Deck & Patio Pressure Washing
Wood decks need a gentler touch than concrete — too much pressure gouges and fuzzes the grain, which actually makes future staining absorb unevenly. Composite decking is more forgiving but still benefits from the right nozzle and distance to avoid surface scratching. Stone and concrete patios can take standard pressure and usually come up looking close to new.
If you're planning to stain or seal a wood deck afterward, cleaning is step one — old finish, mildew and grey weathering all need to come off first or the new coat won't bond properly.
- Wood-safe pressure and nozzle selection to avoid gouging
- Composite decking cleaned without surface scratching
- Stone, concrete and interlock patios included
- Staining/sealing prep wash available as a standalone service
What it costs in Kitchener
- Wood deck (under 300 sq ft): $150–$300
- Composite deck: $180–$350
- Stone/concrete patio: $150–$300
- Pre-stain prep wash (wood): +$50–$100 over standard cleaning
Deck & Patio Washing FAQs
Will pressure washing remove old deck stain?
Partially — most of it, along with mildew and greying, but a full strip for refinishing sometimes needs a chemical stripper as a follow-up step, which crews can quote separately if needed.
How soon can I stain my deck after washing?
Wood typically needs 24–48 hours to fully dry before staining, longer in humid or shaded conditions.
Is composite decking safe to pressure wash?
Yes, at the right pressure and distance — composite doesn't absorb water like wood but can scratch if the nozzle is held too close or at too high a setting.
Can you clean interlock patios too?
Basic surface cleaning yes — for full interlock cleaning plus polymeric sand resanding, that's its own specialized service (see our interlock/polymeric sand partners).