The secret to exterior window cleaning is using the right method, not the most pressure. In Mountlake Terrace, WA, we match the cleaner and pressure to the surface so it comes out clean without damage. You may also hear it called exterior window washing or window washing.
Method and pressure
Signs you need exterior window cleaning
- Spotty or streaky glass
- Hard-water spots from sprinklers
- Dirty frames and sills
- Screens full of dust and pollen
Where the grime comes from
- Rain and sprinkler water drying on the glass
- Pollen and dust
- Runoff from dirty siding and roofs
Safe steps for homeowners
- Use a squeegee and a mild soap solution on reachable windows
- Clean screens with a soft brush and hose
- Point sprinklers away from windows
Not sure what you're looking at? The free stain identifier and safe pressure guide explain each stain and surface.
Common mistakes to avoid
- Pressure washing windows, which can break seals and push water inside
- Scratching glass with abrasive pads or razors on tempered glass
How we handle exterior window cleaning
- Remove and clean screens
- Wash glass and frames
- Treat hard-water spots where possible
- Detail sills and tracks
- Reinstall screens
Typical exterior window cleaning prices
What moves the price:
- Size: square footage of siding, roof or flatwork
- Condition: heavy growth, old stains and peeling finishes take longer
- Access: number of stories, roof pitch, slopes and how close we can park
- Add-ons: sealing, gutter brightening and other services done in the same trip
These are typical U.S. ranges, not a quote. You get an exact price before any work starts. For a quick estimate, try the pressure washing cost calculator.
Serving Mountlake Terrace, WA and nearby towns
Moss and algae stains, plus tannin stains from fir and cedar needles, are the usual problems on Washington concrete and decks.
We provide exterior window cleaning across Mountlake Terrace (ZIP code 98043) and nearby towns including Brier (1.6 mi), Esperance (2.2 mi), Lynnwood (2.3 mi) and Lake Forest Park (2.5 mi). Call (877) 658-5887 for a free quote in Mountlake Terrace.
Exterior Window Cleaning: frequently asked questions
How much does exterior window cleaning cost in Mountlake Terrace, WA?
Exterior Window Cleaning typically costs $150-$400 for a typical home's exterior windows, and usually takes 1-3 hours. The exact price depends on the size and condition, and you get it before any work starts. Call (877) 658-5887 for a free quote.
Do you use high pressure for exterior window cleaning?
Exterior Window Cleaning is done with hand cleaning or pure-water pole. Low pressure and the right solution remove growth and dirt without damaging the surface, and the growth takes longer to come back.
Is exterior window cleaning the same as exterior window washing?
Yes. Exterior window washing or window washing are other names for exterior window cleaning. Whatever it's called, we use hand cleaning or pure-water pole and match the pressure and cleaning solution to the surface.
Is exterior window cleaning safe for my plants and pets?
We pre-wet plants and lawns, keep cleaning solutions diluted to what the surface needs, and rinse landscaping again when we finish. Keep pets and children inside until surfaces are rinsed and dry.
How often should I schedule exterior window cleaning?
Once or twice a year. Shade, nearby trees, humidity and heavy traffic mean more frequent cleaning; sunny, dry spots can go longer. Our free cleaning frequency tool gives a recommendation for your climate.
What if it rains on the day?
Light rain doesn't stop most washing, but heavy rain, high wind, lightning and freezing temperatures do. If the weather isn't right, we reschedule at no charge. Our work is backed by a satisfaction guarantee.