Shingles are Ineffective on Flat Roofs in Knoxville, TN

Strip old shingles.

Replace rotten deck boards.

Add Back 2” ISO insulation boards.

Add back 60 ML TPO membrane roof over ISO boards. 

This will not only create a new roof, but it will add R 12 insulation over a sunroom.  This will be very valuable for anyone using this space bc it will be more conditioned and comfortable!

Siding will need to be removed and membrane should be installed behind the siding.  New or old siding should be added back to the cover of the roof.

The nails are rusted and rotten.  The shingles were not properly installed either, they were stacked or racked.  

Flat roofs do not typically do well with shingles installed. A flat roof is considered 2/12 or less pitch. There are 2 areas with rotten failing boards, and the edge or eave of the roof has a lot of rot.