight of stacks of tiles. For condos and commercial site you ll want a solid surface rubber tile that is 2 inches or thicker.