Posted on
December 26th, 2014

How to Stop Damp

Dealing with a damp problem should always start with the proper identification of the issue affecting your home. You may even find that there is more than one kind of damp affecting your property, which will make the problem more complicated and harder to fix. In some of the worst cases, you may even need to consult a specialist damp consultant, builder or surveyor.

There are a few simple steps that you can take to help stop an on-going damp problem such as:

  1. Don’t block permanent ventilation fixtures
  2. Don’t draught proof rooms where there are fuel burning heaters, gas fires or cookers
  3. Don’t draught proof windows and doors in the bathroom or kitchen
  4. Don’t completely block chimneys to stop draughts.

If you have tried these and still find that you have a damp problem, there are still a few DIY options that you can try yourself:

Baseline 8 Tape

Stopping a rising damp problem:

If you are living in a newer home, it will have been built with a damp-proof layer around the base of the house and in the foundations. Older houses were not built with damp coursing and are much more susceptible to rising damp.

First of all, it is useful to know whether your house has previously had a damp-proof course installed, and if so, whether it is working properly. In order to be 100% sure of this, you may need to call in an expert to look at this. Even if your DPC is functioning well, you may still be having problems if the water is somehow traveling around the course and is continuing to move upwards.

  • Remove excess soil

    Remove excess soil from around an existing DPC to ease the pressure caused by unnecessary damp soil. This will help to eliminate any rising damp which may be touching the brick above a DPC, allowing damp soil or ground to touch untreated brickwork.This is sometimes caused by outside groundwork which may have been carried out which changes the outside ground level and / or blocks the ventilation units. This essentially blocks the moisture in which then has nowhere to go except up through the walls or deficient DPC.

  • Remove obstructions

    Remove obstructions from any of the ventilators around the house – much like what is written above, these may have been covered completely by previous groundwork, however they may also be blocked from other debris such as moss and dirt.

  • Replace existing vents

    Replace existing vents with a more modern version. For example, some old houses will have a traditional terracotta or cast iron vent faces which don’t do the job as well as the more modern metal vents which are design specifically to help alleviate dampness in old houses.



Stopping a condensation problem:

Condensation is often a problem in both new and old houses and can be caused by a lack of ventilation to spaces which create a lot of steam or are busy with people for a long period of time.

Fortunately there are some simple ways to stop condensation problems:

Improve ventilation to your room

If you do not have a bathroom or kitchen fan, you should consider getting one installed as these two rooms are the two biggest causes of moisture in a house.

Consider getting a dehumidifier

If you haven’t got one already, these devices plug in to the mains and are specifically designed to dehumidify the air in your house. You may choose to leave this in an area which you know is bad for condensation.

Cavity wall insulation

This may help your condensation problem by stopping the excessive cold spots which build up on any walls. Insulated walls will stop this cold from getting through to the inside of your house, creating condensation on the inside of the house due to the difference in temperatures.


Enviroseal Liquid Membrane

Stopping a penetrating damp problem:

If any water from the outside of your house is finding its way in, you may have a problem with penetrating damp. Penetrating damp often occurs on all
levels of the building, but is more common on higher floors and south-west facing walls.

Identifying why you may have a problem with damp should be the first step towards fixing the problem and you can do the following to help you with the issue:

Check your gutters

There can often be a build-up of debris which has been left over from bad weather and birds which can clog up the guttering, leading to an overflow which can run down the walls and create a damp problem.

Seal the wall

By applying No More Damp’s Enviroseal to the affected areas. This creates a waterproof but permeable boundary which stops any excess water from penetrating the masonry on a building.

Repoint crumbling mortar

This will help to stop moisture from reaching inside the brick work. If left untreated, this can cause a serious problem which is harder to treat than a surface level problem.

Check your cavity walls

If there is no obvious problem visible as it may be a problem which lies within the cavity wall itself. This is usually a job for the pro’s, however it will identify the issue and stop you from spending money trying to fix the problem another way.

Resealing any windows and door frames

This will help to stop any excess moisture or damp from getting inside your property.

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