Sumas, WA · Whatcom County

Roofing in Sumas from a family-owned GAF Master Elite roofer.

Right on the border, Sumas takes the brunt of cold Fraser Valley winds, heavy rain and the occasional flood season. Topside has been replacing and repairing Whatcom County roofs for over 35 years.

  • Free inspection and written estimate
  • GAF Golden Pledge lifetime warranty available
  • Serving Sumas, Nooksack and Everson for 35+ years
White home with a new roof by Topside
4.6
117 Google reviews
35+Years local
10,000+Projects
Top 2%GAF Master Elite
A+BBB rating
FreeWritten estimates

Roofing in Sumas

What Fraser Valley weather does to a Sumas roof.

Cold outflow winds from the Fraser Valley hit Sumas first, and the open farmland around town gives that wind plenty of room to build.

Outflow windsStrong, cold winds out of the northeast can lift shingle edges and tear off ridge caps. Proper nailing and good starter strips keep shingles down.
Rain and floodingLong wet seasons and high water years mean roofs and gutters have to move a lot of water away from the house.
Hard freezesCold snaps after rain freeze water at the eaves. Ice and water leak barrier along the edges keeps that water out of the home.

Sumas homes

From town homes to farm buildings.

Sumas has a mix of older homes in town and rural properties with shops and barns. Many older roofs have past layers or tired decking. We tear off to the deck, replace anything soft and give you a clean, watertight roof.

On open lots, wind is the main enemy. We pay close attention to edges, ridges and fastening so your roof stays put through winter storms.

Ridge line on a new Topside shingle roof

Recent work

Roofs our crews have finished.

Real Topside projects from around Northwest Washington.

New architectural shingle ridge on a Topside roof
White home with a new dark shingle roof by Topside
New chimney flashing on a Topside shingle roof
Finished Topside roof with neighborhood view
Skagit Valley home with a new Topside roof
New gray shingle roof among evergreens

What's included

Every Topside roof replacement includes:

Full tear-off to the deck

No roofing over old roofing. We remove everything so the deck can be checked.

Decking repair

Soft or rotted plywood is replaced before the new roof goes on.

Underlayment and leak barrier

Synthetic underlayment, plus ice and water leak barrier in valleys and at eaves.

New flashing

Walls, chimneys, skylights and vents get new flashing, not reused metal.

Ventilation check

Ridge and intake venting sized so the attic can dry out in our damp months.

Cleanup and walkthrough

Magnet sweep for nails, all debris hauled away, and a final review with you.

GAFGolden
Pledge
Warranty

Warranty

A warranty backed by GAF, not just the roofer.

Lifetime
Coverage on qualifying GAF shingles and system parts
50 years
Non-prorated coverage for manufacturing defects
25–30 yrs
GAF coverage for installation errors

Available on qualifying complete GAF roof systems installed by a GAF Master Elite contractor.

Reviews

What homeowners say.

★★★★★
“Topside roofing recently installed a new roof for us. They did excellent work; we love it! They promptly responded to all my questions, offered a competitive price, had a hard working crew out here to do the job, picked up after themselves and overall made the process simple.”
Kiersten J. · Google review · roof installation
★★★★★
“The team who put on my new roof did a beautiful job. They were friendly, respectful, and professional, and afterwards did a very thorough clean-up of the property.”
Sibyl S. · Google review · new roof

Nearby

Also roofing near Sumas.

Sumas roofing questions

Do you serve all of Sumas?

Yes. Topside works across Sumas and the surrounding area, including Nooksack, Everson and Kendall.

Do you do roof repairs too, or only replacements?

Both. If the roof is in good shape and the problem is in one area, a repair may be all you need. See our roof repair page.

How much does a new roof cost in Sumas?

It depends on roof size, pitch, layers, material and what we find under the old roof. We give a free written estimate, and monthly payments are available through our financing partners.

What about moss on my roof?

Moss holds water against the shingles and lifts their edges. We can clean and treat a roof that still has life left, or talk through replacement if the shingles are worn out. See roof maintenance.

Is Topside local?

Yes. Topside is a family-owned roofing company based in Bellingham that has been roofing Northwest Washington since 1989.

Get a free roof estimate in Sumas.

Family-owned, GAF Master Elite, and roofing Whatcom County for over 35 years.