Roof Waterproofing Membrane

What This Service Involves

Some roofs and decks demand more than a liquid coating, and a fully adhered or reinforced waterproofing membrane provides that heavier-duty defense. We install sheet and fluid membrane systems that lock down every seam and penetration into a continuous barrier rated for constant exposure to water. This level of protection suits Puget Sound structures where prolonged wetting, wind uplift, and the occasional pooling event push ordinary roofing past its limits. Properly detailed at edges and drains, the membrane delivers dependable waterproofing measured in decades.

Benefits

Provides heavy-duty protection against constant moisture exposure; locks seams and penetrations into a continuous barrier; resists wind uplift common on exposed Northwest sites; delivers long-term waterproofing rated in decades

Our Process

1) Prepare and level the substrate for full membrane contact; 2) Install the membrane with fully adhered or reinforced seams; 3) Detail edges, drains, and penetrations to manufacturer spec; 4) Flood test or inspect the finished membrane for integrity

What Affects the Cost

Deck size and the membrane system specified; substrate preparation and any leveling required; complexity of edges, drains, and penetrations; membrane type and its rated service life

Best Time of Year

Install membranes during dry weather so the substrate stays dry and seams bond fully, ideally in the summer or early fall before sustained rain.