Home › Recent Projects › Roof Replacement in Renton, WA (Landmark, Black Walnut)
Squatch Roofing replaced the roof on a home in Renton, WA 98059 in June 2026, stripping a worn three-tab shingle roof to the deck, replacing water-stained sections of the sheathing with new plywood, rebuilding a run of rafter tails at one eave, and installing CertainTeed Landmark shingles in Black Walnut over CertainTeed RoofRunner underlayment. The estimate also added six box vents and upgraded every vent from plastic to metal at no charge. The roof was inspected May 26, 2026, torn off June 25, finished June 26, and the job closed July 1, 2026.
| Location | Renton, WA 98059 |
|---|---|
| Service | Full roof replacement with partial decking replacement and rafter tail repair |
| Property | Home with a multi-hip roof, several valleys, and lower slopes running into two-story sidewalls |
| Inspection | May 26, 2026: attic photos plus a drone walk of every slope, 25 photos on file |
| Existing roof | Three-tab asphalt shingles with widespread granule loss and uneven, blotchy colour across the field, moss along the course lines, three plastic box vents, and aged pipe flashings |
| Decking | Oriented strand board. A dark water-stained band ran down one valley to the eave; those sections were cut out and replaced with new plywood. The job file records a decking replacement line but not a sheet count |
| Carpentry | Rafter tails replaced at one eave; the overhang was opened to the framing and re-sheeted |
| New shingle | CertainTeed Landmark laminate asphalt shingle; the job file lists the color as Black Walnut |
| Underlayment | CertainTeed RoofRunner synthetic underlayment across the field, with a self-adhered membrane laid in the valleys and along the eaves first |
| Ventilation | Six box vents added beyond what the roof had, and the vents upgraded from plastic to metal, carried on the estimate as a no-charge upgrade |
| Flashing | New pipe flashings with storm collars, new apron flashing where the roof meets the two-story siding, new metal drip edge |
| Schedule | Tear-off, decking, carpentry and dry-in June 25; shingles, vents, flashing and completion photos June 26; job closed July 1, 2026 |
| Project investment range | $18,700 to $29,400 |
| Warranty | Squatch 15-Year Leak-Free Guarantee on workmanship, plus the CertainTeed materials warranty for Landmark |
What Squatch Found on the Inspection
The 21-point inspection ran May 26, 2026. It started in the attic, where the photos show the underside of the sheathing and the framing, then moved to a drone pass over every slope. What the drone photos show is wear spread across the whole roof rather than concentrated at any one place on it.
- Granule loss: pale, blotchy areas across the field where the granule surface had thinned, on every slope the drone photographed rather than in one spot.
- Moss: a green line of moss growing along the horizontal course joints, visible in the close-up photos of several slopes.
- Uneven weathering: the overhead photo shows the colour running in lighter and darker bands across the slopes rather than as one even field, which is what an asphalt roof looks like late in its life.
- Ventilation: plastic box vents, a black plastic pipe boot, and a metal flue. The plastic vents were the only exhaust on the elevation photographed.
Why We Recommended Replacement Rather Than Another Repair
Squatch is not against repairs. On this roof the case for one had already been used up. Granules are the part of a shingle that cannot be put back. They are the shingle’s weather layer, and manufacturers treat granule loss as an end-of-life condition rather than something to patch. That is a field-wide condition, not a spot condition. A repair fixes a place; it does nothing about a surface that is thinning everywhere at the same rate, which is what the drone photos show on every slope of this roof.
The estimate was written as a full replacement with a decking replacement line included rather than left as a surprise, which turned out to be the right call once the shingles came off. It also carried two ventilation items: six box vents added beyond the existing count, and an upgrade from plastic vents to metal at no charge.
What the Tear-Off Uncovered
Tear-off ran June 25. With the shingles off, the oriented strand board deck told the rest of the story: a dark stained band ran the length of one valley and widened toward the eave, which is what a valley that has been shedding water into the deck rather than off it looks like from above. Those sections were cut out and replaced with new plywood, which reads lighter than the original board in every photo from that afternoon.
At one eave the crew opened the overhang down to the framing to replace the rafter tails. The photos from midday show the roof edge cut back to bare rafter tails with the attic insulation and a soffit screen visible through the opening, then new sheathing closing it back up the same day.
What We Installed
- Decking: new plywood in the stained valley sections and over the rebuilt eave; the rest of the original deck was sound and stayed.
- Dry-in: a self-adhered membrane laid in the valleys and along the eaves first, then CertainTeed RoofRunner synthetic underlayment across the field.
- Shingle: CertainTeed Landmark, a laminate (architectural) asphalt shingle. The job file lists the color as Black Walnut; in the completion photos it reads as a warm brown blend.
- Ventilation: metal box vents in place of the plastic ones, with six added beyond the roof’s original count.
- Flashing: new pipe flashings with storm collars, new apron flashing along the wall where the lower roof meets the two-story siding, and new metal drip edge.
Squatch Roofing is a CertainTeed ShingleMaster Premier contractor and installs CertainTeed systems only.
