A torch down is a type of material that offers an excellent combination of durability, energy efficiency, and cost savings. Its name comes from the propane torch with an open flame that’s essential for the installation. The sheets are often made from modified bitumen, and heating will make the material adhere more to the surface. See more about a modified bitumen when you click this site.
After the layers have reached the ideal temperatures, waterproofing comes next. This involves melting the seams together so water can’t penetrate the seal. Below are other things to know about this type of roof.
What is a Torch Down Roof?
A torch-on or down roof is installed using heat to melt the adhesive that secures the material to the underlying surface. This type of roofing system is often used on commercial and industrial buildings because it provides a high level of protection against any weather elements.
These kinds are composed of multiple layers of asphalt-saturated felt or fiberglass matting, which are then covered with a layer of fine gravel. The gravelly surface helps protect the asphalt from ultraviolet light and provides durability. The topmost layer of the roof is typically a reflective coating that helps keep the building cooler in the summer months.
Installing a torch down the roof is a job experienced professionals should only attempt while wearing safety shoes such as metatarsal boots. The process begins by cleaning the existing surface and then applying a primer to help the new material adhere to the surface. Once the primer has been applied for the commercial roofing installation, the first layer of felt or fiberglass matting is unrolled and heated with a propane torch until it melts and adheres to the surface. This process is repeated until all layers of felt have been installed, and then the gravel top layer is applied.
Advantages and Disadvantages
One of the main advantages of a torch down roof is its durability. This type of material can withstand heavy snow, wind, and rain without leaking or sustaining damage. Additionally, they are fire resistant and can reflect heat away from the building, helping to keep it cooler in warm weather.
The disadvantages include their high cost and requiring special training and equipment for proper installation. When you don’t get in touch with the right roofers, you might see leaks in the near future.
What are the Components Involved?
Flashing: The flashing can be made up of a self-adhering modified bitumen membrane that penetrates the roof like an HVAC system. This is commonly made of primed metal before the base is affixed for more adherence. Get more info about a flashing on this page: https://www.designingbuildings.co.uk/wiki/Flashing_in_building_construction.
Cap Sheet: This is the top membrane sheet heated as the matting is rolled out. When a few layers are pressed and adhered, they can form a seal, and the entire system is completed at this point. Depending on the owners, another layer of granules can be added for more durability.
Base Sheet: The first layer of the bitumen material is called the base sheet. This is generally secured through hot mopping or direct heat fusing.
Overlay Board: The professionals will lay a cover board supporting the membrane. There should be too much care with this step to prevent the pooling of water.
Tips for the Installation of the Material
- Start by measuring the area you need to cover and then purchase the necessary amount of torch down roofing material.
- Clear the area where you will be working and lay down a tarp to protect the surrounding area from potential damage.
- Once the area is prepped, unroll the matting material and cut it to size using a utility knife.
- Apply a layer of adhesive to the decking and then place the matting on top, pressing it down firmly.
- Use a propane torch to heat up the seams of the sheets in order to seal them.
- Finally, apply a coat of asphalt primer and then top with gravel or another type of aggregate.
A torch down roof is a great option for both residential and commercial buildings, protecting from the elements for years to come. While it can be difficult to install, with the right tools and experience, it can be done relatively quickly and easily. With proper techniques, you can ensure that your torch down roof will remain in good condition for many years to come. If you’re ready to tackle this project on your own or hire an experienced contractor to help you out, especially now that you know exactly what needs to be done.