# expert power wash house painting & stain new rochelle ny

Power washing is a great way to clean moss, mildew, dirt, and grime off surfaces like roofs, siding, decks, porches, and fences. However, using the right technique is crucial to avoid damage. Here’s a step-by-step guide for each area:

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🌿 1. Power Washing Moss Off a Roof

⚠️ Important:

• Avoid high pressure on roofs (especially shingles) — it can damage the surface.
• Consider using a roof cleaner or moss killer before washing.

Steps:

1. Prep the Area:
   • Cover landscaping with tarps or plastic sheeting.
   • Make sure gutters and downspouts are clear.
2. Apply a Moss Killer (Optional but Recommended): TESTIMONIALS
   • Use a pump sprayer to apply a 50/50 solution of water and bleach, or a commercial roof cleaner.
   • Let it sit for 15–20 minutes.
3. Soft Wash the Roof:
   • Use a low-pressure washer tip (like a 40° white nozzle).
   • Start from the top and work downward to avoid forcing water under shingles.
   • Gently rinse off the moss and cleaner.
4. Rinse Thoroughly and allow time for the remaining moss to die off and be washed away by rain.

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🏡 2. Power Washing a House (Siding)

Tips:

• Use the correct pressure for your siding:
  • Vinyl or wood: 1300–1600 PSI max
  • Brick: Up to 2000 PSI

Steps:

1. Close Windows and Doors, and cover outlets/lights.
2. Apply House Cleaner:
   • Use a detergent made for siding.
   • Apply from bottom up to avoid streaking.
3. Let it Dwell: Wait 5–10 minutes, but don’t let it dry.
4. Rinse:
   • Use a 25° or 40° tip.
   • Spray from top down.
   • Keep nozzle at least 12–18 inches from the siding.

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🌲 3. Power Washing Deck, Porch, and Fence

Pressure Guidelines:

• Wood Deck/Fence: 500–1200 PSI
• Composite Decking: Follow manufacturer specs — usually low PSI.

Steps:

1. Clear and Sweep the area.
2. Apply Deck/Fence Cleaner (you can use a bleach mix: 1 part bleach to 3 parts water, or store-bought solution).
3. Let Sit for 10–15 minutes.
4. Wash with Low Pressure:
   • Use a 25° tip.
   • Spray with the grain of the wood.
   • Maintain a consistent distance (about 12–18 inches).
5. Let Dry for 24–48 hours before applying any stain or sealant.

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✅ General Tips:

• Use proper nozzles:
  • 0° Red: Not recommended – too strong
  • 15° Yellow: Good for tough grime
  • 25° Green: General cleaning
  • 40° White: Soft surfaces
• Test first: Always test in a small, hidden area.
• Wear safety gear: Goggles, gloves, and non-slip shoes. westchesterpainters.net
• Avoid ladders: Use extension wands instead for safety.

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