Extensions including garage conversions will often require supplementary damp proofing to be added through the conversion, as the pre-existing garage typically has a single skin design for walls and floors, which was not designed to conform to building regulations for habitable rooms. This damp proofing should be added to walls and floors. Additionally, the roof of the garage conversion will need 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 will 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 whether the floor will be a solid or a floating floor. In some garages, the walls will have already been damp proofed, but this might have to be updated as part of the conversion in order to adhere to current building regulations. The walls should be damp proofed in order to protect the brickwork from rotting slowly as moisture sets in. This is carried out by either applying 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 adhere to, and so is it important to make sure that your garage conversion employs 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 |
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Windsor is actually a town and unparished region within the Royal Borough of Windsor and Maidenhead in Berkshire, England. It is well regarded as the site of Windsor Castle, on the list of official homes of the British Royal Family.
Slough - SL1
Enquiry from: Richard K
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I need a damp and timber report carried out
Pinner - HA5
Enquiry from: Kiran M
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Farnborough - GU14
Enquiry from: Peter H
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Our front bedroom has mould above the window, possibly caused by a blocked gutter , which has now been cleared of leaves. however the mould remains and is difficult to eliminate. we need to be rid of
Property: terrace
Ashford - TW15
Enquiry from: Krishna A
Start Date: Immediate
To check whether the wall is damp or not
Pinner - HA5
Enquiry from: Kiran M
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Damp wall in daughter’s bedroom. Find and fix the issue
Marlow - SL7
Enquiry from: Simon M
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Would like a free damp inspection please
Maidenhead - SL6
Enquiry from: Jennean A
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We have signs of damp in 2 xbedrooms and can't understand why
Yateley - GU46
Enquiry from: Richard B
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Quote for rising damp in a few rooms at front of house
Farnborough - GU14
Enquiry from: Sinclair P
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One of the flats (flat 17) is suffering with damp within the property. we have completed external repairs to the building and much of the damp appears to have dried out over the summer, however we nee
Iver - SL0
Enquiry from: Levina M
Start Date: Immediate
We do not own this house currently; however are imminently exchanging on this property, we are requesting 2 quotes for each of the areas damp has been identified in the survey report. There is unlikel
Iver - SL0
Enquiry from: Sandy V
Start Date: Immediate
Hi, looking for a free quotation for damp treatment. Are you able to visit my property next week on Friday 29/08/25? Pls advise
Walton-on-Thames - KT12
Enquiry from: Tom W
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Damp Survey and Remediation. I can whatsapp photos
Ascot - SL5
Enquiry from: Arran G
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Marlow - SL7
Enquiry from: Peter N
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Small Cottage, 1/2 walls showing damp survey to all house
Weybridge - KT13
Enquiry from: Donna M
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Camberley - GU16
Enquiry from: Samia M
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I’m in the process of purchasing a property in Camberley (GU16) and a recent survey has identified signs of damp in multiple areas, including the family room wall and chimney masonry within the roof
Farnborough - GU14
Enquiry from: Elaine K
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Potential property purchase, survey completed (level 2). Survey indicated high damp reading and some sub floor concerns. I am looking for works to be quoted on to identify the level of works required
Maidenhead - SL6
Enquiry from: Philippa I
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I have a problem which I believe could be a failed damp proof course- The property is ground floor and the walls are wet in the bedroom to the outside wall and skirting board soft. There is an Atmos
High Wycombe - HP13
Enquiry from: Razia I
Start Date: Immediate
Riding damp inside living room wall
Woking - GU22
Enquiry from: Kim M
Start Date: Immediate
Survey for damp, cause and quote for remedial works
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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.
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.
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