Home › Recent Projects › Roof Replacement in Redmond, WA (NorthGate ClimateFlex, Shed Included)
Squatch Roofing replaced the roof on a home in Redmond, WA 98052 in September 2026, along with the roof of a 12 by 16 foot backyard shed. The crew tore the old zigzag-pattern asphalt shingles off to a board deck, laid new plywood sheathing, and installed CertainTeed NorthGate ClimateFlex shingles over CertainTeed DiamondDeck underlayment, with a ridge vent, new pipe boots, new metal exhaust caps, and new wall flashing. The roof was inspected August 4, 2026, torn off September 14, finished September 15, and the job closed September 17, 2026.
| Location | Redmond, WA 98052 |
|---|---|
| Service | Full roof replacement with decking replacement, plus the roof of a 12 by 16 foot backyard shed |
| Property | Two-story home with a lower roof running along the sidewalls, a siding-clad chimney chase, and a gambrel-roof shed in a wooded back yard |
| Inspection | August 4, 2026: attic, roof surface, flashing and gutter-edge photos, 46 photos on file |
| Existing roof | Older asphalt shingles in a zigzag tab pattern, with worn-through granules, cracked and lifting tabs, moss in the course joints, and a plumbing boot with a split rubber collar |
| Decking | Board decking: solid planks on most of the roof and spaced boards with open gaps on one section. New plywood sheathing was laid over the deck. The job file records a decking replacement line but not a sheet count |
| New shingle | CertainTeed NorthGate ClimateFlex; the job file lists the color as Granite Grey |
| Underlayment | CertainTeed DiamondDeck synthetic underlayment, with a self-adhered membrane along the sidewalls and around the chimney chase |
| Ventilation | Ridge vent along the main ridge, metal box vents on the lower roof, new metal exhaust caps |
| Flashing | New pipe boots, new black metal step and apron flashing at every sidewall, new flashing at the base of the chimney chase, new drip edge |
| Shed | 12 by 16 foot backyard shed re-roofed in the same visit, included in the replacement line item |
| Schedule | Tear-off, decking and dry-in September 14; shingles, ventilation, flashing, the shed, and completion photos September 15; job closed September 17, 2026 |
| Project investment range | $30,300 to $47,600 |
| Warranty | Squatch 15-Year Leak-Free Guarantee on workmanship, plus the CertainTeed materials warranty for NorthGate |
What Squatch Found on the Inspection
The 21-point inspection ran August 4, 2026. It started in the attic, where the photos show plank board sheathing on the rafters, then moved onto the roof. Problems were marked in blue chalk on the roof, and those marks are the best record of what it looked like.
- Worn-through granules: close-ups show patches where the granule surface was gone and the black asphalt mat was showing, on more than one slope.
- Cracked and lifting tabs: one photo shows a tab lifted by hand with a crack across it; on the lower roof a cluster of tabs is boxed in chalk.
- Moss: green and brown growth along the course joints of the zigzag pattern.
- Penetrations and walls: a plumbing boot with a split rubber collar, and the flashing where the lower roof meets the siding, both chalked.
- The shed: the backyard shed’s roof was photographed on the same visit and quoted with the house.
Why We Recommended Replacement
A split pipe boot or one cracked tab is a repair. This roof had both, plus granules worn through to the asphalt and cracked tabs on more than one slope. Repairs on a surface that is wearing out everywhere replace a few tabs and leave the rest of the field at the same age. The estimate was written as a full replacement with a decking line included, and the backyard shed was carried on the same line item.
On August 19 the project was planned on an overhead image of the property. The markup flagged cap flashing where the upper and lower roofs meet, more ventilation along the lower roof, and a question about bird block for the exhaust at the top. A note about a gutter solution along one rake was a note for later; gutters were not part of this job.
What the Tear-Off Uncovered
Tear-off started the morning of September 14, after a building permit was posted at the front door and the crew signed a safety meeting sheet. With the shingles off, the deck turned out to be two things. Most of the roof was solid plank boards. One section was spaced boards with open gaps between them, the kind of deck typically laid under wood shakes, with an older plywood patch already set into it. Spaced boards cannot hold shingle nails across the gaps, so that section had to be sheathed before anything else could go down.
The crew laid new plywood over the deck through the late morning. Photos taken inside the shed the same afternoon show water staining on the underside of its roof sheathing.
What We Installed
- Decking: new plywood sheathing over the board deck, so the shingles nail into a continuous surface.
- Dry-in: a self-adhered membrane along the sidewalls and around the chimney chase, then CertainTeed DiamondDeck synthetic underlayment across the field.