How the Project Went, Day by Day
June 25: the crew posted overhead-work signage at the driveway, ran a signed construction safety checklist before starting, and staged the dump trailer. Tear-off took the morning. By midday the deck was bare, the stained valley sections were marked, and the eave was open to the rafter tails. New plywood went down through the afternoon, the eave was re-sheeted, and the self-adhered membrane and RoofRunner underlayment covered the roof before the crew left, so the house was dried in overnight. June 26: a second signed safety checklist, then the shingle courses went on from the eaves up. The metal box vents, pipe flashings and storm collars, apron flashing at the siding, and drip edge followed, and the crew photographed the finished slopes and the vent flanges tucked under the shingle courses. The job closed out July 1, 2026.
The Finished Roof
The patched three-tab field is gone. The home has a Landmark roof in Black Walnut over RoofRunner underlayment, with the stained valley sections replaced, the eave carpentry rebuilt, and metal vents where the plastic ones were. The completion photos show the vent flanges slid under the shingle course above them, storm collars on the plumbing stacks, and a continuous line of new apron flashing where the lower roof meets the two-story wall. The drone photos from June 26 show the same slopes photographed on the inspection, now reading as one even field instead of the banded, blotchy surface they started as.
What This Roof Replacement Cost
Project investment range: $18,700 to $29,400. This range reflects the scope of this completed project and is not a current quote. It is anchored on the final invoice total, which includes Washington sales tax.
Three things carried this price above a plain tear-off and re-cover. The decking replacement in the stained valley added material and time that a roof with a clean deck would not need. The rafter tail replacement was carpentry, not roofing: the eave had to be opened, rebuilt, and re-sheeted before any underlayment could go down. And the ventilation was expanded rather than reused, with six box vents added. The roof form itself, a hip roof with several valleys and two sidewall runs, is more cutting and more flashing than a simple gable of the same square footage.
What Homeowners With Similar Roofs Should Know
Granule loss everywhere is a different problem from a leak somewhere. On this roof the thinning was on every slope the drone photographed, not at one penetration or one valley. That distinction is the one that decides repair against replacement, and it is visible in close-up photos of the shingle surface. Ask for those, not just a photo of the whole roof.
A stained valley on the deck is only visible for one hour of the whole project. Nothing in the drone photos predicted the stained band that showed up under this valley. The only time anybody sees the deck is between tear-off and dry-in, which is why the estimate carried a decking line up front rather than pricing it as a change order on the roof.
Ask what the vents are made of. The plastic box vents on this roof were the original exhaust. The estimate replaced them with metal and carried the upgrade as a no-charge line. If a quote does not say what material the vents are, it is worth asking, because the vents are the part of a new roof that sits in the weather with no shingle over them.
Related questions
How much did this roof replacement in Renton cost?
The project investment range for this completed job was $18,700 to $29,400 for a full tear-off, partial decking replacement, rafter tail replacement at one eave, and a complete CertainTeed Landmark system with six added metal box vents. The range reflects this project’s scope and is not a current quote.
What shingles and underlayment were installed?
CertainTeed Landmark laminate asphalt shingles in the color the job file lists as Black Walnut, over CertainTeed RoofRunner synthetic underlayment, with a self-adhered membrane in the valleys and along the eaves under it. The job also included new metal box vents, new pipe flashings with storm collars, new apron flashing at the sidewalls, and new metal drip edge.
Was the roof decking replaced?
In part. The deck was oriented strand board and most of it was sound. One valley carried a dark stained band that widened toward the eave, and those sections were cut out and replaced with new plywood on June 25, 2026, along with the sheathing over the rebuilt eave. The estimate carried a decking replacement line, so this was priced before the tear-off rather than added during it.
Why did the roof need rafter tail replacement?
Rafter tails are the ends of the rafters that carry the roof overhang past the wall, and they sit at the wettest part of the roof. On this job the estimate carried a rafter tail replacement line, and on June 25 the crew opened the overhang at one eave down to the framing, replaced the tails, and re-sheeted the edge before the underlayment went on. The job file does not record how many tails were replaced.
How long did the project take?
Two days on the roof. Tear-off, decking, the rafter tail work, and full dry-in were June 25, 2026; shingles, vents, flashing, and the completion photos were June 26. The job closed out July 1, 2026, about a month after the May 26 inspection.
Have a roof with similar symptoms?
If your shingles are losing granules in patches, if there is moss in the course lines, or if the colour is running in uneven bands across the slopes, Squatch Roofing can run a free 21-point inspection, show you the photos, and tell you whether a repair, a Roof Maxx treatment, or a roof replacement is the honest answer. Squatch serves Renton, the Eastside, and the greater Seattle area. Related projects: the two-layer replacement in Everett and the Landmark PRO replacement in Seattle. Schedule an inspection or call (425) 292-8327.
This project documentation was prepared by Squatch Roofing from the job records and photos from our crew, September 2026. Technical review by Ben Metsker, Manager, Squatch Roofing.
