Denver's older housing stock in neighborhoods like Capitol Hill, Baker and Five Points often carries decades of layered paint over brick, wood siding and stucco. Pressure washing must remove chalk, pollen and embedded dirt without forcing water behind siding or damaging soft mortar joints common in pre-1950 homes. Afternoon thunderstorms can re-wet surfaces within hours, so timing the wash and allowing full dry time before primer is critical to prevent adhesion failure.
Semi-arid conditions leave fine dust and road grime on every exterior surface from LoDo to Park Hill. We adjust pressure and use eco-friendly detergents that break down mildew from irrigation overspray and winter road salt residue without harming nearby plants or concrete. Concrete driveways and walkways in Stapleton and Sunnyside frequently show embedded tire marks and efflorescence that require targeted low-pressure rinsing followed by neutralizer to avoid etching the surface before paint or sealer.
Pressure Washing & Surface Preparation Near You — Choose Your City
Every city below has its own local Pressure Washing & Surface Preparation page with coverage details.
Preparation also includes scraping loose caulk around windows and doors, feathering edges where old paint meets bare wood, and masking fixtures at Coors Field-area townhomes where tight access demands careful containment. Skipping these steps leads to holidays and peeling within two seasons when freeze-thaw cycles expand trapped moisture. Every job ends with a final rinse and inspection under natural light to confirm the surface is clean, dry and ready for the first coat.
Technician insight
In Denver the thing that catches most people out with Pressure Washing & Surface Preparation is how fast our semi-arid air dries surfaces while sudden thunderstorms can re-wet them before primer goes on, especially on older brick homes in Baker where mortar is already soft.
Capitol Hill Brick Row Home
Thick chalk and embedded pollen covered the south-facing brick. We washed at low pressure to protect the mortar, treated mildew on the shaded porch, and let everything dry fully between the afternoon storm and evening inspection. The painter received a clean, uniform surface that took primer without flash rust or peeling the following week.
Pressure Washing & Surface Preparation Services We Offer
✓Exterior Siding Preparation
Pressure washing removes dust, pollen and chalk from wood, stucco and brick so new paint bonds directly to the substrate in Denver's dry climate.
✓Deck and Fence Cleaning
Low-pressure washing plus brightener strips gray weathering and mildew from cedar and composite decks common in Washington Park and Cherry Creek homes.
✓Concrete Driveway and Walkway Washing
Removes tire marks, salt residue and efflorescence from driveways in Stapleton and Montclair so coatings or paint adhere without peeling.
✓Mildew and Algae Removal
Kills and rinses black mildew from north-facing walls and shaded porches in Highland and RiNo before any primer is applied.
✓Window and Trim Surface Prep
Cleans and lightly sands wood and aluminum trim around historic windows in Capitol Hill so paint lines stay sharp and last through winter freeze-thaw cycles.
Pressure Washing & Surface Preparation Cost in Colorado
| Service | Typical Range | What Affects It |
|---|---|---|
| Full exterior house wash and prep | $350–$850 | Two-story homes in Capitol Hill or Baker with heavy mildew cost more. |
| Deck or fence cleaning and prep | $175–$450 | Size, wood condition and stain level affect final price. |
| Driveway and walkway washing | $150–$350 | Concrete with heavy salt or tire marks requires extra passes. |
| Trim and window detail prep | $100–$250 | Historic homes with multiple layers add time. |
Ranges are typical for Colorado and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Assessment
Walk the property to note siding type, previous coatings, water-sensitive plants and access points in neighborhoods like Baker or Park Hill.
- 2
Targeted Washing
Apply detergent, then pressure wash at calibrated PSI to lift dirt without damaging soft surfaces or forcing water behind siding.
- 3
Detail Work and Repairs
Scrape loose material, feather edges and treat stains on concrete or wood before final rinse.
- 4
Dry and Inspect
Allow full drying time, then check under daylight for any missed spots before handing off for priming.
Pricing
Pricing depends on square footage, number of stories and surface condition; most Denver jobs fall in the ranges below.