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How can I get rid of moss on the roof?

John Conlin / 05 September 2017

Chartered surveyor John Conlin tackles the problem of mossy tiles.

Red brick rural cottage with a roof covered in moss.
While it may add some rustic charm, moss on a roof can cause problems including blocked gutters.

Question

One slope of our clay tiled roof always has moss growing on it which is then dislodged, rolls down and blocks the gutter. 

I have tried spraying weedkiller without success – is there a solution?

How to find a reliable builder.

Answer

Copper salts will deter the growth of moss. Have strips of copper secured by tucking the ends beneath the overlap between rows of tiles near the top of the roof leaving as much of the strip as possible exposed. 

Rain will pick up and carry copper salts in solution down the roof. 

How to fund home improvements.

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The opinions expressed are those of the author and are not held by Saga unless specifically stated.

The material is for general information only and does not constitute investment, tax, legal, medical or other form of advice. You should not rely on this information to make (or refrain from making) any decisions. Always obtain independent, professional advice for your own particular situation.