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.
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
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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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Welcome to Heatseal Insulation Ltd We are National Loft insulation and Damp Proofing specialists covering most of the UK. Our objective is to provide an outstanding & reliable service to all our customers offering the latest technology to the Dome...
Good advice, clear understanding of the problem and solution
Chester le Street - DH3
Enquiry from: Ian D
Start Date: Immediate
Full Damp proof survey on the property
Antrim - BT41
Enquiry from: Darren S
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I'm looking for a damp survey to be conducted after receiving the survey report from a pending house purchase
Londonderry - BT47
Enquiry from: Osmond M
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Damp proof survey to see what the problem is
Ballymoney - BT53
Enquiry from: REBECCA K
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Find cause damp in lounge
Londonderry - BT48
Enquiry from: Helen M
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Ballymena - BT42
Enquiry from: Harry M
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We would like a quote for a damp survey in our bungalow as we have a suspicion we may have a dampness below the floor in either the bathroom or kitchen
Londonderry - BT47
Enquiry from: Ruby H
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Damp in hall and bedroom
Newry (South Armagh section) - BT35
Enquiry from: Marie M
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Paint peeling on one wall
Belfast - BT9
Enquiry from: Bryan M
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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
Ballymena - BT42
Enquiry from: Kenny K
Start Date: Immediate
Raising damp and spray treatment to all wood work
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
Enniskillen - BT74
Enquiry from: Tom O
Start Date: Immediate
Exterior wall is discoloured. I am not sure if this is damp related
Belfast - BT8
Enquiry from: Michelle D
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Damp proofing course, we will do the replastering so quote me only for a damp proofing course for a detached (address removed) . It needs the damp proofing course all around the premiters of the house
Belfast - BT7
Enquiry from: Christine D
Start Date: Immediate
Rising damp in the main entrance hallway to the surgery
Newry (South Down section) - BT34
Enquiry from: Martin A
Start Date: Immediate
Damp Proof injections on all external walls
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
Craigavon - BT62
Enquiry from: Cosmin G
Start Date: Immediate
Check from where water infiltration inside house
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
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
Omagh - BT79
Enquiry from: Derek L
Start Date: Immediate
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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!
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.
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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