Modified Bitumen Roof Restoration

Modified Bitumen Roof Restoration

Project Profile

This 20-year old modified bitumen roof restoration project takes place at a hospital, so you can imagine what impact roof leaks might have on the day-to-day operations of this facility.

The first step was to pressure wash the roof with over 3,000 psi to ensure the roofing coatings would adhere to the aged roofing membrane.

Once surface preparation was completed, flashing details such as seams, penetrations, transitions, and drains were coated with a thick, waterproofing mastic. Some problem areas within the roof surface were reinforced by embedding polyester fabric directly into the mastic.

Next, a gray urethane base coat was then applied to the roof providing the system with unsurpassed strength and durability.

To complete the installation, a white silicone top coat was then applied providing the roof with a highly-reflective, seamless, and water-tight membrane capable of withstanding ponding water.

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