Seattle, WA · King County
Seattle window replacement usually starts with one fogged unit and ends up being a batch. When several windows were installed at the same time, they tend to reach end of life together. Fog between the panes means the insulated glass seal has failed and no amount of cleaning will reach it. Itemised written quote before any deposit.
Vinyl, fiberglass, and wood-clad replacement windows installed across Seattle and King County. Double-hung, casement, slider, picture, bay, bow, and egress — full-frame and insert installs. Free in-home estimates.
If your windows are more than 20 years old, you are heating the outdoors. Single-pane and worn-out double-pane windows let an estimated 25-30% of your home's heat escape every winter, and let summer heat pour in during the increasingly intense July and August stretches Seattle now sees. Replacement windows installed by a competent crew — properly flashed, properly sealed, properly insulated around the frame — quietly cut energy bills, reduce street noise, and lift the look of a house more than any other single exterior upgrade.
PrimeGuard Exteriors is a window replacement contractor serving Seattle and the greater King County area. We install vinyl, fiberglass, and wood-clad replacement windows from established manufacturers. We do full-frame replacements and pocket inserts depending on what your home needs. Every install carries a 2-Year Workmanship Warranty + Manufacturer Warranties from us, on top of the manufacturer's product warranty.
Cost-effective, energy-efficient vinyl replacement windows with multi-chamber frames, low-E glass, and argon fills. The most popular choice for Seattle homeowners.
Premium fiberglass frames with the strength of steel and the thermal performance of vinyl. Best long-term value for high-end Seattle homes.
Real wood interior with aluminum or fiberglass exterior cladding. Premium aesthetic for craftsman and historic Seattle homes.
Classic double-hung tilt-in windows or crank-out casement windows. Standard and custom sizes in vinyl, fiberglass, or wood-clad.
Large fixed picture windows for views and natural light. Custom bay and bow installs with proper structural framing for Seattle's larger view homes.
Seattle rain finds its way through old window seals. We address rot at the sill, jamb, and framing before installing new windows — done right means it stays dry for the next 30 years.
PrimeGuard installs replacement windows across all of Seattle and surrounding King County communities:
Tell us a little about your home and we'll come measure, bring sample frames, and give you an itemized written estimate on the spot. No pressure, no upsell, no high-pressure window-replacement sales tactics you've heard about.
Prefer to talk? Call (253) 365-9322.
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Most Seattle homeowners spend between $650 and $1,800 per window installed depending on size, material, and complexity. Vinyl is the most affordable, fiberglass mid-range, wood-clad at the premium end. A whole-house window replacement project in Seattle typically runs $9,000 to $35,000. We give you an itemized estimate per window on the first visit.
Vinyl and fiberglass windows with Low-E coatings and argon-filled double-pane glass are the workhorses of Seattle window replacement. Both stand up to the rain, both reduce heating costs, both come with strong manufacturer warranties. Wood-clad is excellent for older craftsman and historic homes where appearance matters most.
Inserts (pocket installs) are faster, cheaper, and work when your existing frame is in good condition. Full-frame replacement is required when there is dry rot, water damage, or you want to change window size. We tell you which is right after inspecting — we never push full-frame when an insert is the better fit.
A typical 10-15 window project in Seattle takes 2-4 working days. Larger homes or full-frame replacements with trim work can run 5-7 days. We give you a firm timeline before starting.
PrimeGuard is an owner-run installer with in-house crews and James Hardie Alliance enrollment. Our Washington State (L&I) contractor registration is in active processing; full documentation is provided before any contract is signed.
2-year workmanship warranty, plus the manufacturer warranties on your materials. That sits on top of the window manufacturer's warranty (glass, seals, mechanical parts — typically 20 years or longer). Two layers of warranty on every install.
Straight answers to the questions we get asked most.
Written by the PrimeGuard Exteriors team.
We are family-owned and second generation. Our owner’s father ran a siding crew for 14 years, and he started on the jobsite himself at 15. Today PrimeGuard runs two crews across the South Sound — siding, replacement windows, doors, trim and exterior paint.
James Hardie ALLIANCE enrolled. Every job carries our 2-year workmanship warranty plus the manufacturer’s warranty on the products we install.
PrimeGuard Exteriors LLC · 10710 Sierra Dr E, Puyallup, WA 98374 · (253) 365-9322 · WA UBI 606223270
Share a few details and we’ll help you choose the right next step for siding, windows, dry rot repair, or exterior upgrades.
