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Prevent Damp in your home

Prevent Damp

Prevent damp helps to keep your house dry, warm, and free of mould.

Keep it as watertight as possible.

First of all there are a few areas where water can enter your house.

Likewise its important to understand what these areas are.

Above all checks can be done to ensure all is as it should be.

Prevent Damp make External Checks

First of all check your external walls, check for any of the following:

  • First of all are the windows and window frames in good condition?
  • Another sign of rot in wooden windows is gaps around the frames.
  • These could be letting in cold air and damp.
  • Also mortar in brickwork – is it up to scratch?
  • Because mortar joints should not have pieces missing .
  • So this can cause structural weaknesses and penetrating damp.
  • Furthermore does your property have a damp proof course and is it working effectively?
  • Look for a line of plastic in the mortar joint about 150mm above you external ground level.
  • In older buildings this could be a line of bitumen or even slate.
  • Certainly check if any air bricks blocked?
  • Look for bricks with holes in them placed at about 150mm above the external ground level.
  • They should be free from blockages and obstructions to allow air movement through them.


  • First of all are your gutters blocked or broken?
  • Furthermore leaves and debris can collect in gutters causing them to block.
  • Once blocked water overflows and runs down walls.
  • Likewise this creates moss and algae and possibly internal damp patches.
  • Do you have any missing, broken or out of place tiles?
  • Above all check your roof for tiles that may have been pulled of by heavy winds.
  • Is the chimney and its surround in good condition?
  • Flashing around the chimney should be sealed into the chimney and flat over the tiles.
  • Any lifting or damaged flashing should be replaced immediately to stop roof leaks.

It’s also important to be aware that if you have any climbing plants on your house.

They could be hiding some of the above problems.

Finally roots of trees near your home may be damaging your foundations and damp proof courses.

Prevent Damp do Internal Checks

  • Check windows and walls for condensation.
  • Normally you see water drops on windows or cold surfaces.
  • In severe cases you may even experience black mould in places.
  • Kitchens and bathrooms are areas where condensation is most likely to form.
  • Which is due to cooking washing and drying of clothes.
  • If you spot condensation take positive steps to control this.
  • This can be done by installing ventilation systems to control the relative humidity.
  • And using anti mould products to remove mould could stop it occurring again.
  • Is all your plumbing in good condition?
  • Is there any damage or visible cracks or leaks around sinks or toilets?
  • Damp patches across floors and on walls can be leaking or damaged pipes.
  • Damp patches will look like dark areas on walls, floors and even ceilings.
  • Often once the leak has been rectified the damp patch will disappear.
  • If you have had the leak for a long time this may have caused rot within timber.
  • That will require remedial treatment by a professional.


Finally if you spot any problems take steps to dry out the damp quickly.
Where they is any doubt talk to a

Prevent Damp

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