Real jobs from our photo gallery. Pick the right chemical and pressure, then rub your finger over the photo to clean it. Wrong choices cost you money — just like real life!
💰 Bank: $0 ⭐ Jobs done: 0/25
This is a game for fun and learning. It is not professional training or a substitute for it. Always follow chemical labels and safety data sheets, wear proper protection, and follow local rules. Prices in the game are made up.
Read first: This is a summary of common industry guidance for learning only. It is not training and not a recipe to copy. Products and surfaces vary. Always follow the chemical label and SDS and the surface maker's instructions, test a hidden spot, wear eye and skin protection, and follow local rules on runoff. % = bleach (sodium hypochlorite) strength on the surface after mixing, not the jug strength (pro jugs are usually 10–12.5%).
Always
Wet plants and grass before, keep them wet, rinse after. Don't let any mix dry on the surface. Add chemical to water, never water to concentrate. Never mix bleach with acids or ammonia. Use a separate step and rinse between products. Never use a red 0° tip.
Vinyl / aluminum siding
Soft wash, about 1–1.5% bleach + surfactant, dwell 5–10 min, rinse at low pressure top-down. No high pressure into the laps.
Painted wood siding, stucco / EIFS
Gentler: about 0.5–1%, test first, very low pressure. EIFS is easy to damage with pressure.
Asphalt shingle roof
ARMA (shingle makers): 50/50 household bleach and water (works out to roughly 2–3%), dwell 15–20 min, rinse with low pressure. Never pressure wash or scrub shingles because the granules come off. Many pros run 3–6% on heavy growth; check the shingle maker.
Metal roof
Depends on the finish. Coil-coating makers list about 1.25% for factory-painted steel; bare Galvalume/galvanized much lower or none. Some makers say no bleach and no pressure. Check the maker's sheet.
Concrete / block
Match the stain: degreaser for oil (Dawn for light grease), bleach mix around 3–4% for mildew and algae, degreaser then bleach (separate steps) for both. Surface cleaner is the go-to; turbo tip OK on hard spots; never 0°.
Brick
About 1–3%, low to moderate pressure, go easy on mortar joints. Test for color fade.
Wood decks & fences
Sodium metasilicate wood cleaner (label rate, often 4–8 oz per gallon), keep wet 5–25 min, rinse low pressure, then oxalic acid brightener (often 4–8 oz per gallon) to neutralize and restore color. If you use bleach on wood, keep it weak (about 0.5–1%).
Oxidation (chalky siding, gutter tiger stripes)
Not mildew, so bleach won't fix it. Wipe test, use a cleaner made for oxidation per its label, short dwell, soft brush, low-pressure rinse. No pressure washing. Severe chalking may not fully come back.
