When we handle pre-paint washing for aluminum siding in Colorado, it comes down to three things: protecting your plants and property, cleaning with the right method, and walking the job with you at the end. For aluminum siding, that means soft wash.
Method and pressure
Cleaning solution: A gentle detergent solution; strong cleaners can dull the finish further.
Caring for aluminum siding
Older aluminum siding often has a chalky, oxidized finish. Washing removes dirt and mildew but also removes loose chalk, which can make faded panels look patchy. If the finish is badly oxidized, washing is usually the prep step before repainting.
Avoid: High pressure, which dents thin panels and strips chalky paint unevenly.
How often: Every 1-2 years.
Signs you need pre-paint washing for aluminum siding
- You're about to paint or stain the house
- Chalky residue comes off on your hand
- Mildew or dirt under the old paint
Where the grime comes from
- Paint chalking as it ages
- Mildew that will grow through new paint if not killed
- Dirt that weakens adhesion
What you can do yourself
- Ask your painter what prep they need
- Allow siding to dry for the time the paint maker recommends before painting
Not sure what you're looking at? The free stain identifier and safe pressure guide explain each stain and surface.
Common mistakes to avoid
- Painting over mildew, which bleeds through
- Too much pressure that damages wood or drives water into the wall
- Painting before the wood is dry
How we handle pre-paint washing for aluminum siding
- Coordinate with your painter
- Protect plants and fixtures
- Kill mildew and wash the surface
- Remove loose chalk and dirt
- Leave the house to dry before painting
Typical pre-paint washing for aluminum siding 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.
Other services for aluminum siding
Local pre-paint washing for aluminum siding for Colorado
In Colorado, strong sun fades siding and paint, and winter grime builds up along the bottom of walls. A gentle spring wash removes it without stripping a finish that the sun has already weakened.
Much of Colorado has hard water. Sprinklers and misters leave white mineral spots on walls, windows, fences and pool tile, and those spots need a mineral-safe cleaner, not more pressure.
Some cities in Colorado limit outdoor water use, including washing hard surfaces with a hose, especially during drought declarations. Pressure washers use far less water than an open garden hose, but rules vary, so it's worth checking your city's current restrictions. Wash water should also be kept out of storm drains.
We cover 159 cities and towns across Colorado. Find pre-paint washing for aluminum siding in your city:
- Denver
- Colorado Springs
- Aurora
- Fort Collins
- Lakewood
- Thornton
- Westminster
- Arvada
- Centennial
- Pueblo
- Greeley
- Boulder
Pre-Paint Washing for Aluminum Siding: frequently asked questions
How much does pre-paint washing for aluminum siding cost in Colorado?
Pre-Paint Washing for Aluminum Siding typically costs $250-$600 for a typical home exterior, and usually takes 2-4 hours plus dry time. The exact price depends on the size and condition, and you get it before any work starts. Call (555) 010-0000 for a free quote.
Do you use high pressure for pre-paint washing for aluminum siding?
For aluminum siding: soft wash, typically under 500 PSI. What we avoid: high pressure, which dents thin panels and strips chalky paint unevenly. The cleaning solution does most of the work, followed by a gentle rinse.
Is pre-paint washing for aluminum siding 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 pre-paint washing for aluminum siding?
Every 1-2 years. 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.