Is Pressure Washing A Roof Bad

Pressure washing is very effective but may be best for metal or concrete roofs.

Is pressure washing a roof bad.

For starters we never recommend. If your house is made from a wood frame with any type of wood siding there is definitely a chance that pressure washing your house will launch water into the siding which can soak through wall cavities flooring wiring insulation and plaster. Not to mention using a pressure washer from a high place is dangerous. After a good power washing the roof will look great but if too much pressure is used a significant chunk of the roofs life has just been removed it looks better though so imo using a power washer on a roof is a big no no people still do it though and the customer is happy because they don t know that their roof was damaged by the power washing.

The water pressure will remove the granules that are important for protecting your roof. Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder. 3 siding damaged or knocked loose. Never pressure wash your roof if you have asphalt shingles.

Of course some chemicals can harm your roof as well and the runoff could cause problems with your landscape or parts of your home. 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. A main concern that people have is that the hard jet of water coming from the pressure washer nozzle is too strong and will loosen or damage the shingles and thus leave the roof porous and vulnerable to rain. By billie jo jannen 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.

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. 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. There is a chance that the pressurized water could damage your shingles.