TPO Roofing

What This Service Involves

TPO has become a workhorse on Puget Sound commercial and modern residential flat roofs because its heat-welded seams form a continuous watertight sheet with no adhesives to fail. Our technicians use calibrated robotic and hand welders, then probe every seam to confirm a full bond rather than a cosmetic one. The bright white surface reflects what sunlight we do get and resists the algae staining that plagues darker roofs in our damp shade. We pair the membrane with proper tapered insulation so water moves to the drains instead of pooling in the flat spots that our gentle roof pitches tend to create.

Benefits

Heat-welded seams create a monolithic barrier against constant rain; Reflective surface resists heat gain and Northwest algae growth; Probe-tested welds verify watertightness before we leave; Flexible sheet handles seasonal expansion without cracking; Recyclable membrane appeals to sustainability-focused owners

Our Process

1) Tear off or prepare the substrate and install cover board; 2) Lay tapered insulation to establish drainage toward outlets; 3) Fasten or adhere the TPO sheet per the manufacturer spec; 4) Hot-air weld all seams, flash penetrations, and probe-test every joint

What Affects the Cost

Membrane thickness chosen, typically 60 or 80 mil for longevity; Square footage and layout complexity of the roof; Attachment method, whether mechanically fastened or fully adhered; Number of curbs, drains, and pipe penetrations to weld around; Condition of the deck and insulation being covered

Best Time of Year

Dry, mild days from June through September let the welds and any adhesives set correctly, so we book membrane work for the summer window.