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Flat/Low-Sloped Roofing

Flat Roof with PVC in Redmond

Greater Seattle’s Flat & Low-Sloped Roof Specialists

Premium, Long-Lasting PVC And TPO Solutions For Residential Homes.


Do you own the rare home in Greater Seattle with a flat or low-sloped roof? You’ve found THE perfect company to handle your roof replacement job.

At RoofSmart, we offer several flat and low-slope roofing solutions, including PVC, TPO, and Duradek™ waterproof deck roofing. These solutions are durable, flexible, long-lasting membranes. They have highly reflective surfaces to help keep excess solar heat out of your home. And they’re ultra-durable, providing decades of leakproof performance.


PVC (Polyvinyl Chloride) RoofingTPO (Thermoplastic Polyolefin) Roofing 

Walkable Membrane RoofingRooftop DecksOther Types Of Roofing Materials More Roofing Info


Installing A Flat Roof Requires BRAINPOWER

Flat and low-slope roof replacement is especially challenging. In terms of installation, it’s a totally different animal than composition shingle and metal roof installation.

As a result, it’s easily the type of roof installation that contractors mess up most often.

Why? Because water sheds slowly from flat and low-slope roofing. If your contractor doesn’t design the roof properly, water WILL build up and flow under the roof. As you can imagine, this creates all kinds of problems: mold, rot, decay… all the “fun” stuff.

As Greater Seattle’s smart roofer, we love “solving the puzzle” of flat and low-slope roofing. We specialize in impeccably designed, 100% waterproof PVC and TPO roofing that lasts.


Duro Last Pvc Roof Seattle

PVC Roofing

Polyvinyl chloride (PVC) roofing is a single-ply membrane. PVC roofing is ultra-durable and resistant to fire, chemicals, high-speed winds, and basically anything you can throw at it.

PVC roofing is low maintenance and can easily last you decades. It’s also an energy-efficient material that can reduce your energy costs and lower your carbon footprint. In other words, PVC roofing is the total package: premier performance, excellent efficiency, long lifespan, and exceptional curb appeal.

PVC Roofing Benefits:

  • Unrivaled flexibility makes it one of the best solutions for low-slope and flat roofs
  • Resists… well, everything: chemicals, fire, wind, water, mold, punctures, tears, and more
  • Critical for roofs with cooking oils, like restaurants
  • Hot-air-welded seams create a watertight bond and make PVC three times stronger than rubber roofing solutions
  • Can easily last decades with little to no maintenance
  • Reinforced scrim with polypropylene dipped fiberglass fibers, so the scrim is non wicking. No cut-edge sealant required!
  • UV resistance makes PVC highly efficient and reduces your home’s energy usage

Tpo Flat And Low Slope Roofing Greater Seattle Roofsmart

TPO Roofing

TPO stands for thermoplastic polyolefin. It’s a single-ply roofing membrane that provides high-end performance for a reasonable price. It’s a newer flat-roofing technology that was introduced in the 1990s that (unlike PVC roofing) doesn’t use plasticizers in its formulation. As a newer idea, the manufacturers are still evolving their formulations, so it’s cheaper and a little bit experimental.

TPO roofing resists heat, ultra-violet rays, fungus buildup, and weathering. While not quite as flexible as PVC, TPO is still exceptionally pliable, making it an excellent solution for low-slope and flat roofing.

TPO Roofing Benefits:

  • Outstanding durability—resists tearing, puncturing, mold, weathering, and much more
  • UV-resistant properties that exceed ENERGY STAR® requirements and help cool your home
  • Hot-air-welded seams make it three times stronger than conventional rubber roofing
  • Easily lasts decades with little to no maintenance
  • Always needs cut-edge sealant
  • Detail elements are all field-fabricated and not reinforced (this is a negative)
  • Lower cost than PVC roofing

Duradek Designer Rustic Plank Vinyl Roofing Greater Seattle

Duradek textured PVC membrane for walkable rooftop deck or patio cover

Walkable Rooftop Deck

Have a walkout roof deck or patio? Our walkable membrane roofing is a truly special solution that provides incredible performance and looks amazing.

This stuff is a special waterproof vinyl membrane that authentically replicates stylish roof deck materials such as wood planks, marble, stone, and poured concrete. It’s the perfect material if you want a roof deck with a stunning appearance that requires minimal maintenance. It’s got a “tread” surface texture so it’s more slip and wear resistant than a typical roof surface. A perfect fit to waterproof  your deck.

Walkable Roofing Benefits:

  • Sealed with a hydrophobic PVC top finish to shed water and make cleaning easier
  • Cool-Step technology keeps your walkable roof up to 50% cooler than the average deck surface during hot days
  • Resists degradation in temperatures ranging from -40°F to 365°F
  • UV and mold inhibitors extend the roof’s lifespan
  • Comes in a variety of beautiful styles and colors

Ipe Rooftop Deck (Seattle)

Rooftop Deck over TPO/PVC

Rooftop Deck with IPE (Ironwood)

Rooftop Deck with Roofing Benefits:

  • IPE is so dense, you can’t stain it like other wood
  • Incredibly durable. No worries about damaging it. And it protects the roof underneath!
  • Easily repaired if a meteor strikes it (or tree branch)
  • The TPO or PVC roof membrane underneath is protected from the sun, and can be angled for good drainage. The leveling system we use for the tiles keeps the deck level.
  • Looks stunning. Some of the best looking jobs we do!

Other Types Of Roofing Materials

In addition to low-slope and flat roofing, we also offer the following types of roof installation for Greater Seattle

  • Composition Shingle Roofing: Owens Corning. CertainTeed. GAF. Whatever premium brand you need, we install it.
  • Metal Roofing: We offer custom, lifetime-lasting metal roofs in standing seam, shake, slate, and copper styles.
  • Specialty Roofing: From walkable roofing to wood roofing, we’re experts in a wide variety of specialty roofing styles.

More Roofing Info

  • Metal Roofing Gallery: Explore photos of metal roof installations we’ve completed throughout Greater Seattle.
  • SmartSeries Case Studies: Read real-life stories of how we’ve solved homeowners’ roofing issues that other companies didn’t.
  • Financing: Investing in a metal roof doesn’t have to “break the bank.” Our financing can secure you comfortable monthly payments.
  • Why Us: We’re not your average roofer—we’re Greater Seattle’s passionate, detail-obsessed roofing nerds. See how this translates into top quality for YOU.