DAMP PROOFING HELP & ADVICE
Here we outline our top DIY tips for solving damp problems in your home. We look at the most common causes of damp, including penetrating damp, condensation, DPC issues and more.
Look around your house
Are there defects, cracks or blockages through which water could be getting in?
This could be the cause of a penetrating damp problem.
Penetrating damp is caused by defects within the building or rainwater goods, allowing water to pass through the roof or walls and into the property. A water mark on an internal wall would be a sign of penetrating damp, and will usually indicate the point of the defect, so check externally in the same area as the watermark for any obvious problems.
Check the downpipes, hoppers and gutters for any blockages including moss, leaves, dead birds etc. Remove the blockage and you might find that this resolves the damp problem!
If the rainwater goods are old, they may need replacing
Ensure that any cracks or voids in the walls or around window or door frames are fixed.
Have a good look at the roof. Are there any loose slates? Problems with the roof are a common cause of penetrating damp
Are there any signs of damp mould on the internal walls?
Are the walls cold and damp to the touch?
This could be a sign of condensation.
Condensation occurs when there is excessive water vapour held within the air of the house. When water vapour cools due to contact with cold walls, surface condensation forms, which will make the walls damp and can lead to black spot mould forming which can be hazardous to health, as well as producing an unpleasant dank and musty smell.
Use extractor fans in the kitchen and bathrooms
When using the kitchen or bathroom keep the doors shut and extractor fan on so that excessive water vapour does not go into other parts of the house
Consider installing humidistats within areas with high humidity
Ensure washing machines and dryers are adequately plumbed in according to the manufacturer's instructions.
Do the ground floor walls exhibit damp patches and salt bands to about 1 metre from the floor?
The damp proof course (DPC) could be bridged by high external ground levels.
Removing the high ground levels will stop further rising and penetrating damp, but ground salts are hygroscopic and although the wall will no longer be receiving moisture from the high ground, the walls may still be damp due to the moisture received by the salts that still remain in the wall. Advice should be sought from a damp-proofing specialist.
Older properties may not have a damp proof course installed.
If this is the case, we recommend installation of our Newtonite Damp Proofing System, which includes an injectable DPC, Newton 804-DPC, and a number of damp-proofing membranes such as Newton 805 Newlath, which will isolate the wall finishes from moisture still in the wall as the wall dries out post 804-DPC application.