The image above shows part of the process for installing a 2 ply modified bitumen torch down rubber roof system over an existing tar and gravel roof.
2 layer torch down roofing.
When the two layers are pressed together they form a seal.
3 layer torch down roof total average cost per square foot 4 00 4 72 5 55.
The best solution for this existing torch down rubber roof is to install another layer on top of it fusing the 2 layers together.
Advantages of three layer torch down roofing.
I am installing 2 layer torch on roofing on my new plywood carport.
Three layer systems have a base a smooth torch down layer and a torch down layer with a granular surface.
The mat is coated with durable app modified bitumen and is designed for torch down application by professional roofing.
Thanks in advance for any info.
In a two layer torch down roof the system is complete at this point.
My question is can i torch the iko base directly to new plywood.
This membrane contains a core of nonwoven polyester mat that resists splits and tears.
Any leftover debris can prevent the torch down roofing membrane from forming a waterproof seal so make sure you remove it all before working on the roof.
Or do i nail down a layer of something to the new plywood first.
The top membrane sheet to a torch down roofing system is a smooth cap sheet.
Torch on roofing or torch down roofing as it is also known is a flat roof covering solution that involves three layers of modified bitumen felt melt welded onto the roof surface and each other with the use of a blowtorch to create an impenetrable waterproof seal.
Flat roof 2 layer torch down over 1 layer nail applied base sheet first layer torch applied smooth surface second layer torch applied gravel surface installed by california roofing ccl.
Gaf tri ply app smooth is a strong resilient membrane that is suitable for new or reroofing projects as well as for use as flashing.
Cost can add up quickly especially if you re a novice and have never attempted a 3 layer torch down roof installation before.
A three layer torch down roof features the same base and cap sheets as well as an additional cap sheet with a granulated surface.
A two layer torch down roof consists of one base sheet and one smooth cap sheet.
Climb up on a secure ladder with stabilizers that hook onto the roof s edge.
I am using iko tp 180 ff base modified bitumen membrane and the iko torhflex sbs for the final layer.
Stay safe while on the roof.
There are two different types of torch down roofing systems.
Two layer systems tend to last approximately 15 years while three layer torch down roofing can last 20 years or longer.
As it is rolled out the roofing professional will use a torch to heat the bottom of the cap to the top of the base sheet.
I would strongly recommend you hire a licensed and insured roofing contractor to perform the installation for you.
