Roof Replacement & Repair
Full roof replacements, leak repairs, and moss damage fixes, with the decking, flashing, and ventilation done right for Northwest rain.
Get Your Free Roofing Estimate
Tell us about your roof. We'll call to confirm a time that works for you.
- Free roof inspectionWritten quote, no pressure
- Permits handledWe check and file what your city requires
- Financing available$0 down on approved credit
- Licensed & insuredWA Lic. #DAWNCCW747K2
- Rated 4.9 on GoogleBy local homeowners
- Prefer to talk?Call (206) 672-1711
What's Included in a Roofing Project
Roof Replacement in Seattle & the Puget Sound
Dawn Construction is a licensed Washington roofing contractor serving 45 cities across Greater Seattle and the Puget Sound. We replace and repair roofs, fix the decking, flashing, and ventilation underneath, and handle the permit your city requires, backed by a one-year workmanship warranty.
One team runs your project from the free inspection to the final walkthrough, with offices in Renton and Mukilteo.
Our Roofing Services
- Full roof replacement: tear-off, decking repair, underlayment, new roofing, flashing, and ventilation.
- Roof repair: leaks, missing or damaged shingles, and storm damage.
- Asphalt shingle roofs: the most common roof on Northwest homes.
- Decking repair: rotted or soft sheathing replaced before anything new goes on.
- Flashing: chimneys, skylights, valleys, and roof-to-wall joints.
- Attic ventilation: intake and exhaust vents balanced to remove moisture.
- Gutters and downspouts: sized to carry roof water away from the house.
- Soffit and fascia: roofline repairs and replacements.
Roof Repair or Roof Replacement?
Not every leak means a new roof. The roof’s overall condition decides which makes sense.
| Option | What Changes | Best For |
|---|---|---|
| Roof repair | Damaged shingles, flashing, or a small area fixed | A sound roof with isolated damage |
| Partial re-roof | One section or slope replaced | Damage confined to one area, often a shaded or weather-facing slope |
| Full replacement | Complete tear-off; decking repaired; new underlayment, roofing, flashing, and vents | Recurring leaks, worn shingles across the roof, or soft decking |
Thinking about laying new shingles over the old ones? The residential code does not allow a roof-over when the existing roof is water-soaked or deteriorated, is wood shake, slate, or tile, or already has two or more layers. We usually recommend a full tear-off, so the decking can be inspected and repaired.
Signs Your Roof Needs Attention
- Water stains on ceilings: a leak is reaching the attic or the rooms below.
- Curling or missing shingles: openings where wind-driven rain gets in.
- Granules in the gutters: shingles are wearing out.
- Thick moss: holding water against the roof and lifting shingle edges.
- A sagging or soft roofline: decking or framing damage under the roof.
- Damp or musty attic: leaks or poor ventilation trapping moisture.
Found a leak already? Here is what to do if your roof is leaking.
Moss on Northwest Roofs
Moss is one of the most common roof problems in the Puget Sound. Our long, damp season and shade from tall evergreens give it ideal conditions. Moss holds moisture against the roof and can lift shingle edges, which lets water reach the layers underneath.
| Moss Level | What It Usually Means | What We Recommend |
|---|---|---|
| Light patches | Surface growth on a sound roof | Gentle removal; trim back overhanging branches |
| Heavy growth on one slope | Shingle edges may be lifting on the shaded side | Removal and inspection; repair damaged shingles |
| Thick moss with leaks or soft spots | Water has reached the underlayment or decking | Repair or replacement, depending on the inspection |
Avoid pressure washing a shingle roof; it can strip the protective granules.
Roofs Built for Northwest Rain
Seattle-Tacoma averages about 39 inches of rain a year, spread over many damp days. A roof here has to shed water for months at a time, so the details under the shingles matter as much as the shingles.
| Detail | What We Do | Why It Matters |
|---|---|---|
| Decking inspection | Full tear-off and replacement of any soft or rotted sheathing | New roofing over damaged decking fails early |
| Underlayment | A continuous layer under the roofing, lapped to shed water | A second line of defense against wind-driven rain |
| Flashing | New flashing at chimneys, skylights, valleys, and walls | Most roof leaks start at flashing, not shingles |
| Attic ventilation | Intake and exhaust sized to the code minimum | Lets moist air escape before it condenses under the deck |
| Gutters and drip edge | Water directed into gutters and away from the house | Protects fascia, siding, and the foundation |
Roofing Permits & Rules in Washington
Roof permit rules depend on the city. We check yours at the estimate and handle the paperwork.
| Rule | When It Applies | What It Means for Your Roof |
|---|---|---|
| Seattle | Replacing roofing with no structural changes | No permit required |
| Renton | Re-roofing | A re-roof permit, issued online over the counter |
| Structural changes | New skylights, framing repairs, or changes to the roof structure | A building permit |
| Roof-over limits | Existing roof is damaged, shake, slate, tile, or 2+ layers | Full tear-off required by the residential code |
| Asbestos survey | Before renovation or demolition in the Puget Sound region | Required by Puget Sound Clean Air Agency and L&I rules before tear-off |
Our Roofing Process
Step 1: Free Roof Inspection
We check the roof, flashing, gutters, and attic, and send a written estimate.
Step 2: Materials & Permits
You choose the roofing and color; we handle the asbestos survey and any permit.
Step 3: Site Protection & Tear-Off
We protect landscaping and remove the old roofing.
Step 4: Decking Repair
Soft or rotted sheathing is replaced before anything new goes on.
