Clean existing membrane

The existing roof needs to be clean for the coating to adhere and cure correctly. This is usually done with power washing.

Any wet insulation is removed and replaced

Core samples or an infrared scan will identify wet insulation that’s underneath the membrane.

Damaged areas of the existing membrane are removed and replaced

For example, say there are cracks, cuts, or punctures in a TPO roof. These areas would need to be removed and a new TPO section would be installed.

Adhesion test

Tests will be performed to make sure the coating adheres and cures correctly to your roof’s membrane.


Sometimes a primer is needed to get proper adhesion for the coating.

Seam enhancements/reinforcement

Seam treatment is very important as the seams are areas that break down the fastest on any roofing system.

When a roof expands and contracts, it’s the seams that take the most stress.

To give the seams extra strength, a coat of silicone is applied, then a fibered mesh is installed into the wet coating to all horizontal seams. Some smaller penetrations will receive silicone sealants.

A heavy coat of silicone coating is then installed over the mesh.

Add the proper amount of coating to the rest of the roof

The proper amount of coating is dependent on the desired warranty length.

  • For a 10-year warranty, 20 mils of coating are installed
  • For a 15-year warranty, 25 mils of coating are installed
  • For a 20-year warranty, 30 mils of coating are installed

Superior Seamless Roofing

At Superior Seamless Roofing, we stand behind the very best commercial roofing systems, which is why we recommend ASTEC roofs to our commercial clients. As the only contractors in all of Connecticut authorized to install ASTEC roofing systems, we’re dedicated to equipping the United States with the best in commercial roofing as commercial roofing contractors.

Once you know the kind of roof coating you need for your application, you’ll want to find a brand or manufacturer that supplies quality roof coatings that provide your desired results. Our Expandothane  is another product we recommend produced by Dow Chemical offers high corrosion resistance, hail resistance, excellent physical properties, and waterproofs your roof. Contact the experienced team at Superior Seamless Roofing if you are considering waterproofing your roof. We’ll make honest recommendations that fit your buildings needs.

Author: Stratedia