First let s define what a tar gravel or built up roof bur is.
Tpo vs built up roof.
Tpo compounds have changed in recent years so it is impossible to say how long current roofs will last but a general estimate puts a tpo roof between 10 and 20 years.
Tpo roofing is best known for its durability.
Both solutions work on a little to no slope type of roof.
Tpo roofs are durable.
Two of the commercial flat roof systems commonly found in the northeast are modified bitumen and thermoplastic polyolefin tpo.
The flexibility of the membrane makes it highly resistant to tears punctures and impact damage.
Built up roofing can include up to four plies or more consisting of alternating layers of bitumen asphalt coal tar or other adhesive with a topping aggregate layer of gravel or other materials.
This is due in part to the fact that the top layer of the material is laminated.
This flexibility also allows for a building s movement and setting without compromising the roof s performance.
Note that tpo roofing employs a hot air gun to melt the membrane seams and stick them while epdm uses a seam tape for the purpose.
Resisting dirt bacteria algae and debris build up.
A built up roofing system is installed by alternating layers of bitumen and reinforced fabric.
If needed a base sheet can be fastened to the roof to create a flat and safe work space.
Modified bitumen roofing has been around since the 1970s when it was developed to.
Built up roofing bur better known by their street name of tar gravel roofs bur is just that.
Some commercial and residential roofs use tar gravel or built up roof bur as a roofing solution.
Modified bitumen roof vs tpo.
Each system is designed to waterproof the roof and protect it from sun rain snow and more.
This setup allows the white membrane to stay exposed throughout the roof s lifespan.
It s made up of 3 to 5 laminated layers hot tar and roofing felt.
For over 100 years.
These roof systems are commonly referred to.
This prevent leaks mold and rot all of which can weaken the roofing structure and cause costly damage.
Single ply membrane vs built up roofing infographic.
Dean logan january 4 2018.
Let s look at both solutions.
It s capable of resisting dirt bacteria algae and even debris build up.
Built up roofing systems have been in use in the u s.
Built up roofing the first layer can be adhered directly to the roof substrate.
Pros and cons of built up roofing and single ply roofing system.
Built up roof bur modified bitumen and single ply.
Built up roofs have been in use for over.
Built up roofing can last for more than 40 years if properly installed and maintained well.
