Gravel is an excellent fire.
Gravel on top of tpo of roof.
Once made of tar paper these types of roofs gradually are using more advanced materials such as fiberglass membranes.
Their current built up roof or tar and gravel roof had sustained water damage.
Heat welded seams provide superior strength.
On top of this was spread roofing tar and then about 7 tons of gravel as ballast.
Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope.
All other roofing systems as in epdm rubber or tpo vinyl have to have a fiberboard base to protect against punctures.
Water damaged tar gravel roof.
Tpo roofing systems 101.
This means that a tpo roof is as uv resistant and as heat resistant as epdm and as heat weldable.
A layer of gravel or small stones is applied on top of the final coating of asphalt to protect the roof from the elements including ultraviolet uv rays and hail.
Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price.
Pea gravel crushed rock and decorative rock white quartz are often dispersed into a flood coat of hot asphalt and applied over the top of the roof membrane.
We live in the mid atlantic region outside of washington dc.
Tpo is touted to have the benefits of two of its direct competitors epdm and pvc roofs but without the drawbacks and extra costs.
Gaf tpo roofing membranes include.
This acts as an adhesive when it cools.
Some commercial single ply roofs are ballasted with gravel this report does not apply to these gravel roof advantages.
We stripped out the water damaged materials of the old tar and gravel roof and installed a tough waterproof tpo roof thermoplastic polyolefin.
Rain was pooling in areas resulting in leaks rotted wood and damaged insulation.
Rubber roof installation over a gravel roof video showing how we do it.
The roof is 21 years old and we have experienced a slow leak that has caused damage and so we are trying to decide between repair and replacement.
The gravel is embedded into the top coat of asphalt known as a flood coat which helps the gravel stay in place.
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.
There are two main types of burs or tar and gravel roofing systems modified bitumen roofs which are a mix of asphalt and rubber with a layer of gravel on top and ballast roofing which is a different style of larger gravel applied on top of a single ply roofing system.
Every modified bitumen torch down roof comes with a 40 year warranty.
