Tear-off and decking
Removing one old layer is part of the range. Replacing soft or rotten sheathing found underneath is priced on site.
Puget Sound material guide
Asphalt Shingle roof cost
Architectural shingles balance cost, repairability, and wet-weather performance for most Puget Sound homes.
Price my roof
Typical project range
$18,900–$27,800
for a 2,450 sq ft roof in Seattle
Expected lifespan 25–30 years
Expected lifespan 25–30 years
At a glance
Is asphalt shingle right for you?
Why homeowners choose it
- Lowest upfront cost
- Straightforward repairs
- Broad color selection
Worth considering
- Shorter lifespan than metal
- Moss maintenance on shaded homes
Cost drivers
What moves the price.
Why two asphalt shingle roofs of the same size can be priced differently.
Roof shape
Every valley, dormer, skylight and chimney adds cutting, flashing and waste — a cut-up roof costs more per square than a simple gable.
Shingle line
Premium and designer lines cost more per square than standard architectural shingles, and usually come with longer warranties.
Asphalt Shingle questions
Good to know before you choose.
How long do asphalt shingles last in the Pacific Northwest?
Architectural shingles reach their expected lifespan when the attic is well ventilated, gutters drain and moss is kept off. Wet shade and trapped moisture shorten it.
Can new shingles go over my old roof?
Only over a single existing layer that is dry and sound — Washington’s residential code rules out an overlay on two or more layers. Some cities also require a permit for it. Most replacements still start with a tear-off, so the crew can inspect and repair the decking.
Do I need algae-resistant shingles?
On shaded, tree-lined lots they help keep dark algae streaks off the roof. They do not stop moss — cutting back branches and keeping valleys and gutters clear does.
Compare your options