Over Roof Insulation

Get to know more about one of the most popular commercial roofing systems.

Over roof insulation.

It can also be used as a roofing cover board and in building envelope applications. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be. Water is insulation s enemy. Materials appropriate for insulating sheathing with unvented cladding substrate include.

The insulation installed over the roof deck must be installed in multiple layers with joints offset in order to control convective looping at joints between insulation panels. It s light weight provides ease of handling. Roofing products commercial roofing products insulation and cover boards. Learn about insulation and cover boards.

Install rigid foam insulation over the entire surface of the roof. Polyisocyanurate thermal insulation also referred to as polyiso pir or iso is a popular low slope commercial building roof insulation. Use duct tape to seal the seams and further protect against moisture air leaks. Place the sheets close together but don t let them overlap.

Insulation and cover boards. Box out light fixtures. According to the manufacturer s instructions install the metal roofing panels over the insulation. Learn about insulation and cover boards.

Composed of a closed cell polyisocyanurate foam core bonded in the foaming process to 1 2 thick duraboard an expanded perlite mineral aggregate board on one side and a fiber glass reinforced facer on the other. Rigid roof insulation board. It is a thermoset closed cell foam that is an optimal insulation solution for low slope roofs.