Although tpo is a vinyl type of material we will also include it as part of this article.
Flat roof torch on membranes.
Built up roof bur the traditional hot tar and gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone.
Once a single ply torch down is coupled with a second layer modified bitumen membrane it becomes a two ply system that surpasses the quality and standards of all other roofing systems.
However their popularity does not mean it s the best type of roofing membrane but rather the easiest to install requiring very few hand.
Modified bitumen torch down roofing.
Attractive for windows and decks that overlook the roof.
Heat sealed seams and ultra waterproof membranes make torch down roofing one of the most highly water resistant flat roof systems.
When installed correctly by a roofing professional torch on roofing prevents water from collecting and pooling on the roof and promotes drainage.
In residential it is used predominantly for large apartment buildings garage roofs and small extensions.
There are also self adhesive versions of modified bitumen that install in a peel and stick fashion.
Take into account that flat roofs often require the application of a layer of insulation adhesives or hot air welding and some types such as modified bitumen are installed with a torch that heats up the seal.
It is also increasingly used for larger main roofs in single family housing with modern designs that integrate flat roofs.
It s the cheapest of the four roof varieties.
The conventional method of installation called torch down involves heating the backside of the roofing as it is unrolled essentially melting the material to the base layer.
The peel and stick method is available as a do it yourself option.
Modified bitumen vs pvc membranes flat roofs a traditional torch on flat roof is not a desirable surface for a functional flat roof deck.
Epdm rubber membrane roofs are the most popular of all the membranes.
Flat roof membranes are used in both residential and commercial roofing projects.
Provided the membrane and insulation are installed according to manufacturer application instructions the flat surface of a torch down roof prevents water from collecting and allows it to drain off.
Membrane roofs are attached in a variety of ways.
Modified bitumentorch down is by far the most durable roofing material.
The sheets are rolled onto the roof atop a base sheet membrane.
They can be partially loose laid and held down with river rock ballast requires roof structure to support the weight or fully adhered to the roof deck.
The modified bitumen option is a single ply rolled roof available in traditional torch down systems and newer peel and stick systems.
The materials on flat roofs are mostly rubber.
Every roofing system has its pro s and cons and techniques of installation.
Epdm and neoprene roof seams are fastened by adhesive and pvc roof seams are heat or solvent welded.
Gravel is an excellent fire retardant.
These materials are classified as single ply roofing membranes.
