Damp Proofing in Northern Ireland

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Damp Proofing in Northern Ireland

Extensions such as garage conversions will often require supplementary damp proofing to be added as part of conversion, as the existing garage routinely has a single skin design for walls and floors, which was not built to conform to building regulations for habitable rooms. This damp proofing will have 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 by using a damp proof membrane. This membrane can come in either solid or liquid form. The damp proof membrane will be put down either on top of the existing concrete floor, below the new floor, or as part of both, depending on whether the floor will be a solid or a floating floor. In some garages, the walls have been damp proofed, but this might have to be improved as part of the conversion to be able to meet current building regulations. The walls should be damp proofed in order to protect the brickwork from rotting gradually as moisture sets in. This is carried out by either making use of damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already present in the garage. Damp proofing is an important part of the building regulations that the garage conversion should adhere to, and so is it vital to ensure that your garage conversion makes use of suitable damp proofing methods.

Average Damp proofing cost in Northern Ireland

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

Average price per Damp proofing job in 2026

Avg. price low

Avg. price low
£1,125
Avg. price

Avg. price
£1,500
Avg. price high

Avg. price high
£1,725

£1900

£1425

£950

£475

£0

Prices based on actual Damp proofing costs for Northern Ireland, as reported by local LeadsDoWork members.

Damp proofing installation cost in Northern Ireland 2026

Labour cost £1,050
Material cost £375
Waste removal £75
Time frame: 3-5 days

Damp proofing searches in July 2026

Damp proofing Projects in Northern Ireland in June 2026

27,288

Requests for quotations in Northern Ireland in June 2026

0

Requests for Damp proofing quotations in Northern Ireland in June 2026. 0% change from May 2026.

0

Requests for Damp proofing quotations in United Kingdom in June 2026. 0% change from May 2026.

Source: Numbers calculated based on the search volumes in major search engines

Damp proofing searches in counties near Northern Ireland June 2026

Damp proofing near you

Northern Ireland

Northern Ireland is the Irish area of the United Kingdom, with the Republic of Ireland providing the remainder of the island. It comes with a population of just over 1.8 million, plus a population density of 133 people per square kilometre. This population is just 3% of the United Kingdom and 28% of people on the island of Ireland. Northern Ireland’s capital city of Belfast holds the most significant population of around 340,000, while Derry and Lisburn have 100,000 and 45,000 respectively. For all your home improvement projects in Northern Ireland, use reputable specialists to make sure you get a high-quality finish.

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Similar Customer Enquiries for Damp proofing in Northern Ireland

26 Jun

Building work | Damp Proofing

Belfast - BT9

Enquiry from: Bryan M

Start Date: Immediate

Rising damp in entrance lobby. Wall paper peeling off and damp rising about 2 ft up the wall. No evidence of rising damp elsewhere on the ground floor

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17 Jun

Building work | Damp Proofing

Ballymena - BT42

Enquiry from: Kenny K

Start Date: Immediate

raising damp and spray treatment to all wood work

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12 May

Building work | Damp Proofing

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,

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08 May

Building work | Damp Proofing

Enniskillen - BT74

Enquiry from: Tom O

Start Date: Immediate

Exterior wall is discoloured. I am not sure if this is damp related.

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03 Apr

Building work | Damp Proofing

Belfast - BT8

Enquiry from: Michelle D

Start Date: Immediate

Damp proofing course, we will do the replastering so quote me only for a damp proofing course for a detached 4 bedroom house. It needs the damp proofing course all around the premiters of the house. G...

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18 Mar

Building work | Damp Proofing

Belfast - BT7

Enquiry from: Christine D

Start Date: Immediate

Rising damp in the main entrance hallway to the surgery.

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16 Mar

Building work | Damp Proofing

Newry (South Down section) - BT34

Enquiry from: Martin A

Start Date: Immediate

Damp Proof injections on all external walls

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13 Mar

Building work | Damp Proofing

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

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05 Feb

Building work | Damp Proofing

Craigavon - BT62

Enquiry from: Cosmin G

Start Date: Immediate

Check from where water infiltration inside house..

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31 Jan

Building work | Damp Proofing

Newtownabbey - BT37

Enquiry from: Mark K

Start Date: Immediate

Damp showing at the Gable end of the house. Please get me a quote for diagnosis and treatment

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17 Jan

Building work | Damp Proofing

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...

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09 Jan

Building work | Damp Proofing

Omagh - BT79

Enquiry from: Derek L

Start Date: Immediate

damp/ mould on inside of wall are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: detached please call to appoint

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08 Jan

Building work | Damp Proofing

Newry (South Down section) - BT34

Enquiry from: Adrian L

Start Date: Immediate

water getting through window and damp on back wall are you the property owner: owner of the property how many rooms do you need damp proofing: 3-4 rooms property type: terrace please call to appoint

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27 Dec

Building work | Damp Proofing

Omagh - BT79

Enquiry from: Niamh B

Start Date: Immediate

Need a dehumidifier installed in loft due to condensation problem on windows.

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23 Dec

Building work | Damp Proofing

Newry (South Down section) - BT34

Enquiry from: Janet M

Start Date: Immediate

We had a bathroom leak downstairs 8 months after installation. All downstairs floors are ripped up wall damage as well 3 months using dimidifers moisture level.on concrete floors still at 40 per cent ...

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16 Dec

Building work | Damp Proofing

Shildon - DL4

Enquiry from: Akinyemi O

Start Date: Immediate

full damp survey for the property as well as mould and condensation rectification are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: ...

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11 Dec

Building work | Damp Proofing

Portrush - BT56

Enquiry from: Steve R

Start Date: Immediate

there is a damp issue to be sorted on the ground floor of this manor building - in 2 flats would like a quote to be carried out - preferably between 20-dec & 2-jan but can get access at other times ...

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26 Nov

Building work | Damp Proofing

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

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21 Nov

Building work | Damp Proofing

Newtownards - BT22

Enquiry from: Bevin G

Start Date: Immediate

I am looking for a quote to fix rising damp in 3 bedrooms.

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21 Nov

Building work | Damp Proofing

Downpatrick - BT30

Enquiry from: Colin R

Start Date: Immediate

rising damp issue requiring damp proof course are you the property owner: owner of the property how many rooms do you need damp proofing: 3-4 rooms property type: terrace please call to appoint

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FAQs

How can I tell what type of damp I’ve got?

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.

How can I tell if my property has damp?

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.

Why is it important to fix a damp problem?

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!

How quickly can I redecorate my walls after damp proofing has been installed?

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.

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