Is Pressure Washing A Roof Bad

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

Is pressure washing a roof bad.

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. So why is power cleaning bad for your asphalt 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. 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.

Pressure washing is very effective but may be best for metal or concrete roofs. 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. Don t underestimate the power of these pressure washers. 3 siding damaged or knocked loose.

For starters we never recommend. 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. Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder. 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.

Of course some chemicals can harm your roof as well and the runoff could cause problems with your landscape or parts of your home. Never pressure wash your roof if you have asphalt shingles. Not to mention using a pressure washer from a high place is dangerous.