A streaky roof can make a home look older and leave buyers wondering about replacement costs. See why cleaning it before listing can be money well spent.

Major asphalt shingle manufacturers warn homeowners about algae, moss, lichen, trapped moisture, roof debris, and pressure washing damage. Here’s what the shingle makers themselves say about proper low-pressure roof washing and why keeping your roof clean is more than just curb appeal.

Most people do not think about roof washing until their shingles start looking bad. Dark streaks show up, moss spreads across shaded slopes, and crusty spots of lichen cling to the surface. However, because the roof still technically "works" and keeps the rain out, the problem gets ignored. Insurance companies look at that exact same roof differently. To an insurance provider, your roof is one of the single biggest risk points on the entire property. It is the primary shie