Extensions such as garage conversions will typically require extra damp proofing to be added as part of 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 should be put into walls and floors. In addition, 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 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 will have already been damp proofed, but this might need to be updated as part of the conversion to be able to adhere to current building regulations. The walls will need to be damp proofed to be able to protect the brickwork from rotting slowly as moisture sets in. This can be performed by either utilising 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 necessary 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 |
£3000
£2250
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| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in Wellingborough in May 2026
Requests for Damp proofing quotations in Wellingborough in May 2026. 0% change from April 2026.
Requests for Damp proofing quotations in Northamptonshire in May 2026. 0% change from April 2026.
The market town of Wellingborough can be found in Northamptonshire along with a population of 49,087. The bigger borough area consists of 75,000. The town widened rapidly from 26,000 to 60,000 within the 60s and 1970s which means a lot of brand new housing was needed to take care of the influx of inhabitants. For all home developments you're thinking of in Wellingborough, make sure you exclusively use vetted and respected tradespeople in the area to get the best price in addition to a good quality of work.
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 ...
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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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Wellingborough - NN8
Enquiry from: Rebecca T
Start Date: Immediate
Please look out for all damp areas
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 estim...
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...
Wellingborough - NN8
Enquiry from: Atiq M
Start Date: Immediate
box room had been painted with anti mold paint a couple of times but the mold keeps coming up. Please advise if you can resolve this issue; and when you can visit the home to have a look.
Wellingborough - NN8
Enquiry from: Rahel A
Start Date: Immediate
can send a survey report if you can provide your email address
Wellingborough - NN8
Enquiry from: Stephen S
Start Date: Immediate
Bedrooms suffer with condensation and damp due to no air vents in the windows and no air bricks etc, mould is penetrating in the bedrooms and this needs attention
Wellingborough - NN8
Enquiry from: Amrit B
Start Date: Immediate
There seems to be black mold on the kitchen wall. That I need looked at asap please.
Wellingborough - NN8
Enquiry from: Tamsin B
Start Date: Immediate
Basement damp proofing. Currently has a concrete membrane (I think), appears to be a damp proof membrane. However, smells damp and damp appears to be climbing the walls.
Wellingborough - NN8
Enquiry from: Chetan P
Start Date: Immediate
Black spot mould present to several areas around the property caused by condensation Rising damp causing some walls to become moist and discoloured
Wellingborough - NN8
Enquiry from: Bentley V
Start Date: Immediate
damp around ground floor bay windows and front entrance. 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 ap...
Wellingborough - NN8
Enquiry from: Theresa F
Start Date: Immediate
damp in kitchen, middle bedroom, sitting room & front room, small areas. are you the property owner: owner of the property how many rooms do you need damp proofing: 3-4 rooms property type: terrace ...
Wellingborough - NN9
Enquiry from: Lauren F
Start Date: Immediate
Looking to confirm the famo and work out a course of correction
Wellingborough - NN8
Enquiry from: Nauroze B
Start Date: Immediate
repair to damp/leak on bedroom ceiling. 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
Wellingborough - NN8
Enquiry from: Frances M
Start Date: Immediate
small area of rising damp in conservatory in the the corner 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 c...
Wellingborough - NN8
Enquiry from: Annie T
Start Date: Immediate
Need a damp survey for renovation property ASAP. There is damp but need to know why.
Wellingborough - NN8
Enquiry from: Ernie M
Start Date: Immediate
there is rising damp in the house and i am looking at free quotations for the work to be carried out. are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 ro...
Wellingborough - NN8
Enquiry from: Mick B
Start Date: Immediate
we have damp problem on one wall on the lower level. repair and replaster
Wellingborough - NN8
Enquiry from: Mick B
Start Date: Immediate
we have damp problem on one wall in our club. damp is coming through from the outside making the plaster on the inside discolour and bubble are you the property owner: tenant (with permission) how ma...
Wellingborough - NN8
Enquiry from: Dennis S
Start Date: Immediate
I've recently moved in,the home buyers report suggests damp proofing needs looking at as it's blown some plaster in the kitchen. I'm having a new kitchen put in at the end of march so would be looki...
Wellingborough - NN8
Enquiry from: Mick B
Start Date: Immediate
we have damp problem on one wall on the lower level. repair and replaster
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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!
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.
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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