Extensions such as garage conversions will usually require additional damp proofing to be installed through the conversion, as the pre-existing garage typically 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 need to be put into walls and floors. In addition, the roofing of the garage conversion will need water proofing. The damp proofing for the floor of the garage conversion will in most cases be achieved by by using a damp proof membrane. This membrane is available in either solid or liquid form. The damp proof membrane will be put down either on top of the pre-existing concrete floor, underneath the new floor, or as part of both, depending on if the floor will be a solid or a floating floor. In some garages, the walls have been damp proofed, but this might need to be updated as part of the conversion to be able to meet current building regulations. The walls will need to be damp proofed to be able to safeguard the brickwork from rotting slowly as moisture sets in. This can be performed 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 will need to comply with, therefore is it necessary to make sure that your garage conversion incorporates 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
| Avg. price low | Avg. price low |
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| Avg. price | Avg. price |
| Avg. price high | Avg. price high |
£1900
£1425
£950
£475
£0
| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in Greater London in October 2024
Requests for Damp proofing quotations in Greater London in October 2024. 0% change from September 2024.
Requests for Damp proofing quotations in United Kingdom in October 2024. 0% change from September 2024.
Hello and welcome to my page. We are a Family run building business with over 20 years in the building industry. We offer a verity of services this includes: Damp proofing specialists, Bricklaying Landscaping Groundwork’s/ drainage Roof repairs Poi...
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The Hive Efficiency Group supply and install a range of products to both residential and commercial properties, designed to assist in making them more energy efficient and maintenance free for many years to come. From thermally effiecient wall c...
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Bishop's Stortford - CM23
Enquiry from: James D
Start Date: Immediate
the main issues are dampness in downstairs bathroom and second floor bathroom, as well as potentially the living room. there is also ceiling damage and staining in the downstairs cupboard due to a pos...
Ashford - TW15
Enquiry from: Marilyn T
Start Date: Immediate
I have a patch of slightly wet wall, I think the DPC has been damaged after gas fitter fitted gas pipe along the external wall where the wetness has appeared inside as this wetness, I don't think, was...
London - N9
Enquiry from: Denise T
Start Date: Immediate
Bedroom has mould on an outside wall
Brentwood - CM14
Enquiry from: Lauren B
Start Date: Immediate
We believe we have a damp problem in our house on the ground floor, and various areas of mould in the house. We would like to discuss how to solve this.
London - SE12
Enquiry from: ANDREW G
Start Date: Immediate
Property is 9 New Buildings, FROME. ***. Survey and recommended treatment for damp and wood beetle damage highlighted on house buyers survey. Property is currently empty and under offer - keys availab...
London - N9
Enquiry from: Kevin C
Start Date: Immediate
Damp issue chimney breast 3m off the ground. Garage recently lead flashed against gable end below height if damp. Fireplace sealed 4 years ago and chimney not capped.
Brentwood - CM14
Enquiry from: Jo M
Start Date: Immediate
My house has a damp smell
Ashford - TW15
Enquiry from: Christina B
Start Date: Immediate
rising damp on the right side of the building near the front door are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: terrace please c...
Harrow - HA3
Enquiry from: PRAFUL P
Start Date: Immediate
I* have damp not sure rising damp or condensation . It is understair case in a store the rest of floor been fitted with under floor heating . Need the treatment as well as filling up with concrete
Staines-upon-Thames - TW18
Enquiry from: Saroj P
Start Date: Immediate
Damp course proofing in bathrooms
Wembley - HA9
Enquiry from: Katharine R
Start Date: Immediate
mould on bedroom wall need this removed are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: semi detached please call to appoint
Thornton Heath - CR7
Enquiry from: Myrna K
Start Date: Immediate
Damproofing. I. Bathroom and kitchen
Staines-upon-Thames - TW18
Enquiry from: Vicky K
Start Date: Immediate
Hi there...I'm in the process of buying this property. Damp has been flagged up on the survey which has my concern. I was wondering if you could do a survey and quote for the potential cost? Kindest ...
Brentwood - CM13
Enquiry from: Debbie B
Start Date: Immediate
Penetrative damp on inside of an external wall. Plaster bubbling and crumbling
Thornton Heath - CR7
Enquiry from: Myrna K
Start Date: Immediate
Damproofing. I. Bathroom and kitchen
Bishop's Stortford - CM23
Enquiry from: Will H
Start Date: Immediate
Good morning, I am buying a property at 27 Sidney Terrace at Bishop's Stortford. A damp survey has identified an area on an ezternal wall that has been repointed with the wrong materials and needs ...
Staines-upon-Thames - TW18
Enquiry from: Stephanie T
Start Date: Immediate
We have a problem with our outside walls and window with condensation I think. Identification of the problem and then quote for any works to fix the problem
Thornton Heath - CR7
Enquiry from: Myrna K
Start Date: Immediate
Damproofing. I. Bathroom and kitchen
Staines-upon-Thames - TW18
Enquiry from: Stephanie T
Start Date: Immediate
We have a problem with our outside walls and window with condensation I think. Identification of the problem and then quote for any works to fix the problem
Thornton Heath - CR7
Enquiry from: Myrna K
Start Date: Immediate
Damproofing. I. Bathroom and kitchen
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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!
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.
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.
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