Tpo Over Existing Roof

There is also a steel railing around the roof with metal stairs leading up to the rear.

Tpo over existing roof. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option a properly installed layover roof can look and function as well. This provides added protection against ice dams. Is it possible to install a tpo roof over a existing asphalt roof. The roof does not leak and the seams are tight and the appurtenances are all sealed tightly.

A recent study of everguard tpo roofs installed between 8 and 16 years ago found they all performed above astm standards for newly manufactured tpo. However installing new flashings including special drip edge flashings made for reroofing will ensure a tight seal and a long life. Is a substrate required for the tpo material. Gaf analyzed membrane samples from roofs across the us and studied thickness over scrim surface cracking and the ability to repair aging tpo membranes.

The asphalt roof covers a two car garage and has a wooden deck on it. According to the 2014 2015 national roofing contractors association nrca market study most new projects in the past few years have specified a white tpo roof. The asphalt is cracked and uneven due to the heat and has a couple leaks in it. Trying to determine if wind caused the loss of adherance or if there was an installation issue.

Some roofers install a layer of waterproof shingle underlayment wsu over the existing shingles at the eave end as would be done for a roof laid on bare sheathing. Starting with the roof membrane we will work down through the system and. I m being told that it won t matter and i don t need to but i ve read some comments that a loose lay of tpo over a granulated roof membrane could do long term damage or create issues. However modern roofing technology now enables tpo roofs to be uv resistant.

If the existing roof is in good enough condition a tpo membrane can be applied over an existing roof system after an insulation board has been applied over an existing built up roof system or other single ply membrane. If so how would the tpo be fastened glued. If the tpo is going to be an overlay on my existing roof do i need to lay a 1 2 insulation fiberboard down. This also allows it to keep cool.

Now you can choose whatever color of tpo you want. In general tpo is a relatively low cost high performing roof membrane when installed the right way. It is important to note that this is not always possible and you may need to remove the existing roof before installing tpo membrane to get the best possible.