Gentle Roof Cleaning & Soft Washing in Southern NH

Yes. ACME Pressure Washing uses a low-pressure soft washing process designed specifically for asphalt shingle roofs. We do not use high-pressure washing on shingles because excessive pressure can loosen protective granules and potentially damage the roof. Our soft wash treatment removes organic growth while protecting the integrity of your shingles.

Those black streaks are usually caused by a type of algae commonly known as Gloeocapsa magma. It thrives in humid, shaded conditions and feeds on materials found in asphalt shingles. Professional roof cleaning removes the algae and restores a cleaner, more uniform appearance to your roof.

Yes. Our roof soft washing service treats black algae, moss, lichen, and other organic growth commonly found on roofs in Southern New Hampshire. Heavy moss and lichen may loosen gradually after treatment rather than being aggressively scraped or pressure washed, helping protect the shingles underneath.

No. ACME does not use high-pressure washing on asphalt shingle roofs. Instead, we use a professional soft wash roof cleaning process that relies on specialized cleaning solutions and low pressure to treat algae, moss, and staining without damaging the shingles.

Most residential roof cleaning projects can be completed within several hours, although the exact time depends on the size and pitch of the roof, accessibility, and the amount of algae, moss, or lichen present. We can provide a more accurate estimate after reviewing your property.

Results vary depending on surrounding trees, shade, moisture, roof orientation, and other environmental conditions. Soft washing treats organic growth rather than simply rinsing the surface, which helps keep your roof cleaner longer. Homes surrounded by heavy tree cover may require cleaning more frequently.

There is no single schedule that works for every home. Many homeowners have their roof cleaned when black streaks, algae, moss, or lichen become noticeable. Properties with significant shade, moisture, or nearby trees may develop organic growth faster than roofs receiving more sunlight.

Protecting your property is an important part of our roof cleaning process. Our crew takes precautions around shrubs, flowers, lawns, and other landscaping and carefully rinses surrounding areas as needed during the cleaning proce

Roof cleaning prices depend on several factors, including the size of your roof, roof pitch, accessibility, number of roof sections, and the amount of algae, moss, or lichen that needs to be treated. ACME Pressure Washing provides free, no-obligation roof cleaning estimates so you can know the cost before scheduling the work.

ACME Pressure Washing has been serving homeowners throughout Southern New Hampshire since 1988. We use a roof-safe soft washing process designed to remove black streaks, algae, moss, and lichen without high-pressure cleaning. If your roof is starting to look dark, stained, or covered with organic growth, contact ACME for a free roof cleaning estimate.