Lake Oswego TPO
Roofing
A reflective, heat-welded membrane system for flat and low-slope roofs.
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TPO Roofing Lake Oswego
TPO (thermoplastic polyolefin) has become one of the most widely installed membrane systems for flat and low-slope roofs, and for good reason. Its heat-welded seams fuse into a single continuous surface rather than relying on adhesives alone, its reflective finish helps manage rooftop heat, and it holds up well against UV exposure and the foot traffic that comes with servicing rooftop equipment.
We install and repair TPO roofing for commercial buildings and low-slope residential sections throughout Lake Oswego. For the broader category of low-slope systems, see our flat roof installation page, or talk with our team about whether TPO is the right membrane for your roof. Find out why more building owners are choosing Lake Oswego TPO Roofing for their next reroof.
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Is It Right for You?
When TPO Roofing Makes Sense
You Operate a Commercial or Retail Building with a Flat Roof
TPO is one of the most widely used membrane systems on commercial low-slope roofs, prized for its balance of cost, durability, and installation speed.
You Want a Reflective Roof to Help Offset Summer Heat Gain
TPO's light-colored surface reflects sunlight rather than absorbing it, which can help moderate rooftop and interior temperatures during warmer months.
Your Existing EPDM or Built-Up Roof Is Failing
Aging seams, ponding, or repeated leaks on an older membrane system are common reasons building owners switch to a newer TPO installation.
You Need a Roof Rated for Regular Rooftop Foot Traffic
TPO handles the foot traffic that comes with servicing rooftop HVAC units and other equipment better than many older membrane types.
A Reflective, Reliable Membrane
TPO Roofing Benefits
- Reflective white or light-colored membrane that helps manage rooftop heat
- Heat-welded seams create a strong, continuous waterproof surface
- Lighter weight than some other low-slope roofing systems
- Resistant to UV exposure, punctures, and most chemical exposure
- Well suited to large, open commercial roof areas
- Can sometimes be installed over an existing low-slope roof system
Our TPO Roofing Installation Process
We evaluate the existing roof and building needs to confirm TPO is the right membrane choice, including thickness and attachment method.
Insulation board is installed and fastened or adhered to the deck, providing both thermal performance and a stable base for the membrane.
TPO sheets are rolled out across the roof and seamed together using hot-air welding equipment, fusing adjoining sheets into a single continuous membrane.
Every roof penetration, drain, and edge is flashed and welded according to manufacturer specifications, since these details matter as much as the field membrane itself.
We check seam integrity across the finished roof and walk the completed installation with you before considering the project complete.
TPO Membrane in a Rain-Heavy Climate
A single continuous heat-welded membrane is a real advantage in a climate where a roof spends much of the year wet. Because TPO seams are fused rather than glued, they hold up well against the sustained exposure to rain that low-slope roofs in Lake Oswego see over a typical winter. Drainage design still matters as much with TPO as with any low-slope system — the membrane sheds water effectively, but drains and slope have to move it off the roof to prevent ponding, and seams benefit from periodic inspection to catch any wear before it becomes a leak.
TPO on Commercial and Residential Roofs
TPO is overwhelmingly a commercial roofing material, used on retail buildings, offices, and warehouses with large low-slope roof areas. It's increasingly common on residential projects too, particularly for additions, garages, and other flat sections of a home where a durable, low-maintenance membrane makes more sense than trying to force a steep-slope material onto a low-slope surface. See our commercial roofing page for how TPO fits into a larger building's roofing system.
Considering a TPO Roof?
Get a straightforward estimate on membrane options for your commercial or low-slope roof.
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