Step 5: Underlayment, Flashing & Roofing
New layers installed with ventilation and gutters checked.
Step 6: Cleanup & Final Walkthrough
Magnetic sweep for nails, site cleanup, and a review with you.
Roofing Cost – What to Expect
Every roof is priced individually, because the size, pitch, and condition decide the cost. You get a written estimate after a free inspection, before any work begins.
| Price Factor | Effect on Cost | Why It Matters |
|---|---|---|
| Roof size | More roof area means more material and labor | Measured in roofing squares |
| Pitch and access | Steep or tall roofs need more safety equipment and time | Affects crew speed and setup |
| Layers to remove | Each existing layer adds tear-off and disposal | A full tear-off lets us inspect the decking |
| Decking repairs | Rotted sheathing must be replaced | Found only once the old roof is off |
| Flashing and penetrations | Chimneys, skylights, and vents add detail work | The most common leak points |
| Gutters and ventilation | New gutters or added vents add scope | Protects the roof and the house |
Want to spread the cost? See our financing options.
What Makes Our Roofing Different
- Licensed and verifiable: WA Lic. #DAWNCCW747K2. You can check any contractor on L&I’s Verify tool.
- We fix what’s underneath: full tear-off, so rotted decking is repaired, not covered.
- Built for Northwest rain: flashing, underlayment, and ventilation done right.
- Permits handled: we file and schedule what your city requires.
- Clear pricing: a written estimate after a free inspection.
- One-year workmanship warranty: plus manufacturer warranties on materials.
Ready for a Roof You Can Trust?
Get a free roof inspection and a written estimate. No pressure, no obligation.
FAQ – Roofing
How much does a new roof cost?
It depends on the roof size and pitch, the number of existing layers to remove, the roofing material, and any decking repairs. Every roof gets a written quote after a free inspection and estimate, and financing is available.
Should I repair or replace my roof?
Repair makes sense for isolated damage on a roof that is otherwise sound. Replacement is the better choice when leaks keep returning, shingles are curling or losing granules across the roof, or the decking underneath is soft or rotted.
Can a new roof go over my old shingles?
Sometimes, but the residential code does not allow a roof-over when the existing roof is water-soaked or deteriorated, is wood shake, slate, or tile, or already has two or more layers. We usually recommend a full tear-off so we can inspect and repair the decking.
Do I need a permit to replace my roof in Washington?
It depends on your city. Seattle does not require a permit to replace roofing when no structural changes are made. Renton issues re-roof permits online over the counter. We check your city’s rules and handle any permit.
Is moss bad for my roof?
Yes, over time. Moss holds moisture against the roof surface and can lift shingle edges, which lets water reach the layers underneath. Shaded roofs under trees are most at risk in our climate.
Why does attic ventilation matter for my roof?
A ventilated attic lets warm, moist air escape. Without it, moisture can condense under the roof deck. The residential code sets a minimum ventilation area, and we check it whenever we replace a roof.
Is an asbestos survey required before a roof replacement?
In the Puget Sound region, Puget Sound Clean Air Agency and Washington L&I rules require an asbestos survey before renovation or demolition. Some older roofing materials contain asbestos, so the survey comes before tear-off.
Which areas do you serve for roofing?
Dawn Construction replaces and repairs roofs in 45 cities across King, Snohomish, Pierce, Kitsap, Thurston, Island, Skagit, Whatcom, and Mason counties, from Bellingham to Olympia.
Do you offer free estimates and financing?
Yes. Every roofing project starts with a free inspection and written estimate, and financing is available.
Other Services We Provide
Roofing Across 9 Western Washington Counties
From our offices in Renton and Mukilteo, we replace and repair roofs in 45 cities, from Bellingham to Olympia. See the full service area.
King County
- Renton
- Seattle
- Bellevue
- Kent
- Federal Way
- Redmond
- Issaquah
- Bothell
- Kirkland
- Sammamish
- Mercer Island
- Newcastle
- Auburn
- Tukwila
- SeaTac
- Burien
- Shoreline
- Kenmore
- Covington
- Maple Valley
Snohomish County
- Mukilteo
- Everett
- Lynnwood
- Marysville
- Arlington
- Monroe
- Snohomish
Pierce County
- Tacoma
- Puyallup
- Lakewood
- Gig Harbor
- Eatonville
Kitsap County
- Bremerton
- Silverdale
- Poulsbo
- Kingston
Thurston County
- Olympia
- Yelm
Island County
- Oak Harbor
- Coupeville
Skagit County
- Mount Vernon
- Burlington
- Sedro-Woolley
Whatcom County
- Bellingham
Mason County
- Shelton
Don't see your city? Contact us or call (206) 672-1711.
Sources
- Seattle Department of Construction and Inspections, Do You Need a Permit?
- City of Renton, Building Permits FAQ (over-the-counter re-roof permits)
- City of Renton, Residential Interior Remodels (asbestos survey requirement, PSCAA and L&I)
Why Dawn Construction
Licensed & Insured
Fully credentialed for your peace of mind and protection on every project.
Full Team, Real People
Call Sunday–Friday, 8am–10pm and a real person from our team will answer.
Transparent Pricing
No hidden fees or surprise costs. We respect your budget.
Start Your Roofing Project
Protect your home with a beautiful, durable new roof. Reach out for a free, no-obligation estimate.
Ready to Get Started?
Call or email us directly — we're available Sunday–Friday, 8am–10pm and respond fast.
Call (206) 672-1711