Your Seattle Window Replacement Specialists

Serving Builders, Contractors and Homeowners in the Greater Puget Sound region for window and door retrofit and remodeling needs. We stake our name on quality workmanship and old-fashioned attention to detail.

Contact us or visit our Seattle showroom

What Keystone Offers You

∙ Free initial design consultation for improved curb appeal

∙ Lifetime window warranties and Keystone “Gold Key” installation warranty

∙ A huge selection of top-brand vinyl, wood, woodclad, aluminum and fiberglass windows

∙ Specialists in energy efficiency, helping you earn your federal tax rebate

∙ Fine-finish carpenter installers who are long-time employees, never subcontractors

∙ A Washington State woman-owned company in business since 1998

Now Partnering with Junction True Value Hardware

We are hoping to get to know our West Seattle neighbors a little better, so Keystone Windows now has a kiosk in the West Seattle Junction True Value hardware store! Junction True Value is an excellent community-focused small business, which makes them a great match for Keystone. Check them out for all your hardware needs, and be sure to stop by the Keystone kiosk to see our newest featured products.

Look at all these great services they offer:

A Full-Service Local Hardware Store