Two-layer Flat Roof installation vs Three-layer System.

We’ll also work with you on decisions such as whether to get a two-layer flat roof installation, or a three-layer system.
In both cases, a base sheet and a cap sheet are installed on the roof. There is usually an initial layer of fiberglass, polyester, or other material that serves as the core for torch down roofing membranes.
With the three-layer system, the roof is finished with a granule cap sheet that helps extend the life of the roof, making the three-layer system a more durable and longer-lasting system. We can also provide you with choices in torch down roll roofing that includes small granules embedded into the top of the membrane to add color, ultraviolet protection, fire resistance, or other desired characteristics.
Whichever system you choose, however, our expert flat roof installation will ensure your roofing lasts. A two-layer system usually lasts about 15 years and a three-layer system can last up to 20 years or more.
We ensure that under the roofing we include insulation and a moisture barrier for extra protection from hot, cold and wet conditions. After that, we also install an overlay board that supports the membranes and creates a level roof. This also requires precision on the part of the installer, as an uneven roof can cause water to pool and puddle.
Then, when doing the installation, we stack multiple membranes and “torch them down” to adhere them together and to the roof. Every second layer is modified bitumen, with fiberglass or polyester membranes on the bottom and in the middle.
Here’s an example:
By using the proper torch down technique, we adhere these materials to the flashing, the roof, and any items such as chimneys or other roof features.
There are two common types or modified bitumen used in torch down roofing: Atactic Polypropylene (APP) and Styrene Butadiene Styrene (SBS).
If it sounds confusing, it doesn’t have to be. When you use NYC Torch Down Roofing Pros, we will answer all your questions and provide guidance on the best materials for your flat roof or slightly sloped roof.
And we do more than flat roof installation in NYC. If you’ve got a flat roof that’s damaged, we are also experts at flat roof repair in NYC.
So contact NYC Torch Down Roofing Pros for all your flat roof installation and repair needs.
In both cases, a base sheet and a cap sheet are installed on the roof. There is usually an initial layer of fiberglass, polyester, or other material that serves as the core for torch down roofing membranes.
With the three-layer system, the roof is finished with a granule cap sheet that helps extend the life of the roof, making the three-layer system a more durable and longer-lasting system. We can also provide you with choices in torch down roll roofing that includes small granules embedded into the top of the membrane to add color, ultraviolet protection, fire resistance, or other desired characteristics.
Whichever system you choose, however, our expert flat roof installation will ensure your roofing lasts. A two-layer system usually lasts about 15 years and a three-layer system can last up to 20 years or more.
We ensure that under the roofing we include insulation and a moisture barrier for extra protection from hot, cold and wet conditions. After that, we also install an overlay board that supports the membranes and creates a level roof. This also requires precision on the part of the installer, as an uneven roof can cause water to pool and puddle.
Then, when doing the installation, we stack multiple membranes and “torch them down” to adhere them together and to the roof. Every second layer is modified bitumen, with fiberglass or polyester membranes on the bottom and in the middle.
Here’s an example:
- Insulation, moisture barrier and overlay board are applied.
- Membranes are applied, starting with a fiberglass first layer.
- Add a layer of modified bitumen.
- Add a layer of reinforced polyester.
- Add a second layer of modified bitumen.
- With a three-layer system, the final layer of a granulated mineral surface is added.
By using the proper torch down technique, we adhere these materials to the flashing, the roof, and any items such as chimneys or other roof features.
There are two common types or modified bitumen used in torch down roofing: Atactic Polypropylene (APP) and Styrene Butadiene Styrene (SBS).
If it sounds confusing, it doesn’t have to be. When you use NYC Torch Down Roofing Pros, we will answer all your questions and provide guidance on the best materials for your flat roof or slightly sloped roof.
And we do more than flat roof installation in NYC. If you’ve got a flat roof that’s damaged, we are also experts at flat roof repair in NYC.
So contact NYC Torch Down Roofing Pros for all your flat roof installation and repair needs.