How To Do Built Up Felt Roofing

A built up felt roof is an established method of weather proofing roofs normally flat roofs by using more than one layer of bituminous roofing felt which is bonded to the previous layer.

How to do built up felt roofing. Here s a layer by layer explanation. Built up roofing contains three materials. The sequence of laying a felt roof is. Built up roofs or burs also called a tar and gravel roof is a well established and popular style of flat roof that is made up of alternating layers of roofing felt or fiberglass and asphalt that is applied with heat which combine to make a long lasting sturdy roofing system.

As you work the paper can be tacked down in the center so it won t blow away. The built up roof is generally a flat roof or a low pitched roof which is made of a number of levels. Laying the second bonded layer of underlay felt. Thee layers are usually laid with chippings which is layed on top to protect the felt from the sun or a mineral cap sheet is sometimes used instead.

Laying the felt the roofing felt should be applied in layers that overlap. A built up felt roof is made up of multiple layers of cross bonded bituminous roofing felt. Bitumen ply sheets and a surface material such as asphalt or gravel. It consists of an impervious membrane assembled from layers of bituminous saturated felt which are cemented to each other and to the roof deck with bituminous cement usually asphalt or coal.

Crescent roofing has worked on this type of roof for many years and we can use our experience to advise you on the best solution. Laying the first nailed layer of underlay felt. Installing any gutter drips. A built up roof bur sometimes called a tar and gravel roof is a tried and true style of flat roof.

The gravel and tar built up roof is the one most commonly known. A gravel and tar built up roof is exactly that layers of gravel and asphalt laminated felt on top of a flat roof. Start at the bottom of the roofline and work up so any water that gets through the roofing material will shed down the tar paper and will not go under it. Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.