Pressure-washing guides you can watch.
Short walkthroughs of the exterior-cleaning jobs every San Diego homeowner should know. Each guide comes with step-by-step instructions and a clear line on when to call a pro.
What exterior cleaning can you safely do yourself?
Soft wash basics for siding and roofs
Black streaks on a roof or mildew on stucco aren't pressure problems, they're chemistry problems.
Prep a deck for re-staining
A restained deck only lasts if the old finish is gone and the wood is clean, dry, and open.
Clean the outside of your gutters
The black tiger-stripe streaks on your gutters are oxidized paint binder, and yes, it comes off.
Build an annual exterior-cleaning routine
Two hours of DIY upkeep each spring keeps the place from ever needing a big restoration wash.
When should you stop and call a professional?
Six signs that the problem is past DIY. Turn the system off and pick up the phone, running a system with these issues turns cheap repairs into expensive replacements.
- Black streaks on your roof that won't rinse off
That's Gloeocapsa magma algae, not dirt. It needs soft-wash SH chemistry to kill the organism at the root, not pressure. Pressure will strip your granules.
- Two-story house or steep roof work
Ladder safety and water weight from a soft-wash setup is a real risk. Every year people fall off ladders cleaning their own gutters. Not worth it.
- Etching, stripes, or "zebra" marks on concrete
The last cleaning was too aggressive or the tip was too close. Continuing to clean the same way makes it worse. A surface cleaner with hot water blends it back.
- Rust, oil, or paint stains that rinse-and-scrub won't touch
These need targeted chemistry (F9 Barc for rust, hydrocarbon cleaner for oil, specific strippers for paint). Wrong chemistry can set the stain permanently.
- Graffiti on stucco, block, or brick
Needs solvent chemistry + warm water + the right wand technique. DIY attempts usually drive the paint deeper and leave a shadow that's harder to remove.
- Natural stone, travertine, flagstone, limestone
These react to pH. The wrong cleaner etches permanently. A pro will patch-test and use neutral chemistry before committing to the full job.
What industry resources should I know about?
PWNA, Power Washers of North America
Industry trade association, find certified contractors and homeowner guides.
UAMCCUAMCC, United Association of Mobile Contract Cleaners
Certification body for soft-wash and pressure washing. Public resources on safe methods.
ARMAARMA Roof Cleaning Guidelines
Asphalt Roofing Manufacturers Association, official guidance on cleaning asphalt shingle roofs.
EPAEPA Concrete Wash Water Disposal
How to capture and dispose of pressure-washing wastewater to stay compliant with stormwater rules.
Still stuck? Call a real crew.
If the guide didn't solve it, we probably can. Free on-site estimate, same-week service across San Diego County.