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Older roof tiles lose water repellency and start to become porous as their factory applied surface coating gradually decays, retaining moisture and encouraging the growth of unsightly moss, green mould and lichens.

Moss root systems have the ability to bore into tiles allowing water into the substrate which gives rise to frost attack and shaling of tiles leading to the need for tiles replacement.

Moss excrete acids, which further weakens the tiles and bleaches out the colour.

Mosses will grow up under the laps and cause capillary attraction of rain water resulting in roof leaks.

When the mosses become large they are dislodged by heavy rain storms resulting in blocked gutters and down pipes.

Roof Cleaning by Pressure Washing will eradicate the moss, lichen and a biocide treatment will retard the return.

The roof of your property and guttering must be kept in a good condition to enable your property to remain weatherproof.

Dilapidated porous roof tiles can lead to expensive repairs to the underlying roofing structure and any decorative finishes which will deteriorate rapidly in damp conditions.