- Shingle: CertainTeed NorthGate ClimateFlex. CertainTeed describes NorthGate as a polymer-modified shingle made to stay flexible in cold weather. The job file lists the color as Granite Grey; in the completion photos it reads as a mixed gray blend.
- Ventilation: a ridge vent along the main ridge, metal box vents on the lower roof, and new metal exhaust caps with flat metal flanges.
- Flashing: new pipe boots, black metal step and apron flashing where the roof meets the siding, new flashing at the base of the chimney chase, and drip edge at the eaves.
- Shed: the 12 by 16 foot gambrel shed roofed in the same shingle, with new drip edge.
Squatch Roofing is a CertainTeed ShingleMaster Premier contractor and installs CertainTeed systems only.
How the Project Went, Day by Day
September 14: permit posted, safety meeting signed, and a Squatch dump trailer staged in the driveway. Tear-off took the morning; the spaced-board section and the stained shed sheathing were photographed; new plywood went down, and by the end of the day the self-adhered membrane and DiamondDeck covered the house, so it was dried in overnight. September 15: the shingle courses went on from the eaves up, then the ridge vent, box vents, exhaust caps, pipe boots, and the sidewall and chase flashing. The attic was photographed again with the exhaust ducts running up to their new roof caps. The shed was roofed last, and the final photo of the day is the finished main roof. The invoice went out September 16 and the job closed September 17, 2026.
The Finished Roof
The chalk-marked zigzag shingles, the split pipe boot, and the spaced-board section are gone. The house and the shed now carry the same NorthGate ClimateFlex shingle over new plywood and DiamondDeck, with a ridge vent on the main ridge and new black metal flashing at every wall the lower roof runs into. The completion photos show the flashing legs tucked under the siding, the new boots and exhaust caps flashed into the courses, and the shed’s gambrel slopes finished with drip edge.
What This Roof Replacement Cost
Project investment range: $30,300 to $47,600. 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.
Four things put this job at the top of the replacements Squatch has documented so far. It was two roofs, not one: the shed was its own tear-off and install. The deck needed new plywood sheathing, not just a few replaced boards. The shingle is NorthGate ClimateFlex, a polymer-modified line, rather than a standard laminate. And the lower roof runs along sidewalls and a chimney chase, which is a lot of step and apron flashing for its size.
What Homeowners With Similar Roofs Should Know
Your deck may not be what you think it is. Nothing in the attic photos showed a section of spaced boards; they only showed up once the shingles came off. If a home once had a wood shake roof, part of it may still sit on spaced boards. An estimate that carries a decking line up front is pricing that possibility in, not leaving it for a change order.
Ask about the outbuildings while the crew is there. The shed on this job had water staining on the underside of its sheathing. Roofing it with the house meant one crew visit and matching shingles, and it was carried on the same line item.
Look at the rubber, not just the shingles. The split collar on this roof’s plumbing boot is a leak point that has nothing to do with shingle age. On any roof, the boots are worth a look when you are up there.
Related questions
How much did this roof replacement in Redmond cost?
The project investment range for this completed job was $30,300 to $47,600, covering a full tear-off of the house, new plywood sheathing, a CertainTeed NorthGate ClimateFlex system with a ridge vent and new flashing, and the roof of a 12 by 16 foot backyard shed. The range reflects this project’s scope and is not a current quote.
What shingles and underlayment were installed?
CertainTeed NorthGate ClimateFlex shingles in the color the job file lists as Granite Grey, over CertainTeed DiamondDeck synthetic underlayment, with a self-adhered membrane along the sidewalls and around the chimney chase. The shed was roofed in the same shingle.
Was the roof decking replaced?
New plywood sheathing was laid over the old board deck on September 14, 2026. Most of the original deck was solid planks, but one section was spaced boards with open gaps, which cannot hold shingle nails across the gaps. The estimate carried a decking replacement line, so this was priced before tear-off. The job file does not record a sheet count.
Was the shed included in the price?
Yes. The roof replacement line item on this job includes the backyard 12 by 16 foot shed, and it was roofed on September 15 in the same shingle as the house. The investment range above covers both roofs.
How long did the project take?
Two days on site. Tear-off, new sheathing, and dry-in were September 14, 2026; shingles, ventilation, flashing, the shed, and the completion photos were September 15. The job closed September 17, about six weeks after the August 4 inspection.
Have a roof with similar symptoms?
If your shingles are wearing through to the asphalt, if tabs are cracking, or if the rubber around your vent pipes has split, 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 Redmond, the Eastside, and the greater Seattle area. Related projects: the Landmark replacement over a stained valley deck in Renton and the two-layer tear-off with new decking in Everett. 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, October 2026. Technical review by Ben Metsker, Manager, Squatch Roofing.
