How Thick Should A Modified Bitumen Roof Be

Maybe their roof suffered storm damage or they re selling their home or they ve found a leak that s damaging their ceiling. Advantages there are a wide range of methods available for installing modified bitumen roofing from using a hot torch to using a sealant backed peel and stick rolls. The cap sheet is either torched down cold adhered or self adhered modified bitumen can also be applied in hot asphalt.

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How thick should a modified bitumen roof be.

This roof system can withstand heavy foot traffic by work crews snow shoveling and because it has embedded ceramic granules on the surface it will. Then a modified bitumen membrane embedded with ceramic granules is heat fused down to the base completing the 2 ply system. Modified bitumen roofs have a lot of advantages over other types of membrane roofing and are often seen as the modern alternative to the built up roof. Modified bitumen roofing was designed for use on buildings that have a low slope or flat roof.

Class a ballasted 1. There are two main types of modified bitumen sheets. The asphalt and rubber combination makes it durable and holds up to so much more than your standard roofing. The combination of these layers makes the membrane over 3 8 thick.

The material is used for roofs with a low slope or nearly flat. The mem brane is heat fused in place. A base sheet and a cap sheet. If the slope is greater than 4 12 which provides more water drainage from the roof use one layer of 15 felt.

Modified bitumen roofing membranes 55 6 4 u l. Often when a homeowner calls you for a roof repair or replacement time is of the essence. Whatever the reason these time sensitive requests require contractors who can quickly provide a roof proposal and get to work. Dibiten poly 4 5 modified bitumen.

A modified bitumen roof generally consists of two layers. The expected lifespan of a modified bitumen roof often called a modified bit roof is 10 to 15 years in florida. It is a roll roofing that is applied with liquid mastic and has a surface finish of small rock granules similar to a 3 tab shingle roof. If the slope is between 3 12 and 4 12 use two layers of 15 felt for asphalt shingles.

The type and amount of roofing felt to apply varies according to roof slope. The base sheet is often self adhered to the roofing substrate. Modified bitumen is a type of asphalt product that can be applied in a number of ways to the roof in both hot and cold temperatures. The advantages to a modified bitumen roof i have already told you that they have less maintenance and good lifespan but another great advantage is the strength.

Listed specifications single ply membrane systems unless otherwise specified the insulation and base sheet are mechanically fastened to the deck.