3 Layer Built Up Felt Roofing Details

It is one of the most common materials used on low slope or flat roofs.

3 layer built up felt roofing details. Traditionally domestic flat roofs use two or more built up layers of bituminous felt as their weather proofing. As a system built up roofing bur is a type of asphalt roofing that has been around for more than 100 years. Built up reinforced bitumen torch on applied roofing. The types of roofing methods we use are.

Despite the system s established history bur. Ventsulation felt may be used as a base sheet for any built up roofing or modified bitumen roofing system to be installed over a substrate that potentially contains moisture. Anderson tecnatorch sbs torch on mineral felt capsheet is used as the final layer of the felt roofing process. 3 layer high performance felt systems a flat roof is usually a multi layer construction typically a 3 layer system or single ply.

Learn about the variety of installation methods and roofing system options including bur built up roof sbs and app. Green roofs intensive and extensive. It s available in rolls that are 8m long and 1m wide with a thickness of 4 2mm mineral or 3 8mm sand. Grp roofing has been on the market for a number of years but seems to have become fashionable in recently not only due to the product price falling below the cost of the 3 layer system but more importantly the ease of.

Liquid applied systems such as glass fibre were introduced and are now quite widely used. Offering an upgrade on the old fashioned bitumen and stone chip system of felt roofing the 3 layer felt roof system has changed the way these roofs are laid. Built up reinforced bitumen membrane often named felt. Giving the benefit of longer lasting resistance to uv rays this method of laying flat roofs has a lot of advantages and is sure to be a fine choice for your dormer extension or anywhere else you have a flat roof.

This can be avoided by starting the second layer with a half width roll or if necessary a full width sheet can be cut down to suit after it has been cut to length. Asphaltic roofing solutions 101 asphalt is one of the oldest roofing technologies still in use today and it is a reliable solution for both residential and commercial roofing needs. Promotes moisture vapor venting. It is essential that the joins do not coincide with those of the first layer.

The second layer is another layer of underlay felt but this one is bonded by adhesive to the first nailed layer.