Single Ply Roofing

In the state of Michigan, single ply roof systems are a great solution to most flat roofing needs.  Keep in mind as you review the three single ply roofing systems that each system can be installed in one of three ways: 

Fully-adhered: The single ply membrane is adhered to the substrate (typically an insulation board) using water-based or solvent-based adhesives.  The insulation board itself is either mechanically fastened or adhered to the roof deck. 

Mechanically-fastened: The single ply membrane is attached by manufacturer-approved  mechanical means (screws and plates) to the substrate or roof deck.

Ballast/loose: The membrane is loose laid over the top of the roof, sealed at all penetrations and around the perimeter, and then ballast holds it in place. Ballast usually consists of smooth, round river rock two to three inches in diameter, and is applied at a rate of approximately 10 pounds per square foot.  On occasion concrete pavers are used in their place; these average around 20 pounds per square foot.

The types of Single Ply Roofing Systems that Weather Shield installs are EPDM (Rubber)PVC and TPO