Extensions including garage conversions will usually require extra damp proofing to be added through the conversion, as the pre-existing garage will typically have a single skin design for walls and floors, which was not designed to be in accordance with building regulations for habitable rooms. This damp proofing will have to be put into walls and floors. Additionally, the roof of the garage conversion will need water proofing. The damp proofing for the floor of the garage conversion will usually be achieved by utilising a damp proof membrane. This membrane will come 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 if the floor will be a solid or a floating floor. In some garages, the walls have been damp proofed, but this might 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 safeguard the brickwork from rotting slowly as moisture sets in. This can be done by either employing damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already present in the garage. Damp proofing is an integral part of the building regulations that the garage conversion should comply with, and so is it vital 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 |
£7800
£5850
£3900
£1950
£0
| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in Scotland in May 2026
Requests for Damp proofing quotations in Scotland in May 2026. 0% change from April 2026.
Requests for Damp proofing quotations in United Kingdom in May 2026. 0% change from April 2026.
H & E Plastering cover all aspects of Plastering works domestic and commercial, we provide damp proofing and remedial works. Bradford based and covering all West Yorkshire. With over 10 years experience in Plastering and Damp Proofing , please...
He was very helpful throughout the process from starting to completion. I will definitely recommend him.
Aquapol are the only ones that have been in touch in
Dundee - DD4
Enquiry from: Stuart S
Start Date: Immediate
Looks like a burst pipe in an adjacent wall causing a damp patch on my bedroom wall. Needs damp proofing repair
Forfar, Kirriemuir - DD8
Enquiry from: Dayveen R
Start Date: Immediate
Hi I need the house fully checked for damp. I have the home report but need it checked and a price.
Biggar - ML12
Enquiry from: Jackie H
Start Date: Immediate
Damp survey and related work to fix the problem
Brechin - DD9
Enquiry from: Brian John R
Start Date: Immediate
Damp proofing, survey and treatment. Dry rot survey and treatment.
Hamilton - ML3
Enquiry from: Penny M
Start Date: Immediate
Black mold in one room all along the bottom up to middle of wall and also some beginning on adjacent wall. Both walls experience full weather effect.
Biggar - ML12
Enquiry from: Hannah H
Start Date: Immediate
Potential issue of damp but would want a survey to see if it is damp or just remnants of it and to get a quote for fix if needed.
Newmilns - KA16
Enquiry from: Bryan L
Start Date: Immediate
Rising damp, looking to get the walls injected
Coldstream, Cornhill-on-Tweed, Mindrum - TD12
Enquiry from: Sue L
Start Date: Immediate
injection damp proof for whole building
Isle of Lewis - HS2
Enquiry from: Billie B
Start Date: Immediate
hi i am in the process of buying the above property in swordale and would like a report on timber and damp. please can you phone me so that i may arrange a timeslot through the estate agent .thank yo...
Dollar - FK14
Enquiry from: Scott G
Start Date: Immediate
After removing some old wallpaper in the bedroom where it was peeling I discovered a large, long crack in the wall and the wall felt damp. It also seems to have mold on the wall. The area seems to be ...
Cowdenbeath, Kelty - KY4
Enquiry from: Anne L
Start Date: Immediate
damp in bedroom needs fixed
Peebles - EH45
Enquiry from: Don H
Start Date: Immediate
Examine extent of damp identified in one bedroom (ground floor) and provide an estimate for an work that may be required.
Oakbank - EH53
Enquiry from: Maurice S
Start Date: Immediate
Small Damp patch inside a wardrobe in upstairs bedroom
Ayr - KA7
Enquiry from: Chris T
Start Date: Immediate
Rising damp issue at tenants house
Peterhead - AB42
Enquiry from: Jackie P
Start Date: Immediate
farmhouse with damp in lower floor plus 1 room on upper floor are you the property owner: owner of the property how many rooms do you need damp proofing: 3-4 rooms property type: detached please call...
Kilmarnock - KA3
Enquiry from: Martin R
Start Date: Immediate
check for dampness in bedroom at one corner 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
Coatbridge - ML5
Enquiry from: Brinch N
Start Date: Immediate
I am trying to buy this house but I need a timber and damp survey to be done before taking any engagement. I hope you will be able to help
Aberdeen - AB23
Enquiry from: Sam O
Start Date: Immediate
Damp ceiling needs to be sorted out
Greenock - PA16
Enquiry from: Sandra A
Start Date: Immediate
hi, i am looking for damp survey for the whole ground floor of the building. we have some water ingress and smell of damp in the storeroom and 3 flats are you the property owner: owner of the property...
Helensburgh - G84
Enquiry from: Wacas A
Start Date: Immediate
We recently got home report done and it sad there is little damp in living room near and around the fire place just want to get things chked
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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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