ServicesCommercial Windows
Commercial Windows in Mountlake Terrace
Our crew installs new windows and storefront glass in offices, shops and small commercial buildings. Floors, entries and plantings are covered before the first frame comes out, your manager gets the schedule in writing, and each area goes back into use once its new unit is sealed.

Windows for buildings that have to stay open
Commercial window work is different from a single residential job. Openings are larger, glass near doors and walkways usually has to be tempered or laminated, and the work has to fit around customers, patients or staff who still need the space. We plan each project so only a few openings are open at any time, and we tell your manager exactly which rooms or entries are affected and when.
We work on offices, retail storefronts, clinics, small mixed-use buildings and similar properties. That includes aluminum storefront framing, punched windows in office walls, and fixed or operable units in vinyl or fiberglass. We are licensed, insured and bonded, which matters to property managers and building owners who need paperwork in order before anyone sets up a ladder.
Our approach is the same one we bring to every job: drop cloths and floor runners inside, covers over shrubs and beds outside, a taped-off work zone, and someone on our crew who answers your questions directly.
What a commercial window project includes
Site walk and measurements
We take exact measurements of each window, look over sills and framing for decay or rusted fasteners, and note anything that complicates access, like an upper window above a planter or a tight stretch of sidewalk.
Glass and frame selection
We explain the options: insulated glass with low-E coatings, tempered or laminated safety glass where code requires it, and frame materials suited to the building. Aluminum stands up well in storefronts, while vinyl and fiberglass suit office walls where insulation counts most.
Permit and energy code paperwork
Commercial replacements often need a permit and have to meet Washington's energy code for glazing. We pull the permit when it applies and keep product labels and specs ready for the inspector.
Protected work areas
Runners and drop cloths go down on interior floors, nearby furniture and displays are covered, and outdoor plantings are shielded from debris. Walkways stay marked so the public can pass safely.
Sealing, trim and cleanup
Each unit is shimmed, flashed, insulated and sealed before we start the next. Old frames and glass leave with us, and at the end of each day we vacuum the work area and clean the new glass.
Signs your building is due for new windows
Fogged or hazy glass
Condensation trapped inside a double-pane window tells you its seal has broken down. On sound frames we may swap just the glass; on older frames, a complete new unit is usually the better choice.
Drafts at the desks by the window
When staff pull their chairs away from the glass every winter, or heating and cooling costs keep rising, air is likely slipping past the frame or through tired weatherstripping.
Water at the sill after rain
Months of wet weather from fall into spring will find any gap in aging glazing seals. Stained or swollen trim, or a damp carpet edge below a window, usually means the sealant or flashing has failed.
Operable units that stick or will not lock
A window that will not open, close or latch is both a ventilation problem and a security risk. Our window repair service can sometimes restore the hardware, but worn frames generally need replacing.
Single-pane or dated storefront glass
Older single-pane storefronts leak heat, let in traffic noise and may fall short of current safety glazing rules near doors.
How the work runs on site
- 1
No-pressure consultation
We meet you or your property manager on site, look at every opening, and talk through what needs replacing now and what can wait. You get a written, line-item quote afterward.
- 2
Scheduling around your business
We set a phased plan by floor, room or entrance, and can work early or after hours when that keeps your doors open. Everyone involved gets the same schedule in writing.
- 3
Installation in phases
We protect the area, remove the old unit, check the rough opening, and install, flash and seal the new window before opening the next one. No opening is left unsecured overnight.
- 4
Walk-through and handoff
We review each window with you, show you how operable units and locks work, and leave the product information and permit sign-off for your records.
What moves the cost of a commercial window job
We build each price from what we see on the site walk, not from a rate sheet, since no two buildings share the same openings, glass or access. Your quote breaks the job down opening by opening, so each line of cost is easy to trace. Flexible payment options are available.
- How many openings, and how large
- A long run of storefront panels takes more material and more hands to set than a handful of standard office windows. Custom sizes also add time at the factory.
- The glass you need
- Tempered, laminated and high-performance low-E glass each carry their own cost. Code may call for safety glass in certain spots, such as beside doors or near the floor.
- Reaching the work
- Upper-story windows, a narrow sidewalk or glass set above a planter bed may need scaffolding or a lift. That means added equipment and setup time.
- What we find under the old frame
- Rotted framing, rusted anchors or missing flashing has to be put right before a new unit can go in. We send photos and talk it through with you before any extra work begins.
- Off-hours work and permits
- Evening or weekend scheduling and any permit fees show up as their own lines on the quote whenever they apply.
Questions about commercial windows
Something not covered here? (425) 600-7934
Can you work while we are open for business?
Usually, yes. We open up just a small number of windows at a time and keep a clearly marked path so staff and customers can move around safely. If an entrance has to be closed for a short stretch, we agree on the timing with you well in advance.
Do you handle the permit?
Yes. When a project calls for one, we pull it and book the inspection. The energy code labels and glazing specs stay on site so the inspector has what they need and the sign-off is not delayed.
How long does a commercial project take?
It depends on the number of openings, the glass and how much access the building allows. A small office or shop can often be done quickly, while a full storefront may be split into phases over several days. We give you a written schedule before anything is removed.
What warranty comes with the installation?
Our installation work carries a 10-year workmanship warranty. The windows and glass are covered separately by their manufacturer, and we go over those terms along with your quote.
Which areas do you serve for commercial projects?
We take on commercial buildings in Mountlake Terrace and nearby communities such as Lynnwood, Edmonds, Shoreline and Bothell. Share the property address when you call and we will arrange a time to walk the site.

Plan your building's window project with us
Tell us about your building and how it is used day to day. We will come out, look at every opening, and give you a clear, line-item quote with a schedule that keeps your business running.