Soft wash or pressure wash your roof?

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Short answer: Your roof gets a soft wash, never high pressure. High pressure strips the protective granules off shingles, which is damage that doesn't grow back and can shorten the life of the roof over time, well beyond just the staining it was meant to clean.

Why granules matter

Shingle granules protect the roof from UV rays and hold the shingle together over time. A pressure washer aimed at a roof can blast those granules right off, and once they're gone, they're gone. That's the single biggest reason roofs are never pressure washed by a crew that knows what it's doing.

A roof that's lost a meaningful amount of granules often looks patchy or uneven in color from the ground, which is a different look than the black streaking algae causes and isn't something a cleaning can reverse.

What a soft wash does instead

A cleaning solution is applied at low pressure, breaks down the algae and grime, and rinses away without the force that damages granules or shingle material. It works on the black streaking algae itself rather than trying to blast staining off a surface that isn't built to take a direct hit.

That approach takes a bit more time than a quick pressure blast, but it's the only method that cleans the roof without trading one problem, the staining, for a worse one, permanent surface damage that shows up later.

It's not just shingles

Tile, metal and flat roofs all get the same soft wash approach for the same reason: keeping the cleaning method gentle enough not to damage the roofing material, whatever it's made of and however it's shaped.

What's protected during the visit

Landscaping around the house is wet down before the wash and rinsed after, since roof runoff reaches the ground, and pets stay inside for the visit while the crew works overhead.

Gutters and downspouts are treated as part of the same runoff path, so the crew accounts for where the rinse water is headed rather than letting it pool against the foundation.

What to ask before you book

Soft washing is the method built to clean a roof without damaging what's underneath the staining. It's worth confirming that whoever cleans your roof uses it, since high pressure on shingles, tile or metal carries a real risk.

In Volusia County

Shingle roofs make up 77% of Volusia County's housing stock, based on county property records, with tile, metal, flat and other materials rounding out the rest. Every one of those roof types, at every one of the county's 235,236 homes, gets the same soft wash rather than high pressure applied to it.

Questions people ask

Isn't pressure washing faster?

It can be, but speed isn't worth stripping granules off shingles or risking cracked tile. Soft washing takes the time the roof actually needs to be cleaned safely.

Does soft washing remove the black streaks completely?

It removes the algae causing the staining effectively. How much visible discoloration remains can depend on how long the growth had been there before cleaning started.

Is soft washing safe for a metal roof?

Yes, the same low-pressure cleaning solution approach is used across shingle, tile, metal and flat roofs without changing the underlying method.

Will soft washing shorten my roof's lifespan?

It's the opposite: soft washing is the method that avoids the granule loss and material damage high pressure can cause, which helps protect the roof's lifespan rather than shorten it.

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