Home › Recent Projects › Roof Repair in Lynnwood, WA (Hip Caps, Field Shingles, Zinc Sulphate)
Squatch Roofing repaired a laminate shingle hip roof in Lynnwood, WA 98087 in July 2026. A drone inspection on July 15 showed moss and tree debris along the hip lines and gutter edges, with moss growing in the shingle course lines. On July 24 the crew replaced cap shingles on the hips, replaced damaged field shingles, and finished the roof with a zinc sulphate cleaning. One visit, no replacement.
| Location | Lynnwood, WA 98087 |
|---|---|
| Service | Roof repair plus zinc sulphate roof cleaning |
| Roof | Hip roof with gray laminate (architectural) asphalt shingles, a skylight, box vents, and pipe vents, under overhanging trees |
| Inspection | July 15, 2026: drone photos of the hips, eaves, and slopes |
| Findings | Moss and needle debris along the hip lines and gutter edges; moss in the shingle course lines |
| Repair scope | Hip cap shingles replaced (priced per linear foot); field shingles replaced (priced in half-square increments); quantities not recorded in the job file |
| Cleaning | Zinc sulphate powder, priced per square of roof |
| Schedule | Inspection July 15; repair and cleaning July 24, 2026 (one visit) |
| Project investment range | $2,100 to $3,300 |
What Squatch Found on the Inspection
The July 15 inspection was flown with a drone; its shadow is in two of the six photos. Trees stand close to the house, and the photos show where their debris ends up.
- Hip lines: moss and needle debris built up where the hips run down to the gutter corners.
- Eaves: the same buildup along the gutter edges on the shaded slopes.
- Course lines: green moss growing in the horizontal gaps between shingle courses near the eave, beside a pipe vent.
What We Recommended
The trouble in the drone photos was concentrated at the hips and the lower edges, not spread across whole slopes. That called for a repair, not a new roof. Squatch quoted three line items: replacement cap shingles priced per linear foot, replacement field shingles priced in half-square increments, and a zinc sulphate cleaning priced per square. The homeowner approved it, and the final invoice matched the quote plus Washington sales tax.
The job file carries the same invoice twice, with identical line items and totals. That is a duplicate in the records, not a second charge, and only one is used for the range below.
How the Repair Was Done
July 24, 2026: the crew worked the roof in one visit, and 21 photos document it. The first set is close-ups of the repair work: cap shingles along the hips and field shingles in the slopes. The rest were taken after the zinc sulphate went on and walk the roof hip by hip.
The repair close-ups are honest about one thing: the replacement field pieces read slightly darker than the shingles around them. That is common with repairs, and it shows in the photo below. The job file does not record how many caps or shingles were replaced, so this post does not give a count.
The Finished Result
The completion photos show the hips and eaves without the debris seen on July 15 and the cap shingles continuous down each hip. White zinc sulphate powder runs along the ridge and down the hips. That white is the treatment itself. It is applied dry and left on the roof, where rain dissolves it over the following weeks.
What This Repair Cost
Project investment range: $2,100 to $3,300. This range reflects the scope of this completed project and is not a current quote. It is anchored on one copy of the final invoice, which includes Washington sales tax.
Three lines set this price, and two of them scale with the job. Cap shingles are priced by the linear foot, so a roof with long hips costs more. Field shingles are priced in half-square blocks. The zinc sulphate is priced per square of the whole roof. There was no decking, flashing, or vent line on this invoice.
What Homeowners With Similar Roofs Should Know
Trees put the damage in predictable places. On this roof the debris and moss sat where the hips meet the gutters and along the shaded eaves. The upper slopes were cleaner. Those low spots are where to look first on a roof under trees.
Expect repair shingles to look different at first. New pieces set into an existing roof may not match exactly. The photos here show it plainly.
Zinc sulphate looks like a mess on day one. The white streaks are the product, left for rain to carry down the roof.
Related questions
How much did this roof repair in Lynnwood cost?
The project investment range was $2,100 to $3,300 for replacement hip cap shingles, replacement field shingles, and a zinc sulphate cleaning on a laminate shingle hip roof. The range reflects this project’s scope and is not a current quote.
Why repair this roof instead of replacing it?
The July 15 drone photos showed the trouble concentrated at the hips and the lower edges under the trees, not spread across whole slopes. Problems that local are what a repair is for.
What was replaced?
Cap shingles along the hips and damaged field shingles in the slopes. The invoice prices the caps per linear foot and the field shingles in half-square increments, but the job file does not record the quantities.
Why is the roof white after the cleaning?
The white is dry zinc sulphate powder. It is applied along the ridge and hips and left in place, and rain dissolves it and carries it down the slopes over the following weeks.
How long did the repair take?
One visit on July 24, 2026, nine days after the July 15 drone inspection. The repair and the cleaning were done the same day.
Have a roof with similar symptoms?
If moss and debris are building up along your hips and gutters, Squatch Roofing can run a free 21-point inspection, show you the photos, and tell you whether a roof repair, a roof cleaning, or more fits your roof. Squatch serves Lynnwood, the Eastside, and the greater Seattle area. Related projects: the Bellevue repair with ridge caps and zinc sulphate and the Lynnwood roof replacement with stained decking replaced. 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.
