Free "Does My Roof Need Cleaning?" Quiz

Those streaks are usually Gloeocapsa magma, an algae that feeds on the limestone filler in asphalt shingles — it's cosmetic at first but can shorten shingle life if left untreated.

No — we use a low-pressure soft-wash process instead. High-pressure washing can strip protective granules off asphalt shingles and void your shingle warranty.

Yes — heavily shaded roofs stay damp longer, which is exactly the environment algae and moss need to establish and spread.

It depends on tree cover and shade — heavily shaded, tree-covered roofs may need cleaning every 1-2 years, while sunnier roofs can often go longer between cleanings.

No. It is a free planning tool with no obligation — use it as many times as you like, and nothing is booked until you tell us to book it.

Your result is a planning estimate. We confirm exact pricing with a free on-site visit and send a written, line-item quote within 24-48 hours.

So we can save your estimate and text or email it to you. We never ask for payment information, and you can always call or text (703) 650-5655 directly instead.