Giving it plenty of detergent and water will help cover all areas where dirt may reach.
Brick cleaning pressure washers.
At the right psi the water stream is strong enough to remove algae dirt and color shadowing from your brickwork without damaging the brick.
Allow it to work into the brick for 5 10 minutes.
The key to cleaning brick is less pressure more detergent.
Let the wall dry for a few days before washing.
Start by choosing the proper pressure and nozzle tip.
Psi stands for pounds per square inch.
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For brick you ll want a pressure washer that works at a range of 500 2000 psi.
Bricks and mortar are porous so the detergent and water will soak in a bit.
Patch cracks and holes in the brick or mortar before you wash the wall so water won t seep behind it.
Use a surface cleaner attachment or higher pressure nozzle to clean the brickwork again working from top down.
Start with moderate pressure and follow the manufacturer s instructions for the ideal nozzle distance from the cleaning surface.
To help you setup your pressure washer correctly check out these tips and tricks.
Set the pressure washer to 1000 psi or less and use a 40 degree fan tip nozzle.
Close all of your doors and windows and cover nearby plants and furniture.
Spray in horizontal strokes over a 3 or 4 foot wide area at a time.