360-932-0505
Windows — Vinyl, Fiberglass, Wood-Clad2026-09-11T11:38:59-07:00

Windows that seal, insulate, and last

Vinyl, fiberglass, and wood-clad window replacement across Bellingham and Whatcom County. Cut your energy bill and quiet the house.

Replacing windows is the highest-return efficiency upgrade you can make

Old single-pane and early double-pane windows leak more energy than any other part of a typical Whatcom County home. Replacing them cuts heating bills, kills drafts, quiets the house, and eliminates condensation on the interior glass.

We install windows sized correctly, flashed properly, and sealed against the Pacific Northwest’s driving rain. Every install includes proper interior and exterior trim, and we haul off the old units.

What's included

Full-Frame Replacement

Down to the rough opening, re-flashed and re-trimmed.

Insert Replacement

Retrofit into existing frames when the frame is sound.

Efficiency Upgrades

Low-E glass, triple-pane options, and proper air sealing.

What we offer

Vinyl Windows

Vinyl is the most popular replacement window in Whatcom County — good performance at a reasonable price. Modern vinyl frames are dimensionally stable, hold color well, and come in a range of profiles. We install to fit the opening properly, not just to fill it.

Fiberglass Windows

Fiberglass costs more than vinyl but is more dimensionally stable, holds paint, and comes in more color options. It’s a strong fit for larger openings and for Bellingham homes where the window is a major architectural element.

Wood-Clad Windows

Wood interior with aluminum or fiberglass exterior cladding gives you real wood inside and a maintenance-free exterior. We install Marvin, Andersen, and similar wood-clad units on higher-end Whatcom County remodels and new construction.

Egress Windows

Bedrooms below grade need egress windows to meet code. We cut, frame, and flash egress openings and install the well and cover — a common part of basement finish projects across Bellingham and Whatcom County.

Window Replacement Process

We measure existing openings, order units with a 4 to 8 week lead time, then install most whole-house replacements in 2 to 4 days. Full-frame installs include new flashing, sill pans, and interior and exterior trim.

How the project runs

01

Assessment

Measure existing windows, note any framing or trim issues.

02

Order

Windows on order — 4 to 8 weeks typical lead time.

03

Install

Most whole-house replacements complete in 2 to 4 days.

04

Finish

Interior and exterior trim, caulk, and cleanup.

Frequently Asked Questions

Do new windows really pay for themselves?2026-09-09T13:24:10-07:00

On heat cost alone, not always inside a decade — but the comfort improvement, noise reduction, and reduced condensation are usually what homeowners actually notice first.

Will you match my existing trim style?2026-09-09T13:24:02-07:00

Yes. We can install to match existing interior and exterior trim profiles, or upgrade the trim as part of the project.

How long does the install take?2026-09-09T13:23:48-07:00

A typical whole-house replacement takes 2 to 4 days once windows arrive. Single-window replacements are same-day.

How much does whole-house window replacement cost?2026-09-09T13:23:40-07:00

A typical Whatcom County home with 12 to 18 windows runs $12k to $35k depending on window type and size. Larger custom shapes add cost.

Vinyl or fiberglass?2026-09-09T13:23:32-07:00

Both perform well in our climate. Vinyl is less expensive and lasts 20 to 30 years. Fiberglass costs more but is more dimensionally stable, comes in more color options, and lasts 40-plus years.

Ready to start your project?

Free estimates for Whatcom County residential projects. No obligation, no pressure.

© 2026 LGC Construction, LLC · Licensed & Insured in Washington State · Whatcom County