Modified Roofing Paper

The torch down installation method and a peel and stick installation.

Modified roofing paper.

The numbers ihad a correlation to the weight not the thickness. At one time built up roofs burs once represented half of all flat roof coverings. Cold process modified bitumen roll roofing is another way to apply rolled roofing other than hot mopping or torching. Stick roofing material that installed correctly should last many years.

When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof. The standard types of felt are 15 and the more waterproof 30. Today modified bitumen mb is king with cap membranes torched on to fuse them to fiberglass reinforced interplies or base coats.

These steps show a torch down method which looks a bit scary but actually is not too difficult. Developed in europe in the mid 1960s modified bitumen roofing has been used in canada and the united states since about 1975. Modified bitumen roofing is also very rugged and can sustain a fair amount of foot traffic. Burs consisted of alternative layers of heavy building paper and hot tar.

How to install torch down modified bitumen roofing. As with other types of modified bitumen materials. Synthetic underlayment technically non bitumen synthetic underlayment is the preferred underlayment of most roofing professionals today. It was developed as a means to improve roofing membranes when product quality was affected by the use of a lower quality crude oil by product.

Self adhering modified bitumen roll roofing is designed for flat roofs with a pitch or 4 12 or less typically found over shed type garages and second floor porches. Modified bitumen roofing may have a granular surface as shown here or it may be smooth. There are two main forms of modified bitumen roofing installation. The term cold applied is referring to o.

The type of substrate and the performance objectives influence the specification of the modified bitumen membrane system. The finished roofing membrane may consist of one or more modified bitumen sheets or it may be comprised of a combination of built up roofing bur felts and one or more modified bitumen sheets. If you install the smooth product cover it with aluminum coating. Its main purpose is to prevent moisture from leaking into a roof.