Roof washing is essential for maintaining the structural integrity and appearance of your roof. Long Island’s humid climate promotes the growth of Gloeocapsa Magma (black streaks), moss, algae, and lichen, which can trap moisture, weaken shingles, and lead to premature roof aging. Regular roof washing prevents these issues, extending your roof’s lifespan and protecting your investment.

Most roofs in Long Island should be professionally cleaned every 2–3 years, depending on environmental factors like shade, nearby trees, and exposure to humidity. Homes in areas like Islip, Smithtown, or Southampton with heavy vegetation may require more frequent cleaning to prevent moss and algae buildup.

Black streaks on your roof are caused by Gloeocapsa Magma, a type of bacteria that feeds on the limestone in shingles. Exoclean uses soft washing techniques to safely and effectively remove these streaks, restoring your roof’s appearance without causing damage.

Yes! At Exoclean, we take special care to protect your landscaping during the roof cleaning process. We use eco-friendly cleaning solutions and thoroughly rinse surrounding plants, shrubs, and grass to ensure they remain unharmed.

Absolutely. Roofs are designed to last for 20–30 years, but without proper maintenance, harmful substances like moss, algae, and debris can shorten this lifespan. By removing these contaminants, Exoclean helps your roof reach its full potential lifespan, saving you money on premature repairs or replacement.

Yes, roof washing can significantly improve your home’s curb appeal and overall value. A clean, well-maintained roof makes your property more attractive to potential buyers, especially in competitive Long Island markets like Huntington, Montauk, or Stony Brook.

Spring and early fall are the ideal times for roof washing in Long Island. These seasons allow us to remove winter debris and summer growth while preparing your roof for the coming weather conditions..

Soft washing is a gentle cleaning method that uses low-pressure water and eco-friendly cleaning solutions to remove contaminants like moss, algae, and black streaks. Unlike pressure washing, which can damage shingles, soft washing is safe and effective for all roof types.

Yes! As part of our roof washing service, Exoclean’s professionals inspect your roof for signs of damage, such as missing or cracked shingles. This allows you to address any issues early, saving you from costly repairs down the line.

Yes! At Exoclean, we proudly offer a 6-month guarantee for all our professional roof washing services. If any areas of your roof are not fully cleaned, or if algae, moss, or black streaks reappear within six months of your service, we’ll retreat the affected areas at no additional cost.

This guarantee reflects our commitment to delivering exceptional results and ensuring your roof remains clean and protected. When you choose Exoclean, you can trust that we stand behind our work.

Yes! Exoclean offers a rewarding referral program for our roof washing services. When you refer a friend, family member, or neighbor, they’ll receive 10% off their first service. Once they complete their booked service with us, you’ll receive $25 off your next cleaning. Rewards are only granted after the referred customer has used our services. There’s no limit—refer as many people as you’d like and keep saving!

Start referring today! Contact us to learn more.