Bitumen Flat Roof Construction

Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board.

Bitumen flat roof construction.

At one time built up roofs burs once represented half of all flat roof coverings. One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof. 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. All three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof.

Materials such as layers of fiberglass or polyester are added to the asphalt to add strength to a flat roof. You can use our flat roof calculator to quickly and accurately estimate the cost of replacement. 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 felts are reinforced with either glass fiber mats or organic mats ply sheets and when joined with the bitumen form a durable roofing membrane.

Greencal offers flat roof repair installation services to homeowners in around fullerton ca. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules. If you know you need a commercial roof replacement we re the team to trust. From there the flat roof system you choose will determine the materials you apply.

The hot applied asphalt or coal tar pitch blends with the bitumen soaked roof felt and creates a monolithic roof membrane. Homeowners in the fullerton california area who have flat or slightly sloped roofs on their homes will be glad to know that greencal construction offers roofing services for these types of roofs as well as traditional asphalt shingle and tile roofing. Smucker contracting we have experience with all 4 of the best commercial roofing material types. Modified bitumen and rolled asphalt roofs.

5 50 6 50 per sq. Built up roofs are installed using several layers of a special type of roofing felt that has been asphalt impregnated and embedded in bitumen applied with a hot mop. 4 5 7 per sq. Popular in north america for more than 100 years built up roofing bur systems are composed of alternating layers of bitumen asphalt and fabrics called roofing felts.

Burs consisted of alternative layers of heavy building paper and hot tar. Modified bitumen roofing is a roofing asphalt. Built up roof bur modified bitumen roof mbr and rubber membrane roof epdm. Today modified bitumen mb is king with cap membranes torched on to fuse them to fiberglass reinforced interplies or base coats.

While the lifespan is less than the more advanced options the price point alone can make modified bitumen one of the best flat roof materials for some businesses. Pros and cons for flat roof materials.