Replacing Modified Bitumen Roof

How to do it.

Replacing modified bitumen roof.

Modified bitumen is a type of asphalt product that can be applied in a number of ways to the roof in both hot and cold temperatures. Bitumen roof advantages and disadvantages. After attaching the felt to the roof use a primer to prepare the roofing. Avoid spending resources on the wrong roofing system for your commercial property and learn the benefits and properties of a modified bitumen roof.

How to install torch down modified bitumen roofing. In fact replacing this modified bitumen roof years earlier may have been a good idea. But since it had only been installed in 2003 the church understandably had wanted to get more life out of it a modified bitumen roof should last much longer than a decade. Understandably there are dangers involved with the installation especially with an inexperienced roof installer.

You may need to remove old flashings. Installed in layers which are either torch welded or adhered using factory applied adhesive modified bitumen can be a cost effective alternative. Make sure the roofing is flat and free from creases and bubbles. A layer of felt is applied to the roof followed by a primer and the strips of bitumen which are sealed onto the roof via the flame of a large torch.

Clean and insulate the roof. Get a sheet of bitumen roofing and roll it out allowing an extension beyond the perimeter of the roof. Step 3 prime the roof. Modified bitumen roofing flat roof replacement what is modified bitumen roofing.

It s necessary to inspect the modified bitumen roof. By knowing its advantages and how modified bitumen roofing systems protect your property or commercial building you can make informed decisions when replacing your existing roofing system. Obviously a patch job needs a clean surface. Remove all obstructions and sweep the roof clean of debris.

Modified bitumen is rolled out onto your roof typically using a blowtorch to secure the modified bitumen to your flat roof. There are new and safer ways to install modified bitumen so make sure to talk with your contractor about other methods of installation. Due to the inherent danger of fire especially around felting. The torch down installation method and a peel and stick installation.

If it s installed properly that is. There are different primers available for sealing the concrete roofs. If moisture damage has occurred any affected insulation or lower level deck material will have to be replaced before the top can be patched. The traditional installation known as torch down application requires installers to heat the materials on the roll as they lay them down on the roof.

One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof.