Most contractors don t recommend pressure washing or power washing a roof.
Pressure was roofs.
Pressure washing is very effective but may be best for metal or concrete roofs.
Not to mention using a pressure washer from a high place is dangerous.
As an oxygen based cleaner the product only has an active life of 4 6 short hours before this product biodegrades making it by far the safest product in the roof.
Safe effective.
High pressure and harsh chemical systems can also drastically reduce the useful life of your tile roof.
This is because the water comes out too forcefully and can damage the material.
Never pressure wash your roof if you have asphalt shingles.
The power washer experts at pressure washers direct have written this guide to explain how to safely and effectively clean algae moss and lichen off of your asphalt shingle roof.
This approach doesn t involve any water no mess and won t damage the tiles.
Roof cleaning can be achieved by manually removing any excess moss and then applying the correct chemicals to the tiles.
The water pressure will remove the granules that are important for protecting your roof.
Redihan s roof wash ideal for roof cleaning and removing stains from moss mildew lichen or black algae on roofing shingles including asphalt metal tile wood shake rubber and new composite materials.
Pressure cleaning a roof when done properly using rotary cleaning equipment is safe cost effective and will not force water through or under tiles as the jet angle is controlled and always points away and down the roof rather than into or all over the place which is the case when blasting with a lance or wand is used.
Instead soft washing with a garden hose is least likely to chip dent or crack the tiles or panels.
There is a chance that the pressurized water could damage your shingles.
Pressure washing a roof.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.
Pressure washing is unlikely to be successful on a flat roof as the membranes used on flat roofs are often very easy to tear and water tends to puddle on a flat surface rather than flowing off.
Pressure cleaning companies are not trained licensed or certified to work on or repair any type of roof.
Overall pressure washing your tile roof can cause irreparable damage to your roof especially when done by untrained persons.
The power of pressure washers can be too much of a good thing.
Read more about why pressure washing a roof is a very stupid thing to do.