Extensions including garage conversions will often require extra damp proofing to be added during the conversion, as the pre-existing garage will often have a single skin design for walls and floors, which was not manufactured to conform to building regulations for habitable rooms. This damp proofing will have to be added to walls and floors. Moreover, the roofing of the garage conversion will need water proofing. The damp proofing of the floor of the garage conversion will often be performed by employing 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 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 adhere to current building regulations. The walls will need to be damp proofed in order to safeguard the brickwork from rotting slowly as moisture sets in. This can be done by either utilising damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls already present in the garage. Damp proofing is a part of the building regulations that the garage conversion will need to adhere to, therefore is it necessary to make sure that your garage conversion employs 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
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| Avg. price | Avg. price |
| Avg. price high | Avg. price high |
£3000
£2250
£1500
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| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in North West in March 2025
Requests for Damp proofing quotations in North West in March 2025. 0% change from February 2025.
Requests for Damp proofing quotations in United Kingdom in March 2025. 0% change from February 2025.
We are a company that specialises in Damp Proofing & Insulation. We have a 100% success rate in resolving damp issues connected to any form of damp. We can also offer the latest solutions to condensation. We offer a FREE, NO OBLIGATION damp ...
please send me a copy of invoice with vat details
At Home Energy Save GB Ltd we are specialists in all fields of damp proofing and energy efficiency within the home. Whether your problem is loft condensation, rising damp, penetrating damp, black mould or simply heat loss then we can help. We sp...
Phone consultant was lovely and polite. Barry came out to review our home and was very professional, friendly and gave ...
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
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...
all good
Bolton - BL4
Enquiry from: Stephanie W
Start Date: Immediate
can you please do a free quote for the landlord as there is damp in the house especially in the downstairs walls.
Prescot - L34
Enquiry from: Michael B
Start Date: Immediate
Survey report came back saying moderate levels of damp at lower levels and higher in the corners. Outside block paving is to high and goes all round the house. ( double fronted semi )
Rossendale - BB4
Enquiry from: Jack T
Start Date: Immediate
We have damp problems in our top 2 bedrooms and would like a damp survey and then potentially the work carrying out. I believe you will give us a free damp survey and then a no obligation quote, if t...
Leigh - WN7
Enquiry from: Lorin M
Start Date: Immediate
Good morning, I am not sure this is the right section for my need, I have kitchen extension at the back of the house (terraced house) made of single skin walls and have been advised that the grou...
Liverpool - L12
Enquiry from: Becky C
Start Date: Immediate
I need that to be assessed as I am not sure. Do you offer a free survey?
Leigh - WN7
Enquiry from: James F
Start Date: Immediate
I’m in the process of purchasing a property, and my survey has flagged potential damp, timber and steal beam issues, particularly affecting the subfloor. I’m looking for a specialist to assess the...
Barrow-in-Furness - LA14
Enquiry from: Paul A
Start Date: Immediate
Rising damp treatment in the reception, porch and damp patch treatment. Request a survey.
Liverpool - L6
Enquiry from: June D
Start Date: Immediate
Dampness patches in parts of the cellar walls
Stockport - SK7
Enquiry from: Andrew M
Start Date: Immediate
i believe i may have damp in corners of a particular reception room at the property which has presented itself after rainfall. i would like this appropriately assessed and rectified. thanks are you th...
Ellesmere Port - CH66
Enquiry from: Steve W
Start Date: Immediate
rising damp in party wall 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
Rochdale - OL11
Enquiry from: Brent C
Start Date: Immediate
Damp course around fireplace
Warrington - WA2
Enquiry from: Susan R
Start Date: Immediate
lounge wall wall paper is flaking are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: terrace please call to appoint
Barrow-in-Furness - LA14
Enquiry from: Michael M
Start Date: Immediate
Hi, we have been getting damp in our living room mainly underneath our windows, I was wondering if it was possible for you to come out and have a look and advise what you recommend to stop the damp co...
Darwen - BB3
Enquiry from: Christopher J
Start Date: Immediate
Free Damp Proof Survey inc. Dry and Wet Rot.
Cheadle - SK8
Enquiry from: Italia C
Start Date: Immediate
I have a flat that has severe rising damp pretty much over the whole flat. We have been advised by a contractor that a specialist should take a look at it and advise as he believes damp proof inject...
Wirral - CH63
Enquiry from: Ian N
Start Date: Immediate
refurbishment of kitchen damp course new floor
Darwen - BB3
Enquiry from: Jhurgen V
Start Date: Immediate
Damp & Timber report, the report should be detailed in regards to the inspections.
Thornton-Cleveleys - FY5
Enquiry from: Chloe G
Start Date: Immediate
Damp on front 2 bedroom walls
Prescot - L35
Enquiry from: Megan F
Start Date: Immediate
Full external wall is damp on stair case and in bedroom, rising damp near front door.
Wigan - WN6
Enquiry from: Amand A
Start Date: Immediate
Quote please to determine what work will need carrying out. We bought the property two years ago and only realised when we moved in that it looked damp.
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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.
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.
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!
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