Damp Proofing
Londonderry - BT47
Enquiry from: Osmond M
Start Date: Immediate
Damp proof survey to see what the problem is
Extensions such as garage conversions will usually require additional damp proofing to be installed as part of conversion, as the pre-existing garage routinely has a single skin design for walls and floors, which was not built to be in accordance with building regulations for habitable rooms. This damp proofing will need to be put into walls and floors. Furthermore, the roof of the garage conversion will require water proofing. The damp proofing of the floor of the garage conversion will in most cases be achieved by utilising a damp proof membrane. This membrane can come in either solid or liquid form. The damp proof membrane will be placed down either on top of the pre-existing concrete floor, underneath the new floor, or as part of both, depending on whether the floor will be a solid or a floating floor. In a few garages, the walls have already been damp proofed, but this might need to be improved as part of the conversion to be able to adhere to current building regulations. The walls will need to be damp proofed to be able to protect the brickwork from rotting slowly as moisture sets in. This can be accomplished by either implementing damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already in the garage. Damp proofing is an integral part of the building regulations that the garage conversion will need to comply with, therefore is it vital to make sure that your garage conversion makes use of appropriate damp proofing methods.
The average cost of Damp proofing is £1500. Costs vary based upon the materials and the organisation selected. The upper price range can be as high as £1725. The material costs are in general about £375
| Avg. price low | Avg. price low |
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| Avg. price | Avg. price |
| Avg. price high | Avg. price high |
£1900
£1425
£950
£475
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| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
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Londonderry - BT47
Enquiry from: Osmond M
Start Date: Immediate
Damp proof survey to see what the problem is
Londonderry - BT48
Enquiry from: Helen M
Start Date: Immediate
Londonderry - BT47
Enquiry from: Ruby H
Start Date: Immediate
Damp in hall and bedroom
Limavady - BT49
Enquiry from: Clare M
Start Date: Immediate
Have a crack in a wall below my front window, In my living room. I think it is cracked all the way through
Coleraine - BT51
Enquiry from: Gordon C
Start Date: Immediate
Several points around the house which look like there may be a damp problem - inspection and advice required
Portstewart - BT55
Enquiry from: Gregg R
Start Date: Immediate
We are currently experiencing damp penetrating in two areas of our house: 1. Through a wall at the the front of our house. The area is under large bay window 2. In the corner of our porch, above a s
Londonderry - BT48
Enquiry from: Michael M
Start Date: Immediate
Rising damp however main issue is penetrating damp causing mould at windows at front of house
Magherafelt - BT45
Enquiry from: Marian K
Start Date: Immediate
Damp on bedroom wall think it cuming n from outside wall
Property: detached
Londonderry - BT47
Enquiry from: Barry T
Start Date: Immediate
Have small patch on front porch and conservatory also when it rains water comes through the kitchen extension
Property: detached
Londonderry - BT47
Enquiry from: Susan B
Start Date: Immediate
Horiffic musty smell in bungalow and woodlice
Londonderry - BT47
Enquiry from: Susan B
Start Date: Immediate
I moved into a NIHE bungalow in Feb 2025 musty smell in the house is horiffic you can smell it the minute you walk in the gate I tried everything to get rid of it this is also affecting my breathing a
Londonderry - BT48
Enquiry from: Rosaleen S
Start Date: Immediate
Gable wall is damp and getting worse. I need it surveyed to discover the problem and the solution
Coleraine - BT51
Enquiry from: John P
Start Date: Immediate
Wall in bungalow bedroom feels wet from time to time, wetness is lower part of wall. Looking for a qualified person to inspect and recommend solutions as necessary
Portstewart - BT55
Enquiry from: Maud F
Start Date: Immediate
Tenants say there is mould . Could you advise re putting this right
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Signs of rising damp tend to be close to the ground, usually no higher than a metre. It usually works its way up walls in horizontal lines. Penetrating damp usually develops in patches and can often be much higher up. For more advice, speak to a damp proofing professional.
You should make sure that all signs of damp have gone before you redecorate your walls. If you want to paint your walls with a water-permeable emulsion paint, you can usually do this after 1 or 2 months. For other types of decoration you should wait longer.
Damp is a serious problem, particularly if you live in an old property, because it can lead to structural damage. This will cost you big money and could be very dangerous, to yourself and the property. Take damp seriously and get it inspected and resolved as soon as you discover it!
There are a few visible signs of damp, although it often goes undetected. However, in older or empty properties, this made become detectable through its smell. These include peeling paint and wallpaper, crumbling plaster, mould growth, black spots or spores on walls and ceilings, and rotting skirting boards and flooring.
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