Step 1: Prep
Roof Preparation: Step 1 of 3 (Foam Roofing Installation)
The roof surface is prepared for the foam roof installation. The foam roofing system does not rely on the old roof membranes for waterproofing. After a thorough preparation, the old membranes do make a good surface for 100% adhesion of the foam. We only remove the old roof membranes when it will improve the job. Leaving the old membrane in place and reusing it as a substrate for the new roof system reduces landfill waste and is good for the environment.
This tar and gravel roof is ready for step 1, roof preparation.
Foam Roofing Systems are Ideal for Re-Roofing Tar & Gravel
The tar and gravel roof above is a good candidate for a foam roof system. Before the foam roof system is applied several steps are taken including the following:
- All loose dirt and gravel is removed and hauled to a recycling facility.
- The tar membrane is secured to the roof deck.
- Deteriorated edge flashing and vent caps are replaced.
- Low areas are determined.
What Substrates and Slope Levels are Ideal for Foam Roofing Systems?
Other types of roof membranes that often make acceptable surfaces for foam roof application include cap sheet, single ply, and torch-down roof systems. A foam roof can be installed almost regardless of the base material, however, non-ideal surfaces may require additional preparatory work. Most foam roofs are install on flat or low slope roofs, although sometimes you'll see foam roofs on sharply sloped designs. A foam roof system can be installed on any roof, regardless of the slope level, although due to aesthetics, foam roofs are most popular on flat and low slope roofs.
