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Cleaning Felt Shingles

Maintenance

Cleaning Felt Shingles

After a time, your felt shingles will start to age - a natural process that sees a change in colour and often take on a green tinge of either moss, algae or both. If, like me, you want to keep your garden building looking as good as possible it will be necessary to spend a bit of time cleaning the felt shingles.

This process is probably only required once every four or five years, but think of it as time well spent. Not only will it get the shingles looking far tidier and fresh, it will also ensure longer life. A build up of moss will eventually cause the grit and underlying fibres of the felt to deteriorate as the root system buries  itself  into the textile. Long term and the felt will give up and in extreme cases fall apart.

So, what are the options for cleaning the felt shingles ?

  1. A stiff brushingLight infestastions can be dealt with by giving the roof a good brushing with a stiff brush. This should loosen the moss and make it easy to sweep the debris away.
  2. Chemical ApplicationFor heavier build ups, you could try any of the  proprietary brands offering a moss killer. Application will depend on each individual product, read the label to establish how to achieve the best results. Some suppliers will also offer a chemical application that once your roof is clear, will help prevent the re-growth.
  3. Pressure WashAlthough this method can prove very affective you have to be very careful not to go over board and start damaging the felt itself. Start with gentle pressure and only increase where necessary on stubborn areas. Work from the top down so as not to risk getting the water jet under the shingle.

In all cases, if working on the roof pay attention to your safety. The pitch of the roof and algae can make this a dangerous environment to operate. Wear sensible  footwear and never take risks by over stretching. Always maintain good balance and two firm points of contact with the roof.

Here is a recently cleaned roof by pressure washer - the next job will be to re-apply the wood preserve.

Cleaning Felt Shingles

Author - Martin Corby
Posted - 01 May 2014

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