Roof Cleaning in Alton

Roof cleaning in Alton to remove moss, algae and debris from tiles, valleys and gutters. Moss holds water against the tiles and blocks the drainage. We clean carefully rather than blasting the surface.

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Why Moss Is a Problem

Moss holds water on the tile long after the rain stops. In winter that water freezes and pushes the tile apart. Clumps also wash into the valleys and gutters and block them. Taking it off protects the tiles and keeps water moving off the roof.

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How We Clean a Roof

We scrape and brush the moss off by hand, clear the valleys and gutters, then treat the roof with a biocide that kills the remaining spores. It carries on working for months. Pressure washing is faster but it strips the tile surface and forces water under the laps.

What We Check While We Are Up There

Cleaning a roof means going over every part of it, so it is a good time to spot cracked tiles, loose ridge mortar and blocked outlets. We photograph anything that needs attention and tell you about it. There is no obligation to have the work done.

Frequently Asked Questions

How often should a roof be cleaned in Alton?

Every three to five years suits most homes. Roofs that sit under trees or face north stay damp longer and grow moss faster, so they need it more often. If you can see green on the tiles from the ground, it is time.

Does roof cleaning damage the tiles?

Not the way we do it. Hand scraping and a biocide treatment leave the tile surface alone. High pressure washing is what causes damage, stripping the granules from concrete tiles and driving water under the laps. We avoid it on tiled roofs.

Will the moss grow back?

Eventually, yes, but the biocide treatment slows it down for several years. Keeping gutters and valleys clear helps, because standing debris holds the moisture moss needs. Most homes go three to five years before it needs doing again.

About us

Prestige Roofing has cleaned roofs across Alton for over 10 years, on everything from small bungalows to large detached homes. Cleaning is one of the few jobs that is genuinely preventative, because it stops small blockages turning into leaks. Every clean includes a free check of the tiles, ridge and valleys.