Extensions including garage conversions will often require extra damp proofing to be added during the conversion, as the existing garage typically has a single skin design for walls and floors, which was not built to comply with building regulations for habitable rooms. This damp proofing should be put into walls and floors. Additionally, the roofing of the garage conversion will require water proofing. The damp proofing for the floor of the garage conversion will in most cases be performed by utilising a damp proof membrane. This membrane can come in either solid or liquid form. The damp proof membrane will be put down either on top of the 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 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 protect the brickwork from rotting gradually 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 present in the garage. Damp proofing is an important part of the building regulations that the garage conversion should comply with, therefore is it vital to make sure that your garage conversion makes use of 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 Westminster in January 2025
Requests for Damp proofing quotations in Westminster in January 2025. 0% change from December 2024.
Requests for Damp proofing quotations in London County in January 2025. 0% change from December 2024.
The City of Westminster is an Inner London borough which occupies a lot of your central area of Greater London which includes most of the West End. It is towards the west of and adjoining the ancient City of London, directly to the east of the Royal Borough of Kensington and Chelsea, and its southern boundary is the River Thames. It was created with the 1965 establishment of Greater London. Upon creation, Westminster was awarded city status, which had been previously held by the smaller sized Metropolitan Borough of Westminster. The borough covers a total area of around 8.29 square miles.
Apart from several big parks and open spaces, the population density of the district is high. According to population estimates from the middle of 2014, the borough presently features a permanent population of about 233292, indicating a slight decrease from 2008. Several sites normally associated with London are within the borough, including St. James's Palace, Buckingham Palace, the Houses of Parliament, and Number 10 Downing Street.
The borough is split into several localities, including the ancient political district of Westminster around the Palace of Westminster, the shopping areas around Oxford Street, Regent Street, Piccadilly and Bond Street, and the night time entertainment district of Soho. The City of Westminster is home to a big number of organisations. Quite a few leading global corporations have chosen to establish their international or European headquarters inside the City of Westminster. For all your residence upgrades, ensure that you use trustworthy experts in Westminster to make sure you get the top quality.
London - SW18
Enquiry from: Francois P
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I have a small section in one of the bedrooms which has moisture ingress and actually got extremely damp with recent rains. I was hoping for a damp specialist to inspect this week and provide quote on...
London - SW6
Enquiry from: Marie C
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Around my windows I see damp maybe from condensation, need a thorough damp survey to understand the origin
London - NW5
Enquiry from: Deborah K
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Survey of damp in 3 areas, party wall of lower ground floor where neighbours have tanked their side, front wall adjacent to parapet first floor bedroom and in lower ground floor utility room where wa...
London - SW2
Enquiry from: Sasha M
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Review damp wall and assess damage
London - SW11
Enquiry from: Mohamed C
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dampness in the wall where they enter 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
London - SW16
Enquiry from: Richard H
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damp survey following a level 3 rics survey that identified damp.
London - W6
Enquiry from: Sema J
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damp survey - two rooms under flat roof are showing signs of damage from damp, peeling plaster and black mould.bith if these rooms protrude out the back of the house which is a maisonette. are you the...
London - SW15
Enquiry from: Helen B
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My homebuyers survey came back indicting some damp; I want the extent looked into. Its a ground floor flat (2 bedroom) in a building block. Pls DO NOT call me
London - NW10
Enquiry from: Nikolay U
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need to proof where the damp and mould come from. only external wall is infected! are you the property owner: tenant (with permission) how many rooms do you need damp proofing: 1-2 rooms property type...
London - SW15
Enquiry from: USHA P
Start Date: Immediate
INSPECT THE WHOLE PROPERTY AND REPROT ON INTERNAL DAMPNESS AND THE CONDITION OF ALL TIMBERS INCULDING SUB-FLOOR/ROOF VOIDS. (ALL GROUND FLOOR IS CEMENT FLOORING)
London - SW15
Enquiry from: USHA P
Start Date: Immediate
INSPECT THE WHOLE PROPERTY AND REPROT ON INTERNAL DAMPNESS AND THE CONDITION OF ALL TIMBERS INCULDING SUB-FLOOR/ROOF VOIDS. (ALL GROUND FLOOR IS CEMENT FLOORING)
London - NW5
Enquiry from: Daniel J
Start Date: Immediate
good afternoon, we looking for urgent interior mould removal which has been caused by penetrating damp to the front wall. please let me know when you can attend to assess. regards, daniel are you the...
London - NW1
Enquiry from: Nick I
Start Date: Immediate
damp proofing on two walls 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
London - W7
Enquiry from: Joy G
Start Date: Immediate
i need a quote for a damp course on the house are you the property owner: relative of owner how many rooms do you need damp proofing: 3-4 rooms property type: terrace please call to appoint
London - SW16
Enquiry from: Haydn J
Start Date: Immediate
Home buyers report identified two potential areas of damp in a small 1 bedroom flat. Roof and bathroom.
London - SW2
Enquiry from: Michael D
Start Date: Immediate
bank requires a report for damp and timber are you the property owner: owner of the property how many rooms do you need damp proofing: 5+ rooms property type: terrace please call to appoint
London - SW16
Enquiry from: Amit G
Start Date: Immediate
3 bed flat with combined kitchen and living, 1 bathroom and basement we would like a damp survey with an estimate of cost for remidial works are you the property owner: relative of owner
London - SW8
Enquiry from: Duc H
Start Date: Immediate
I am looking for an independent damp surveyor for a grade 2 listed building in ***. 3 story terrace, 121 internal sqm. being a PCA member is a plus. I am happy to accept verbal advice instead of a fu...
London - SW20
Enquiry from: Simer C
Start Date: Immediate
damp survey in a 3 bedroom house how many rooms do you need damp proofing: 1-2 rooms are you the property owner: owner of the property property type: terrace please call to appoint
London - SW15
Enquiry from: Lewis H
Start Date: Immediate
Tanking of walls. Approximately 24m2 in total (bedroom and living room). Our budget is low, so happy to remove plaster ourselves. We wouldn't need it painting afterwards Many thanks! Lewis
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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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