But while asphalt shingles are made to handle heavy rainfall, raindrops are not quite the same as a concentrated beam of water from a pressure washer. Simply put, unless you have it on a low (and much less effective) setting, cleaning your roof with a pressure washer would likely do much more harm than good.
How do you clean an asphalt roof?
The most effective method of cleaning algae and moss from a roof is with a 50:50 mix of laundry strength liquid chlorine bleach and water. Apply with a sprayer and allow the solution to dwell on the roof surface for 15 to 20 minutes, and then rinse thoroughly with low pressure water.
Is it OK to power wash a roof?
Consistent washing of a roof will remove wet leaves, twigs, seeds, and other debris that can cause algae, mold, and other contaminants to grow in the first place! Regular power washing can then prevent damage to the roof and ensure it always looks its best.
Does Power Washing damage roof shingles?
The power of a pressure washer can damage the shingles on your roof, so it’s important that you select the proper spray tip. Start with a medium pressure spray pattern, and adjust from there accordingly. Always stand on a dry area of the roof, as wet shingles can be very slippery.
Will bleach damage asphalt shingles?
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. … Roof cleaned with oxygen bleach (left) and chlorine bleach (center).
How do I clean my roof myself?
of laundry strength liquid chlorine bleach and water. This is the best way to clean a roof if you have asphalt shingles. After spraying the roof with the mixture, allow it to sit on the surface for 15 to 20 minutes before rinsing thoroughly with clean water.
How long does an asphalt roof last?
Vented properly and installed correctly, you should get around 80-85% of the life span out of an asphalt roof. That means you can expect to get about 20-22 years out of your 3-tab shingle roof and 25-28 years out of your dimensional shingles.
What is better wet and forget or spray and forget?
The concentration that the wet and forget companies use in their products are slow to kill mold, lichen, moss, and fungi. Spray & Forget, on the other hand, uses sodium hypochlorite which is completely a different composition and is also widely popular due to its effectiveness.
What is the best roof cleaning product?
They cut through the dirt, grime, and sludge, revealing your roof’s true colors.
- BEST OVERALL: Wet and Forget Moss, Mold and Mildew Stain Remover.
- BEST BANG FOR THE BUCK: Mold Armor E-Z House Wash 64 fl. …
- BEST BLEACH: MOLD ARMOR CLEANER 1 GAL.
- BEST CHEMICAL: Spray & Forget Revolutionary Roof Cleaner Concentrate.
How often should I pressure wash my roof?
On average, a pressure wash is recommended nation-wide every two or three years. Florida homes may need it more frequently, especially after a heavy storm. You also want to make sure you are always compliant with your HOA rules. If you notice dark patches on your roof, it’s a sign mold is growing.
Does cleaning your roof damage it?
Roof Cleaning is a Regular Part of Roof Care
Neglecting your roof can lead to creeping damage that may be expensive to repair and could cause loss of personal property from intrusion of water and mold. Doing at least an annual cleaning and inspection will go a long way to prevent long-term issues with your roof.
Should I jet wash my roof?
Roofing experts warn that roof tiles should not be subjected to high-pressure washing or jet washing for many reasons which include: Removal of Lichen and moss by jet washing will invariably remove the granular surface finish and potentially damage the structural integrity of the tile, this process followed by a …
What is the green stuff on my roof?
Known as black algae or roof mold, Gloeocapsa Magma is usually blamed on dirt accumulation, mold and mildew or defective shingles. It’s actually just a blue-green algae spread by airborne spores. It is easily spread and causes those colorful stains on so many roofs.
Is soft washing a roof safe?
This has been said to effect roofs severely and can take up to 10 years off the life of a roof. Soft washing is the only way to effectively remove this algae without damaging the shingles and voiding any warranty. … Pressure washing a roof, even at low pressure, can and will void your warranty and cause granular loss.