Modified Roofing Paper

Cold process modified bitumen roll roofing is another way to apply rolled roofing other than hot mopping or torching.

Modified roofing paper.

Stick roofing material that installed correctly should last many years. Burs consisted of alternative layers of heavy building paper and hot tar. Felt paper is applied across the entire roof deck. Synthetic underlayment technically non bitumen synthetic underlayment is the preferred underlayment of most roofing professionals today.

If you install the smooth product cover it with aluminum coating. Developed in europe in the mid 1960s modified bitumen roofing has been used in canada and the united states since about 1975. Today modified bitumen mb is king with cap membranes torched on to fuse them to fiberglass reinforced interplies or base coats. The standard types of felt are 15 and the more waterproof 30.

The numbers ihad a correlation to the weight not the thickness. 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.

Roofing felt also called roofing felt paper is underlayed on roofs before shingles are added. The term cold applied is referring to o. The torch down installation method and a peel and stick installation. Depending on local weather waterproof underlayment may be recommended.

Modified bitumen roofing is also very rugged and can sustain a fair amount of foot traffic. As with other types of modified bitumen materials. 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. Its main purpose is to prevent moisture from leaking into a roof.

At one time built up roofs burs once represented half of all flat roof coverings. How to install torch down modified bitumen roofing. There are two main forms of modified bitumen roofing installation. The type of substrate and the performance objectives influence the specification of the modified bitumen membrane system.