The Ultimate Pressure Washing Checklist for Your Johns Creek Home
Pressure washing is the fastest way to restore your home’s exterior—but one wrong move can strip paint, etch concrete, or void warranties. We’ve pressure washed thousands of homes from Alpharetta to Peachtree Corners, and this checklist ensures you prep, clean, and protect like a pro.
Why Johns Creek Homes Need Regular Pressure Washing
Our humid Georgia climate is a breeding ground for mold, mildew, and algae. These aren’t just eyesores—they degrade surfaces over time, especially on north-facing walls and shaded decks.
Pollen season leaves a yellow-green film that clings to siding, driveways, and roof shingles. Without removal, it accelerates staining and can even clog gutters.
Pre-Wash Inspection: What to Check Before You Start
Walk the perimeter of your home and note problem areas: heavy mold on vinyl siding, oil stains on the driveway, or black streaks on the roof. These may require different PSI settings or specialized cleaners.
Inspect for loose paint, cracked caulk, or damaged wood. Pressure washing won’t fix these—it’ll make them worse. Repair first, then clean.
Pre-Wash Home Checklist
- Check for loose or peeling paint on siding and trim
- Inspect wood decks and fences for rot or splintering
- Clear gutters and downspouts of debris
- Identify oil, grease, or rust stains on concrete
- Note any delicate landscaping or outdoor lighting
- Test outdoor electrical outlets if using electric equipment
Choosing the Right Equipment for the Job
Residential-grade pressure washers (2,000–3,000 PSI) handle most siding, decks, and patios. For driveways or heavy concrete stains, 3,000–4,000 PSI with a surface cleaner attachment delivers even results.
GPM matters too. Higher flow rates clean faster but can overwhelm delicate surfaces. For Johns Creek homes, 2.5–4 GPM is the sweet spot for efficiency without risk.
| Surface | PSI Range | Nozzle Tip | Notes |
|---|---|---|---|
| Vinyl siding | 1,200–1,900 | 25°–40° | Use a soft wash solution to avoid damage |
| Wood decks | 1,200–1,500 | 40° | Keep nozzle 12–18 inches away |
| Concrete driveways | 3,000–4,000 | 15°–25° | Pre-treat oil stains with degreaser |
| Brick/stone | 1,500–2,500 | 25°–40° | Avoid high pressure to prevent mortar erosion |
| Roof shingles | 500–1,200 | 65° (soft wash) | Never use high pressure; can void warranties |
Cleaning Solutions: What Works (and What Doesn’t)
Household bleach (sodium hypochlorite) is effective for mold and mildew but must be diluted properly—typically 1 part bleach to 10 parts water. Always rinse thoroughly to prevent residue.
For decks and fences, oxygen bleach (sodium percarbonate) is safer for wood and plants. It breaks down into water, oxygen, and soda ash, leaving no harmful residue.
Avoid chlorine bleach on colored concrete or stained wood—it can discolor surfaces. Use a pH-neutral cleaner instead.
Never mix bleach with ammonia or vinegar—it releases toxic gases. Wear gloves, goggles, and closed-toe shoes when handling chemicals.
Step-by-Step Pressure Washing Techniques
Start at the top and work downward to prevent streaking. For two-story homes, use an extension wand or hire a pro—safety first.
Hold the nozzle at a consistent distance (usually 12–18 inches) and use smooth, overlapping strokes. Lingering in one spot can cause etching or stripping.
Post-Wash Care: Sealing and Maintenance
After cleaning, let surfaces dry completely—usually 24–48 hours in Johns Creek’s humidity. Then, apply a sealant to wood decks, fences, or stained concrete to protect against future growth.
For driveways and walkways, consider a penetrating sealer to resist oil stains and water absorption. Reapply every 2–3 years for maximum protection.
Common Mistakes to Avoid in Johns Creek
Using too much pressure on soft surfaces like wood or vinyl can cause permanent damage. Always start with the lowest effective PSI and increase gradually.
Ignoring the direction of wood grain on decks can lead to splintering. Always spray with the grain, not against it.
Skipping pre-treatment for tough stains (like oil or rust) wastes time and water. A degreaser or oxalic acid solution can save hours of scrubbing.
Pre-treat oil stains with a degreaser or baking soda paste before pressure washing. For stubborn stains, a second pass with hot water can lift residues more effectively.
When to Call a Professional
Multi-story homes, steep roofs, or delicate surfaces like historic brick often require professional equipment and expertise. We serve Johns Creek, Roswell, and Cumming with soft wash systems for roofs and gentle techniques for older homes.
Commercial properties or large driveways benefit from our high-GPM machines and surface cleaners, which cut cleaning time in half compared to residential units.
How to Pressure Wash Your Deck Safely
Follow these steps to clean your wood or composite deck without causing damage.
- 1Clear the Area
Remove furniture, planters, and rugs. Sweep away leaves, dirt, and pine straw common in Johns Creek yards.
- 2Pre-Treat the Surface
Apply a deck cleaner or oxygen bleach solution to loosen mold and mildew. Let it dwell for 10–15 minutes.
- 3Test Your Pressure Washer
Use a 40° nozzle and test on a small, hidden area to ensure the PSI won’t damage the wood.
- 4Wash in Sections
Work in 4x4 foot sections, keeping the nozzle 12–18 inches from the surface. Always spray with the wood grain.
- 5Rinse Thoroughly
Use a wide-angle nozzle to rinse away all cleaner and debris. Avoid high pressure to prevent gouging.
- 6Let Dry and Inspect
Allow 24–48 hours for drying, then check for loose boards or nails that may need repair before sealing.
Frequently Asked Questions
How often should I pressure wash my Johns Creek home?
Most homes benefit from annual cleaning, but high-traffic areas like driveways or north-facing walls may need it twice a year. Pollen season (spring) and fall leaf drop are ideal times for maintenance.
Can I pressure wash my roof?
Traditional pressure washing can damage shingles and void warranties. We recommend soft wash roof cleaning, which uses low pressure and specialized solutions to safely remove algae and moss.
What’s the best way to remove hard water stains from my driveway?
Hard water stains often require an acid-based cleaner (like muriatic acid diluted with water) followed by a thorough rinse. Always test on a small area first and wear protective gear.
Is pressure washing safe for my vinyl siding?
Yes, but only with the correct PSI (under 1,900) and a wide-angle nozzle. Use a soft wash solution for mold and mildew, and avoid spraying directly at seams or windows.
Do I need to seal my deck after pressure washing?
Sealing is highly recommended for wood decks to protect against moisture, UV rays, and future mold growth. Composite decks typically don’t require sealing but benefit from occasional cleaning.
Can pressure washing remove graffiti from my fence or wall?
Yes, but it depends on the surface and paint type. For brick or concrete, high pressure with a degreaser can work. For wood or vinyl, a gentler approach with a chemical graffiti remover is safer.