Extensions including garage conversions will typically require extra damp proofing to be installed as part of conversion, as the pre-existing garage normally has 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. Furthermore, the roof of the garage conversion will need water proofing. The damp proofing of the floor of the garage conversion will often be achieved by by using a damp proof membrane. This membrane can come in either solid or liquid form. The damp proof membrane will be placed 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 a few garages, the walls have already been damp proofed, but this may have 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 is performed 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 important part of the building regulations that the garage conversion should comply with, and so is it necessary to make sure that your garage conversion incorporates 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 Devon in June 2026
Requests for Damp proofing quotations in Devon in June 2026. 0% change from May 2026.
Requests for Damp proofing quotations in South West in June 2026. 0% change from May 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.
North Tawton, Okehampton - EX20
Enquiry from: Sam B
Start Date: Immediate
Rising damp. In stone cottage
Plymouth - PL4
Enquiry from: Dawson H
Start Date: Immediate
would it be possible to provide a quote for clearing damp and mould from properties in plymouth please? we are a social housing provider and need to clear damp and mould found in the following propert...
Exeter - EX5
Enquiry from: Suzannah W
Start Date: Immediate
To locate the source of a damp wall and treat if possible
Ilfracombe, Woolacombe - EX34
Enquiry from: Mike J
Start Date: Immediate
Damp Proofing wall of house
Totnes - TQ9
Enquiry from: Fanny H
Start Date: Immediate
check damp in outbuiding and ascertain whether it is fit to be plasterd
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...
Newton Abbot - TQ12
Enquiry from: Caroline L
Start Date: Immediate
condensation problem , your the expert, i don’t know what is causing it , and i need advice etc are you the property owner: owner of the property property type: detached how many rooms do you need d...
Dawlish - EX7
Enquiry from: Michael D
Start Date: Immediate
Information on curing our condensation main Y in bedroom
Newton Abbot - TQ12
Enquiry from: Naomi C
Start Date: Immediate
Rising damp quote needed
Yelverton - PL20
Enquiry from: Natalie C
Start Date: Immediate
To confirm if problem is rising damp and to fix the afflicted wall.
Newton Abbot - TQ12
Enquiry from: Carole A
Start Date: Immediate
Estimate for treatment to inside cellar wall signs of rising damp in patches
Teignmouth - TQ14
Enquiry from: Roger T
Start Date: Immediate
Remove exterior render at ground floor removing two feet wide , 20 ft long covering on flat roof,, replaced with new material. Tank interior on 1 length wise wall and one width wise wall, having remo...
Kingsbridge - TQ7
Enquiry from: Candi S
Start Date: Immediate
Potential dry rot on one wall in upstairs bedroom... needs treatment
Ilfracombe, Woolacombe - EX34
Enquiry from: Alessandra B
Start Date: Immediate
We are renovating our flat and we have noticed that with high winds and heavy rain there is a lot of water coming down the inside of our bay windows.
Buckfastleigh - TQ11
Enquiry from: Jenny H
Start Date: Immediate
hello, i need to have an independent damp survey/inspection on a property
Totnes - TQ9
Enquiry from: Jake R
Start Date: Immediate
In the downstairs room, we’ve noticed significant damp. A leather chair developed mold, and on closer inspection, we found black growth on the skirting board. When I tried to clean it, the skirting ...
Plymouth - PL4
Enquiry from: George P
Start Date: Immediate
This property has considerable damp issues with salts and fungus on the walls, and damp in the floor boards.
Braunton - EX33
Enquiry from: Samantha T
Start Date: Immediate
Hi I'm looking for someone to come and have a look at an external wall which may be letting water in and provide a quote to get the problem rectified please. I live in Braunton. Thank you
Torquay - TQ1
Enquiry from: Frances P
Start Date: Immediate
Damp repairs and proofing
Axminster - EX13
Enquiry from: Molly W
Start Date: Immediate
quote needed for treating rising damp
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 Devon.
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
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!
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