Extensions such as garage conversions will often require supplementary damp proofing to be added through the conversion, as the existing garage typically has a single skin design for walls and floors, which was not manufactured to conform to building regulations for habitable rooms. This damp proofing will need to be added to walls and floors. Furthermore, the roofing of the garage conversion will need water proofing. The damp proofing of the floor of the garage conversion will most likely be achieved 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 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 a few garages, the walls have been damp proofed, but this might need to be updated as part of the conversion to be able to comply with current building regulations. The walls should be damp proofed in order to safeguard the brickwork from rotting slowly as moisture sets in. This is carried out by either employing damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already in the garage. Damp proofing is a 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 |
£1900
£1425
£950
£475
£0
| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in Nelson in May 2026
Requests for Damp proofing quotations in Nelson in May 2026. 0% change from April 2026.
Requests for Damp proofing quotations in Lancashire in May 2026. 0% change from April 2026.
Nelson is known as a town as well as civil parish in the Borough of Pendle in Lancashire, England, having a populace of 28,998 in 2001. It lies 4 miles (6.4 km) north of Burnley on the Leeds and Liverpool Canal.
Nelson - BB9
Enquiry from: Shakila A
Start Date: Immediate
Can you check if the wall has damp? do you provide a free survey?
Nelson - BB9
Enquiry from: Amar R
Start Date: Immediate
Hello I have a property in Nelson Lancashire which suffered from Condensation and now mould started to form at 37 Vaughan Street , Nelson Lancashire Postcode ***. Could you kindly look into this o...
Nelson - BB9
Enquiry from: James A
Start Date: Immediate
penetrating damp in front room
Nelson - BB9
Enquiry from: Laraib R
Start Date: Immediate
Inspection and damp proofing
Nelson - BB9
Enquiry from: Shakeel S
Start Date: Immediate
I have 2 internal walls that have rising damp need someone to come out and have a look and we take it from there
Nelson - BB9
Enquiry from: Mohammad S
Start Date: Immediate
need a free damp survey please are you the property owner: tenant (with permission) how many rooms do you need damp proofing: 1-2 rooms property type: terrace please call to appoint
Nelson - BB9
Enquiry from: Gurjeet K
Start Date: Immediate
one of the room needs mould removing from walls and ceiling are you the property owner: tenant (with permission) how many rooms do you need damp proofing: 1-2 rooms property type: terrace please cal...
Nelson - BB9
Enquiry from: Janet C
Start Date: 1 to 3 months
home owner need damp proof course looked at as having damp issues time scale - immediate please call to appoint *
Nelson - BB9
Enquiry from: Mrs M
Start Date: Immediate
dry rot . I need someone to have a look and give us a written quote please thanks . no call out charges please
Accrington - BB5
Enquiry from: Nusra A
Start Date: Immediate
Bedroom outside wall plaster needs taking off as it is crumbling off and is discoloured looks like,damp but not sure and then either re-boarding or re-plastering
Bury - BL0
Enquiry from: Carl R
Start Date: Immediate
We have a storage cellar that is damp that we would like sorting, and also some damp on the shop floor caused by an external pipe and some broken masonry. We have had a survey done which I can provide...
Hebden Bridge - HX7
Enquiry from: Nicky J
Start Date: Immediate
Hi I require a damp survey of a property I am buying of the cellar to see if it is damp and if it can be tanked
Bury - BL0
Enquiry from: Edward B
Start Date: Immediate
We've just come home from some time away and have noticed three signs of damp: - bumpy external wall in downstairs toilet - wet carpet on bottom step of hallway - patch of white mould along the ...
Rossendale - BB4
Enquiry from: Hannah M
Start Date: Immediate
most issues have been sorted by fixing the roof, but we have some damp coming inside on external facing walls i could do with some advice on how to fix/ see what you could offer? i am generally in th...
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...
Darwen - BB3
Enquiry from: Christopher J
Start Date: Immediate
Free Damp Proof Survey inc. Dry and Wet Rot.
Darwen - BB3
Enquiry from: Jhurgen V
Start Date: Immediate
Damp & Timber report, the report should be detailed in regards to the inspections.
Burnley - BB12
Enquiry from: Anthony C
Start Date: Immediate
Quote for remedial work ie damp inspection/ proofing
Accrington - BB5
Enquiry from: Anela M
Start Date: Immediate
Hello, I’ve got condensation and it’s causing my walls getting wet and black mould on my walls coming through I just want that sorted as it’s just spreading around my room
Bury - BL0
Enquiry from: Magdalena M
Start Date: Immediate
one wall seems to have some black mould it could be condensation. in the lounge are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: ter...
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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.
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.
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.
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