Extensions such as garage conversions will usually require supplementary damp proofing to be installed during the conversion, as the existing garage will typically have a single skin design for walls and floors, which was not built to comply with building regulations for habitable rooms. This damp proofing will have to be put into walls and floors. Additionally, the roofing of the garage conversion will need water proofing. The damp proofing for the floor of the garage conversion will in most cases be achieved by utilising 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, below the new floor, or as part of both, depending on whether 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 improved as part of the conversion in order to meet 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 done by either applying damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls already present in the garage. Damp proofing is a part of the building regulations that the garage conversion should comply with, therefore is it necessary to ensure that your garage conversion incorporates 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 |
£1900
£1425
£950
£475
£0
| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in Gwent in October 2024
Requests for Damp proofing quotations in Gwent in October 2024. 0% change from September 2024.
Requests for Damp proofing quotations in Wales in October 2024. 0% change from September 2024.
Newport - NP19
Enquiry from: Paul C
Start Date: Immediate
it’s one of my rental properties that seems to have damp in the property, possibly a damp course, it’s in newport the address 64 bristol st, newport it’s maindee area are you the property owner:...
Newport - NP11
Enquiry from: Emma W
Start Date: Immediate
Damp on most lower walls of the house lower and ceilings upstairs
Newport - NP11
Enquiry from: Michael B
Start Date: Immediate
Just going through purchase and need to understand extent of damp and cost of repair.
Newport - NP11
Enquiry from: Colin M
Start Date: Immediate
We have an area of wall that appears to be showing signs of damp and we're not sure what we can do about it. Would it be possible to have the site inspected?
Newport - NP19
Enquiry from: Kevin P
Start Date: Immediate
Hi, I've got what I think is penetration damp appearing under or close to windows. It's not affecting large areas but the paint/plaster is now peeling. I've tried drying and treating myself but the...
Abertillery - NP13
Enquiry from: Sally D
Start Date: Immediate
Don't know where the damp is coming from, what type of damp but the survey picked it up on purchase of the house
Monmouth - NP25
Enquiry from: Tim G
Start Date: Immediate
Hi there, We have just had a level 3 RICS survey completed on a property we are looking to purchase. There are 2 areas that we believe you may be able to quote for do the works necessary for us, in...
Cwmbran - NP44
Enquiry from: Susannah K
Start Date: Immediate
Looks like the damp proof membrane got damaged when new patio door installed
Newport - NP11
Enquiry from: Bobby J
Start Date: Immediate
Got rising damp coming from wall connecting room to kitchen extension.
Pontypool - NP4
Enquiry from: Lesle C
Start Date: Immediate
I have damp on my lounge wall in a detached house and I believe this is coming from neighbours overgrown bushes. I would like a professional opinion and to understand the work that is needed please.
Cwmbran - NP44
Enquiry from: Debra R
Start Date: Immediate
I have recently had a survey which advised contacting a damp specialist. I am unsure if this is just condensation as the survey did not confirm anything.
Chepstow - NP16
Enquiry from: Allison H
Start Date: Immediate
we have a lodge grade 2 which has damp coming through on a corner of one internal wall, kind of in the middle of the wall and towards the window would someone be able to come and have a look at it for...
Monmouth - NP25
Enquiry from: Neal K
Start Date: Immediate
In the process of a house purchase and have noticed large areas of damp in an area of an en suite in a basement extension. Would like to see if any idea of the extent of the damp is, if there is signi...
Tredegar - NP22
Enquiry from: EDWIN O
Start Date: Immediate
Single skin wall on ground floor bathroom starting to show damp
Newport - NP19
Enquiry from: Melanie R
Start Date: Immediate
Full damp inspection and repairs
Cwmbran - NP44
Enquiry from: Nicola H
Start Date: Immediate
I would like a survey as I moved house to a bungalow in November and have started to renovate. The survey I had when buying my property said that there were small damp issues, but I think there may be...
Newport - NP20
Enquiry from: Brian B
Start Date: Immediate
I have what looks like rising damp on my house external walls. I need someone to have a look and give me a quote for any remediation work please.
Blackwood - NP12
Enquiry from: Ceri L
Start Date: Immediate
Following on from RICS lvl 2 report we’re looking for a timber & damp report to be carried out at the property. Please can you give me a call back to advise the price of this and how soon the re...
Blackwood - NP12
Enquiry from: Brian D
Start Date: Immediate
Damp in house need to know cause and remedy
Newport - NP19
Enquiry from: Kuldeep S
Start Date: Immediate
ground floor lounge on front wall of the house in the corner . under the stair case ,,party wall. 2 bedroom on first floor on the front wall of the property we would like cost to fix the problems . a...
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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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