Apply a storebought or diy cleaning.
Power washing wood shingle roof.
Power washing a composition roof will remove the protective granular from the outer layer of the shingles leaving the shingles less protected from the sun and other harsh weather conditions.
Don t use a pressure washer on the roof.
It will also leave gouge marks in the lower layers leaving them more vulnerable to the elements.
Pressure washing will pull stain right off of wood surfaces.
Instead soft washing with a garden hose is least likely to chip dent or crack the tiles or panels.
You should never power wash any kind of roof.
This is because the water comes out too forcefully and can damage the material.
A wood shingle roof should be washed carefully using a softwash process utilizing the correct detergents to insure the wood shingles are cleaned safely while maintaining the integrity of the wood and the natural oils that are in the wood.
There are several products on the market specifically designed to remove algae stains from roofs such as wet forget outdoor.
Not to mention using a pressure washer from a high place is dangerous.
While an occasional cleaning might not harm your roof repeated use of harsh chemicals or the erosive effects of pressure washing can damage or shorten the life of asphalt shingles.
The high powered water jets can damage shingles and remove the shingle granules that protect the roof.
There is a chance that the pressurized water could damage your shingles.
Read 4 reasons you should never pressure wash your house.
Pressure washing is very effective but may be best for metal or concrete roofs.
It s generally not necessary to pressure wash a shingle roof for the purpose of removing ordinary dirt and leaves and pressure washing can potentially damage the shingles coating of protective grit.
Most contractors don t recommend pressure washing or power washing a roof.
The power of pressure washers can be too much of a good thing.
Step 2 refinish shingles.
After the wood has dried normally 2 4 days you can let the wood age naturally or apply an oil based semitransparent stain.
Consumer reports experts share pressure washer cleaning advice for your deck roof siding car and more.
Never pressure wash your roof if you have asphalt shingles.