Never pressure wash your roof if you have asphalt shingles.
Should you pressure wash your roof.
But pressure washing your asphalt roof will do more harm than good.
The best time to have your roof low pressure washed is when the weather is mild and sunny.
If you do get up on your roof wear well fitting shoes with slip resistant rubber soles and be sure to don eye and skin protection.
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Pressure washing on an asphalt composite shingle roof requires no more than about 30 psi.
Why you should never use a pressure washer on roof tiles the most common roof tiles in the united kingdom are made from concrete and have a sandy granular finish on the exposed side of the tile.
Make sure that they re ready to adequately clean your roof and can guarantee no damage will be done to your property.
Should you pressure wash it.
Pressure washing is very effective but may be best for metal or concrete roofs.
Depending on your roofing materials you may need to take extra care when pressure washing.
Timing is important or else you wouldn t bother reading this and weather plays an important factor in that.
The water pressure will remove the granules that are important for protecting your roof.
An asphalt composite shingle roof requires a soft pressure wash that does not harm the granules in the shingles.
Clean your roof only after determining that you can safely walk its surface.
If the slope is too steep to easily traverse or if your house is more than one story you should hire a pro.
Pressure washing strips the granules from asphalt shingles.
Therefore it strips away.
Not to mention using a pressure washer from a high place is dangerous.
The damage caused by pressure washing is not immediately noticeable.
This part of the tile is designed to gradually wear off until the tile needs to be replaced usually after 80 100 years of normal weathering.
Tempting as it might be to blast away unsightly moss and algae using a pressure washer to clean your roof is dangerous not to mention potentially damaging.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.