Extensions such as garage conversions will typically require supplementary damp proofing to be added through the conversion, as the pre-existing garage will often have a single skin design for walls and floors, which was not designed to comply with building regulations for habitable rooms. This damp proofing should be put into walls and floors. Furthermore, the roof of the garage conversion will need water proofing. The damp proofing for the floor of the garage conversion will usually be performed by by using 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 if the floor will be a solid or a floating floor. In some garages, the walls have already been damp proofed, but this may need to be improved as part of the conversion in order to comply with current building regulations. The walls will need to be damp proofed in order to safeguard the brickwork from rotting gradually as moisture sets in. This can be performed by either using damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls already present in the garage. Damp proofing is an important part of the building regulations that the garage conversion will need to comply with, therefore is it important to ensure 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
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| Avg. price | Avg. price |
| Avg. price high | Avg. price high |
£1900
£1425
£950
£475
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| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in Wiltshire in October 2024
Requests for Damp proofing quotations in Wiltshire in October 2024. 0% change from September 2024.
Requests for Damp proofing quotations in South West in October 2024. 0% change from September 2024.
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...
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Swindon - SN6
Enquiry from: Alex F
Start Date: Immediate
I have identified what might be dry or wet rot in wooden beams in my loft (supporting the roof). I wondered if someone is available to come for an inspection and see if there is any rot and to advice ...
Chippenham - SN15
Enquiry from: Allan B
Start Date: Immediate
We are refurbishing an extension containing a bedroom and a bathroom. It suffers from damp, condensation and mould.
Marlborough - SN8
Enquiry from: Belinda C
Start Date: Immediate
I have been here 24 years. The area of damp had been treated with a 20 year guarentee. That is well over. The plaster is cracking & does not look good. There is no water affecting it altho’ ...
Marlborough - SN8
Enquiry from: Annabel T
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Hi, there’s one wall that’s got damp on that appears the ground level soil is above the ground level of the room
Westbury - BA13
Enquiry from: Clive D
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Need a free damp test on bathroom please
Marlborough - SN8
Enquiry from: KATHERINE S
Start Date: Immediate
We have damp in the house - smell it and clothes affected in bedrooms (downstairs) and see it upstairs in communal areas - some signs of mould related illness so wanting to sort this
Salisbury - SP5
Enquiry from: Debbie C
Start Date: Immediate
Just purchased property and damp has been identified. We'd like to get someone out to identify and help treat that damp please.
Swindon - SN25
Enquiry from: Warren M
Start Date: Immediate
Water ingress through gable end south west facing wall. 2 surveys have pointed out that the damp issues have been caused by the contant south westerly driven rain. I need a quote for the application...
Swindon - SN1
Enquiry from: Waqas A
Start Date: Immediate
Damp inspection as both side walls are wet in mid terraced property.
Marlborough - SN8
Enquiry from: Briony M
Start Date: Immediate
Hi, Would you be able to provide a rough estimate for dpc injection across 4m of external wall. We are in the middle of selling our property and need a quote for a dpc I section across the back wall....
Malmesbury - SN16
Enquiry from: Rose I
Start Date: Immediate
damp assessment and report needed - tenant has reported mould growing on metal hob and glossed doors when she is away - old property - no obvious source of damp are you the property owner: relative o...
Marlborough - SN8
Enquiry from: Gregg B
Start Date: Immediate
Damp walls around chimney breast due to pointing, flashing and blown brick facia issues. I intend on replacing the complete fireplace so would like this issue addressed prior to further work taking pl...
Warminster - BA12
Enquiry from: Guy D
Start Date: Immediate
I’m renovating a utility room and there are damp concerns on the walls and ceilings. I’d like to have a expert around to take a look. Thanks allot
Melksham - SN12
Enquiry from: Troy G
Start Date: Immediate
Requesting a survey to diagnose and potentially resolve damp issues. House is a mid-terrace property built around 1900. Issues we have are: Bubbling/flaky paint and plaster around the skirting boar...
Salisbury - SP1
Enquiry from: Dennis R
Start Date: Immediate
Identify Damp and proofing for two walls, one with window . Both are exterior walls
Marlborough - SN8
Enquiry from: Gary R
Start Date: Immediate
i’ve just bought a cottage and the survey has shown up a need for damp proofing and timber treatment so i’m keen to get an inspection done and a quote given asap are you the property owner: owner ...
Salisbury - SP4
Enquiry from: Neil K
Start Date: Immediate
survey of mould and damp in the house (upstairs bedrooms) with recommendations for remediation. likely cause of mould and damp is either penetrating damp but more likely condensation are you the prope...
Swindon - SN2
Enquiry from: Simon K
Start Date: Immediate
Damp proofing in lower floor
Marlborough - SN8
Enquiry from: Rupert M
Start Date: Immediate
Internal damp proofing works
Bradford-on-Avon - BA15
Enquiry from: Simon J
Start Date: Immediate
clear signs of damp in a corner area of a ground floor study. flaky paint, mould, rotten skirting board are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2...
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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.
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.
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