Extensions such as garage conversions will usually require supplementary damp proofing to be installed through the conversion, as the pre-existing garage routinely has a single skin design for walls and floors, which was not built to be in accordance with building regulations for habitable rooms. This damp proofing will need to be put into 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 often be achieved by employing a damp proof membrane. This membrane is available in either solid or liquid form. The damp proof membrane will be placed down either on top of the pre-existing concrete floor, underneath 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 may have to be improved as part of the conversion to be able to adhere to current building regulations. The walls should be damp proofed to be able to protect the brickwork from rotting gradually as moisture sets in. This can be accomplished by either using damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already in the garage. Damp proofing is an integral part of the building regulations that the garage conversion will need to comply with, therefore is it important to make sure that your garage conversion employs 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 |
|---|---|
| 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 South West in May 2026
Requests for Damp proofing quotations in South West in May 2026. 0% change from April 2026.
Requests for Damp proofing quotations in United Kingdom in May 2026. 0% change from April 2026.
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...
Knowledgable about the problem.
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
Trowbridge - BA14
Enquiry from: Patrick T
Start Date: Immediate
Edwardian terrace. Damp on interior kitchen wall. We also need the outside of this wall rendering
Gloucester - GL1
Enquiry from: Muhebbullah W
Start Date: Immediate
a 2 bedroom semi-detached property, rented. there is a leakage on the corner of a ceiling, someones tried before,fixed and leaking again are you the property owner: owner of the property how many room...
Warminster - BA12
Enquiry from: Kevin F
Start Date: Immediate
I have rising damp and would like a quote
Melksham - SN12
Enquiry from: Alun S
Start Date: Immediate
After a house survey it has been reported that there is high moisture readings and the damp course may have broken down. The house is a 1930's semi, so understanable really. I'm looking for a quote ...
Exeter - EX5
Enquiry from: Suzannah W
Start Date: Immediate
To locate the source of a damp wall and treat if possible
Marlborough - SN8
Enquiry from: Lyla F
Start Date: Immediate
We need a new damp proof membrane, and assessment of timber beams for issues.
Bridport - DT6
Enquiry from: John H
Start Date: Immediate
There are a couple of places in the house that are damp. One is in a cupboard, and one is the base wall in a three window recess.
Bradford-on-Avon - BA15
Enquiry from: Amanda B
Start Date: Immediate
hello we have two windows in the same room. one had issues with the gutter which is now sorted. not sure if there is an underlying issue with the other. i think the damp course has been breached on b...
Penzance - TR18
Enquiry from: Nader G
Start Date: Immediate
i have a small damp patch at the entrance to the house on the inside. i’d like a survey to find out how to permanently fix this. i’d like a quote first are you the property owner: owner of the pro...
Bath - BA1
Enquiry from: Helen S
Start Date: Immediate
Breach of damp roofing at base of stairs.
Radstock - BA3
Enquiry from: Thomas Y
Start Date: Immediate
A survery has identified widespread damp at ground-floor level and concerns that the existing damp-proof course may not be operating effectively. There are also indications of possible ongoing moistur...
Redruth - TR15
Enquiry from: Tina M
Start Date: Immediate
the property has a damp problem especially on the left side of the house. the wall is soaking wet are you the property owner: relative of owner how many rooms do you need damp proofing: 3-4 rooms prop...
Redruth - TR15
Enquiry from: Lisa Z
Start Date: Immediate
hi, i have white mould just a small section in my loft. due to the air vent coming loose. please can you quote me on putting vent back and mould please. i have images as i have had a homebuyers survey...
Verwood - BH31
Enquiry from: Lisa G
Start Date: Immediate
have a lot of condensation on windows especialy in the main bedroom,water marks running down on the walls. are you the property owner: owner of the property how many rooms do you need damp proofing: 3...
Ilfracombe, Woolacombe - EX34
Enquiry from: Mike J
Start Date: Immediate
Damp Proofing wall of house
Penzance - TR20
Enquiry from: Sarah M
Start Date: Immediate
I am in process of completing on a granite cottage in Perranuthnoe. The survey has identified a damp issue, resulting from the external wall being built higher than the internal. The best solution see...
Totnes - TQ9
Enquiry from: Fanny H
Start Date: Immediate
check damp in outbuiding and ascertain whether it is fit to be plasterd
Lyme Regis - DT7
Enquiry from: Sarah V
Start Date: Immediate
After having a structural survey there was found to be dampnin the walls of the property. I woukd like a quote to carrybout a repair for the dampness please
Honiton - EX14
Enquiry from: Louisiana L
Start Date: Immediate
hello - we have an outhouse that we are looking to get damp proofed as it is currently very damp inside. it would be great to get a quote and to understand what this will entail. thanks, louisiana ar...
Bristol - BS5
Enquiry from: William S
Start Date: Immediate
walls damp proof.. I've got rising damp in some places in my house
Answer a few quick questions, so we can match you with local damp proofing specialists who can help.
Get free, no-obligation local damp proofing quotes from 4 verified damp proofing specialists working in South West.
Compare customer reviews, services and prices, and choose the right tradesperson for you.
Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.
Good easy way to find a selection of trades you need all in one place.
Love Local Quotes it's a big part of my Business I would recommend to anyone
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.
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.
We can help you get more damp proofing work with our qualified job leads and boost your business.
Join today