Windows & doors · Mercer Island, WA
Door Hardware & Weatherproofing in Mercer Island, WA
Hardware, weatherstripping, and thresholds for tight seals.
Door Hardware & Weatherproofing in Mercer Island, WA
Looking for door hardware & weatherproofing in Mercer Island? Xion Build is a licensed, bonded, and insured windows & doors contractor delivering standout results for Mercer Island homeowners — start to finish, under one roof. Hardware, weatherstripping, and thresholds for tight seals.
Mercer Island projects often involve sloped lots, shoreline rules, and mid-century homes that benefit from thoughtful structural and design planning.
From energy-efficient replacement windows to patio sliders, entry doors, and folding glass walls, we install for a weather-tight, draft-free fit.
What's included in your door hardware & weatherproofing
A typical door hardware & weatherproofing in Mercer Island can involve weatherproofing, hardware, trim, air sealing — and we put the full scope in writing so you know exactly what's covered before work starts.
Windows and doors are where comfort, energy bills, and curb appeal meet — proper flashing and air sealing matter as much as the units themselves.
How much does a door hardware & weatherproofing cost in Mercer Island?
Most door hardware & weatherproofing projects in Mercer Island fall between $1,900 – $7,600, depending on the size of the space, the finishes you choose, and the condition of what's already there.
Because every home is different, we don't quote final numbers sight unseen. After a free in-home consultation you get a detailed, itemized estimate tied to your actual windows & doors project — so there are no surprises later.
Why Mercer Island homeowners choose Xion Build
Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.
One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.
Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.
Our Mercer Island windows & doors process
Each phase is inspected and documented, and we keep you updated so you always know what's happening and what's next.
It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.
We pull the permits, schedule every trade in the right order, and protect your home, landscaping, and daily routine throughout the build.
Frequently asked questions
How long does a door hardware & weatherproofing take?
Timelines depend on scope and permitting. Once the plan is confirmed we give you a realistic schedule and keep you updated as the windows & doors work progresses.
Do you offer a door hardware & weatherproofing in Mercer Island, WA?
Yes. Hardware, weatherstripping, and thresholds for tight seals. Xion Build is a licensed, bonded, and insured windows & doors contractor serving Mercer Island and the surrounding WA communities.
How much does a door hardware & weatherproofing cost in Mercer Island?
Most door hardware & weatherproofing projects in Mercer Island run $1,900 – $7,600, depending on scope, finishes, and existing conditions. After a free in-home consultation we provide a detailed written estimate so your Mercer Island price reflects the actual project — not a guess.
Do you handle permits and inspections?
Yes. We manage permit applications, schedule inspections, and coordinate any required engineering so the work passes cleanly in Mercer Island.
What should we decide before starting a door hardware & weatherproofing?
Your budget range, must-haves, timeline, and any finishes you already love. For windows & doors work we also review access, existing conditions, and whether permits are required in Mercer Island.
Related services in Mercer Island
Glass wall & window walls
Large fixed glass and window-wall assemblies.
View detailsPatio & sliding doors
Sliding and multi-slide patio doors for indoor-outdoor living.
View detailsWindow & door trim packages
Interior casing and exterior trim detailing.
View detailsEntry door installation
Statement entry doors with proper sealing and hardware.
View detailsWe also serve these areas