Recognising Rising Damp

Recognising Rising Damp In London & Berkshire:

The main indicator of rising damp within a property is any damage that is contained within the first meter from the floor up. Other characteristics found within the damage are explained below.

Discolouration of plasterwork and the interior walls:

It is usually easier to spot rising damp on walls that are painted rather than papered, because groundwater is not clear like drinking water it will leave behind a discoloured watermark. Plaster and paint will appear discoloured and be crumbling from the bottom of the wall with a tidemark about a meter up from the base of the wall.

On papered walls, the wallpaper may peel away at the bottom of the wall. On inspection if you feel a crunchy texture behind the paper then you can almost guarantee you have rising damp. The crunchy, granulated texture is created from salt deposits after the groundwater, which was absorbed into the wall, has evaporated.

    Rotten & Warped Skirting Boards:

    Rotten & warped skirting boards are an undeniable classic sign of rising damp. You may not notice the damage in this area at first, you might see nails are beginning to rust, become aware of the little round holes associated with woodworm or even see beetles running across the wood.

    You should take any damage to this area very seriously as wood rot can be a damaging side effect of rising damp and requires prompt treatment. You can find more information on timber infestation in the ‘Timber Treatment’ section.


    Salty Tidemark:

    Groundwater is absorbed upwards into the brickwork fighting against gravity, typically at around 1 to 1.5 meters in height gravity prevails and the damp doesn’t rise any further. A certain amount of evaporation occurs were the damp ends and the dry part of the wall begins and this is were the tell tale salty tidemark is apparent indicating a problem with rising damp.

    Typically there will be a discoloured watermark covering the area underneath the salty tidemark, and there may well also be algae and/or fungus growing in this area. Mortar and cement tends to crumble away and pile up at the joining of the wall to the ground, thus exacerbating the damp problem.

    Rising damp is a very serious damp problem and should never be ignored. If you have found something similar to the problems mentioned above and live in London or Berkshire, then please contact The Damp Guys for a damp survey as soon as possible  Call now

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