How Do I Clean My Roof?

01 May How Do I Clean My Roof?

cleaning roof with pressure washerDirt, moss, mildew, debris—there are a myriad of things that can collect on your roof and make it look less than appealing. Sometimes dark or dirty spots on a roof indicate that your roof is in dire need of a repair, but at other times your roof could simply need a thorough cleaning. A roof is a big investment, so it’s important to take extra care as you approach cleaning it. Here is a look at the best methods for cleaning your roof.

Use a long handled scrub brush.

As we covered in this blog post about how to get rid of moss on your roof, a long handled scrub brush is your first weapon against moss and algae growth on your roof. You can use a long handled scrub brush and a mixture of mild soap and water to remove as much moss and algae growth as possible from your roof. A long handled scrub brush can also be useful for removing dirt, sludge, and other debris. It’s best to clean your roof with this method on an overcast day, when the sun cannot cause your cleaning solution to dry out before you’re done working with it.

Apply a specialized cleaner.

There are specialized cleaners, as well, that can target the particular problems that your roof is having. Specialized “bio-blocker” sprays, for example, will alter the pH levels on your roof to discourage moss, lichen, and algae growth. Mildew stain removers, meanwhile, will remove black streaks, dirt, mold, and mildew from your roof. Other more generalized roof cleaners are good for general stain removal and reviving the appearance of your roof. Experienced homeowners can typically apply these specialized roof cleaners themselves, but it’s always a safe bet to hire a professional to apply them for you.

Think before pressure washing.

One of the biggest mistakes that homeowners make when cleaning their roofs is pressure washing them. Pressure washing may be effective at removing all sorts of debris, but using improper techniques in pressure washing your roof can also be highly damaging to roofs, even causing shingles to lift off. This is particularly true of composition shingle roofs; tile roofs, meanwhile, can typically hold up well to pressure washing. Improper pressure washing techniques can also give your finished roof an uneven look, or even “zebra stripes.” When in doubt, you should always hire a professional roof cleaner to target problem areas on your roof. A team of professionals can clean your roof safely and effectively, all while minimizing the mess that can come with pressure washing a roof.

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