Modified Bitumen

Typically used on commercial buildings, the modified bitumen reinforced roof membrane system exhibits plastic characteristics. It is composed of composite sheets of roofing materials that are manufactured with modified bitumen and reinforcing sheets. Some reinforcement is normally located at the sheet’s mid-depth. This reinforcement may be in the form of:

  • Plastic sheeting
  • Polyethylene film
  • Heavy polyester mat
  • Glass fiber felt or fabric
  • Combinations

The modified asphalt for these systems contain polymers or special plasticizer, depending on the manufacturer.

True Engelmeier Roofing will tear off existing roof system down to roof deck then rebuild from the deck up. We install the modified single ply roofing over a 43# base sheet. Membrane is applied with a modified adhesive. This roof system would include all necessary flashings.