Power washing can damage the wood and bleach can damage a power washer.
Power washing cedar siding.
The exact procedures you will use depend on the condition of the old stain and the type of new stain that will be applied.
I have stripped cedar homes of their stain using chemicals completely without a pre.
Use on old cedar to remove the outer dead gray layer of wood pulp plus stains from mold and mildew then reveal new clean looking cedar.
Depending on your washer s psi rating this might mean anywhere from 18 inches to 6 feet away minimum.
Once cleaned and allowed to dry the wood can then be.
The latest company is convinced that you should not must not powerwash rough cedar siding before the prep but hand sand it down which adds alot to the cost.
Though it may be more time consuming always clean your cedar siding by hand.
How to pressure wash cedar shake siding.
Pressure washing is a key factor in maintaining cedar siding for many years to come.
A pressure washer can be used on any type of exterior wood siding including cedar shake or rough sawn cedar siding and t1 11 wood siding.
There are several considerations before getting started.
1st cedar is a relatively soft wood.
Do not attempt to power wash your cedar siding.
Whether it is white or red cedar or clapboard or even alaskan yellow cedar it is still wood has longitudinal pores running its length from butt to feathered edge on a shingle as well as on cedar clapboard.
Use wash safe cedar wash to clean old cedar shake roofs cedar shingle siding cedar fencing or any other cedar used outdoors.
Be sure the person power washing.
Not pressure washing your cedar siding will lead to mold and mildew problems and can cause deterioration.
2 spraying with a power washer is akin to taking a chisel and chipping gouging into the cedar.
That is leaving most of the cleaning to be done with chemicals and lightly using a pressure washer or not at all.
Under certain conditions pressure washers can cut into concrete and brick so imagine the potential effect on cedar vinyl or even fiber cement siding this inadvertent etching is easy to avoid though if you simply stand well back when aiming your sprayer at the siding.
The force exerted by the power washer will cause moisture to be forced through the pores of the wood and may cause damage.
Power washing can be used to clean cedar as long as the sprayer is set at a low pressure to prevent damaging the wood s soft surface.