Extensions including garage conversions will often require supplementary damp proofing to be installed through the conversion, as the pre-existing garage will often have a single skin design for walls and floors, which was not manufactured to be in accordance with building regulations for habitable rooms. This damp proofing will need to be added to walls and floors. Additionally, the roofing of the garage conversion will require water proofing. The damp proofing of the floor of the garage conversion will most likely be achieved by utilising 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 if the floor will be a solid or a floating floor. In some garages, the walls will have already been damp proofed, but this may need to be updated as part of the conversion in order to adhere to current building regulations. The walls should be damp proofed in order to protect the brickwork from rotting gradually as moisture sets in. This can be performed by either applying damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already in the garage. Damp proofing is an important part of the building regulations that the garage conversion should 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 |
|---|---|
| Avg. price | Avg. price |
| Avg. price high | Avg. price high |
£3000
£2250
£1500
£750
£0
| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in East Midlands in May 2025
Requests for Damp proofing quotations in East Midlands in May 2025. 0% change from April 2025.
Requests for Damp proofing quotations in United Kingdom in May 2025. 0% change from April 2025.
Daventry - NN11
Enquiry from: Alexandru I
Start Date: Immediate
level 3 building survey has raised concerns regarding both the solid ground floor and the suspended timber floor structure at first floor level. specifically, the report notes: • potential absence ...
Nottingham - NG16
Enquiry from: Allan C
Start Date: Immediate
please can you give me a free quote for damp repair. please contact rachel on *** for access. my number is ***43. are you the property owner: owner of the property how many rooms do you need damp pro...
Skegness - PE25
Enquiry from: James C
Start Date: Immediate
Entrance hall has damp along wall about 1mtr from front door and also floorboards damp by front door which may be 2 seperate issues.
Ripley - DE5
Enquiry from: Lubica W
Start Date: Immediate
looking for a quote for a damp proof injection course
Northampton - NN1
Enquiry from: Bentley V
Start Date: Immediate
cellar has been tanked to certain degree, but still have black mould on ceiling are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: te...
Kettering - NN14
Enquiry from: Addassa F
Start Date: Immediate
The main things I am hoping to gain from the visit and quote are: Identification of the source of the damp Recommended solutions to resolve it A clear and detailed quote including all associated...
Leicester - LE3
Enquiry from: Guru S
Start Date: Immediate
Rising damp .need survey and solutions
Leicester - LE7
Enquiry from: Hasmita T
Start Date: Immediate
we get condensation on the windows and corners of every room feels damp and has black mould. as it’s a little warmer out it’s better but it’s worse in the winter. i would like to know what type ...
Leicester - LE7
Enquiry from: Hasmita T
Start Date: Immediate
We are getting damp which turns black in the bedrooms and living room . We are a bungalow and get condensation on the windows so have bought a dehumidifier which does help a little. Will value your ...
Wellingborough - NN8
Enquiry from: Nita G
Start Date: Immediate
Im looking for a quote on some Rising Damp and Rear Rendered Surfaces work please. Ideally looking for a full timber and damp report to show the cause and remedial works required, along with an est...
Swadlincote - DE11
Enquiry from: Dwain M
Start Date: Immediate
kitchen diner and laundry/wash room 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
Kettering - NN14
Enquiry from: BOBBY D
Start Date: Immediate
WALL CRUMBLING OUTSIDE the front of the shop under next to the front window damp on ceilings
Wellingborough - NN8
Enquiry from: Robin R
Start Date: Immediate
Hello We'd love to have a chat about damp issues in our building which have been on-going for some time. It’s an old converted factory and there are a number of things to fix! We work from home so...
Nottingham, Sutton-in-Ashfield - NG17
Enquiry from: Julie R
Start Date: Immediate
I have some areas that may be damp
Nottingham - NG10
Enquiry from: Rhian M
Start Date: Immediate
Could I get an opinion and quote please around possible damp - tide marks on the wall but it seems to come and go.
Nottingham - NG13
Enquiry from: Lindsay C
Start Date: Immediate
hello, we have poorly installed damp proof course in a 3 meter section of garage conversion. we would like damp proof rods installed. please can you quote (we are langar, ng139hl) are you the property...
Sleaford - NG34
Enquiry from: Andy H
Start Date: Immediate
there seems to be an issue with damp on the outside facing wall of my semi-detached. i am unsure of what work would need to be carried out so would appreciate a quote. are you the property owner: owne...
Leicester - LE7
Enquiry from: Helen M
Start Date: Immediate
Mould in upstairs bedroom, possible damp in downstairs property. Old property
Belper - DE56
Enquiry from: James S
Start Date: Immediate
Exterior back wall and right side of window, in the large room on the left, upstairs, where plaster is flaking: Remove contaminated plaster Apply thermal board 3 exterior walls in medium bedroom,...
Matlock - DE4
Enquiry from: Stefan H
Start Date: Immediate
I have some damp penetrating into corners of rooms on the higher level of my detached house. Are you able to take a look and provide a quote please?
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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.
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.
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