In May 2025, Stanley Roof and Solar replaced the lower roof on Shereen’s newly purchased home in Central Beaverton, OR. The CertainTeed Presidential designer shingles had failed early because of poor ventilation and old shiplap decking, so we re-sheeted the lower roof with 74 sheets of plywood, fixed the ventilation and installed a complete Malarkey roofing system, leaving the upper roof and its solar panels in place.
Project at a glance
- Location: Central Beaverton, OR
- Completed: May 2025
- Service: roof replacement (lower roof)
- Shingles: Malarkey Vista AR, Antique Brown
- Decking: 74 sheets of new plywood over shiplap
- Ventilation: new ridge vent and solar attic fans
About Central Beaverton, Beaverton
Central Beaverton is one of the city’s officially recognized neighborhoods, with its own Central Beaverton Neighborhood Association Committee, in Washington County, Oregon.
The challenge and how we solved it
The challenge: the home came with a CertainTeed Presidential roof, a designer shingle that normally lasts a long time, but it had started to fail early. The deck was old shiplap boards that had been through several reroofs, and poor attic ventilation was causing moisture problems. Old flashings were rotted and set too close to the valleys.
The solution: to keep costs down, the family replaced only the lower roof and left the upper roof with the solar panels alone. Once the old roof and nails were off, the shiplap cracked and knots fell out, so the crew re-sheeted the lower roof with 74 sheets of plywood. A new ridge vent replaced the old vents, which were blocked off, and permeable underlayment and solar attic fans help the attic dry out.
What we did
- Removed the old lower roof and inspected the shiplap decking.
- Re-sheeted the lower roof with 74 sheets of new plywood after the shiplap cracked during tear-off.
- Installed a new ridge vent and blocked off the old vents.
- Installed Malarkey 1040 Secure Start Permeable underlayment with plastic cap nails, Malarkey 401 Arctic Seal and Smart Start starter shingles.
- Installed Malarkey Vista AR shingles in Antique Brown with EZ-Ridge hip and ridge caps, new flashings, Lifetime Tool pipe flashings and a new bath vent.
- Added solar-powered attic fans.
The finished project
What the homeowner said
Shereen P.
We are so grateful to have found and worked with Stanley Roof. Joe and his team were incredible and helped us understand the complexities of our roof to make an informed decision. We had multiple quotes from other companies and found Joe was honest, reliable, and available when we had questions. Thank you for your service!
Why these materials
Malarkey Vista AR shingles in Antique Brown. Vista AR has the same Class 4 hail impact rating and NEX rubberized asphalt as Vista, plus 3M copper granules that Malarkey says help prevent the black streaks caused by blue-green algae, backed by a 25-year algae warranty. Malarkey lists twice the rain seals of standard shingles and up to 130 mph enhanced wind warranty.
Malarkey 1040 Secure Start Permeable underlayment. Malarkey’s breathable synthetic underlayment. It is designed to keep water from getting into the roof while helping attic moisture escape, which is why it was chosen for a roof with ventilation problems.
Malarkey 401 Arctic Seal. A waterproof, self-adhering underlayment that Malarkey makes for the areas of a roof most likely to leak. Its self-sealing sheet protects against leaks around nails.
Malarkey Smart Start starter shingles. Made with NEX rubberized asphalt, with rubberized adhesive bonds that Malarkey says give extra seal-down and wind protection at the eave and rake edges, where wind usually gets under a roof first.
Malarkey EZ-Ridge hip and ridge shingles. High-profile hip and ridge caps color matched to the field shingles. Malarkey rates them UL Class 4 for impact resistance and adds Scotchgard Protector for algae resistance.
Lifetime Tool pipe flashings and bath vents. Pipe penetrations are one of the most common leak points on a roof, so every plumbing vent got a new pipe flashing and the bathroom fan got a new roof vent.
Plastic cap nails for the underlayment. The underlayment is fastened with Stinger plastic cap nails instead of plain staples. The wide plastic cap holds the sheet flat and seals around the nail, so the deck stays dry if rain arrives before the shingles go on.
New plywood decking. Shiplap boards that have been through several reroofs can crack and lose knots when old nails come out. A new plywood deck gives the shingles a solid, flat surface to nail into.
Ridge vent and solar attic fans. The new ridge vent and solar-powered fans move warm, damp air out of the attic. Poor ventilation was one of the causes of the old roof failing early.
Keeping your roof in good shape
- If you buy a home with an older designer roof, have the attic checked. Poor ventilation helped this Beaverton roof fail years early.
- Watch for moss. Damp, shaded roofs in the Pacific Northwest grow it fast, and moss holds water against the shingles. A roof maintenance visit can treat it before it lifts the shingle edges.
- Clear fir needles and leaves out of the valleys and off the roof after fall windstorms, so rain can run off instead of pooling behind the debris.
- Clean the gutters at least twice a year, in spring and fall, and every 3 to 4 months under heavy tree cover. Clogged gutters overflow onto the fascia and eaves, which is how eave boards rot.
- Look the roof over from the ground after big wind or rain events. The National Weather Service Portland office issues wind and storm warnings for Clark County and the Portland metro, and missing or lifted shingles should be checked before the next storm.
- Keep the attic vents clear. Insulation or stored items blocking the intake vents cuts off the airflow that keeps the attic dry.
Frequently asked questions
Yes, when the sections are separate. On this Central Beaverton home only the lower roof was replaced, and the upper roof with solar panels was left in place to save cost.
On this Beaverton home, poor attic ventilation and old shiplap decking were the main causes, along with workmanship on the original installation.
Not always. This shiplap cracked and lost knots when the old nails came out, so 74 sheets of new plywood went on the lower roof.
Yes. Stanley Roof and Solar is licensed in Oregon and replaced this Central Beaverton roof in May 2025.
Planning a roof project in Beaverton?
Stanley Roof and Solar inspects roofs across Clark County and the Portland metro and tells you honestly whether you need a repair or a replacement. See our Beaverton, OR roofing services, learn about our roof replacement process, browse more Stanley Roof and Solar projects, or get a free estimate.