Extensions including garage conversions will usually require supplementary damp proofing to be installed through the conversion, as the pre-existing garage normally has a single skin design for walls and floors, which was not designed to comply with building regulations for habitable rooms. This damp proofing will need to be added to walls and floors. Moreover, the roofing of the garage conversion will need water proofing. The damp proofing of the floor of the garage conversion will often be performed by employing 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 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 some garages, the walls have been damp proofed, but this might 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 safeguard the brickwork from rotting gradually as moisture sets in. This is carried out by either using damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already in the garage. Damp proofing is an integral part of the building regulations that the garage conversion should comply with, therefore is it important 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 |
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| 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 |
Searches that showed one of our pages for Enfield, all services
The large borough of Enfield in London boasts a populace of 312,500. The region has a history of armaments construction, most notably the Lee Enfield rifle which had been standard issue in the British Army right until 1957. At this time, a significant improvement is transforming the face of Enfield, particularly in Enfield Town, with extra shops and a second multi-storey car park added alongside a new road layout.
London - N7
Enquiry from: Ravneet M
Start Date: Immediate
Have had two internal walls in a basement flat come up with high moisture readings. 40% in an internal bathroom wall which feels dry but has some hard bumps at the bottom. Width of wall is about 70cm
London - N9
Enquiry from: Molly M
Start Date: Immediate
Assess my wall and sort out the damp prof problem
Pinner - HA5
Enquiry from: Kiran M
Start Date: Immediate
London - W3
Enquiry from: Chris R
Start Date: Immediate
Front of house approximately 6M fix the damp proofing externally. Red brick 1920s terraced proofing
Potters Bar - EN6
Enquiry from: Priyanka R
Start Date: Immediate
To review the damp, see the source, take damp readings and advise the best course of action
Pinner - HA5
Enquiry from: Kiran M
Start Date: Immediate
Damp wall in daughter’s bedroom. Find and fix the issue
Harrow - HA3
Enquiry from: Mukund V
Start Date: Immediate
Quotation ***dground Massionnet dampening & condensation & general upgrading for the house
London - SW7
Enquiry from: Harriet S
Start Date: Immediate
Tanking one bedroom wall, a hall way wall and a utility room wall
St. Albans - AL4
Enquiry from: Nick W
Start Date: Immediate
Ilford - IG2
Enquiry from: Alok A
Start Date: Immediate
Anti-Mould, Damp painting required for the entire 2/3 bedroom flat including cleaning existing mould etc
London - E7
Enquiry from: Zahirulhasan S
Start Date: Immediate
Due to recent rains, some water / moisture seems to have seeped onto the inner wall, blistering the paint / coating; so may need damp proofing / sealing of some sort
Hornchurch - RM12
Enquiry from: Simon P
Start Date: Immediate
Just moved into a house and started decorating. Noticed signs of damp in the corner of *** bedroom while painting. Discoloured and flaking paint. Rusty screws in window blind. Guessing a roof or rende
Potters Bar - EN6
Enquiry from: Nik D
Start Date: Immediate
Possible water penetration in two places in the house
Property: semi detached
Welwyn Garden - AL8
Enquiry from: Gregory D
Start Date: Immediate
We had someone quote for DPC repair on one corner of our house where it has clearly failed. But I wanted to see what it would cost to do the whole house while we are at it
London - SE5
Enquiry from: Susan L
Start Date: Immediate
Basement level of flat has some damp issues. Requesting a report and quote. I am the Landlord, Susan Lunn and I live in Australia
Waltham Cross - EN8
Enquiry from: Lorena S
Start Date: Immediate
A building survey was done and it seems that there is some rising damp in the living room and some possible issues with the isolation in one of the bedrooms. I'd appreciate it if we could discuss thes
Ilford, Chigwell - IG3
Enquiry from: D
Start Date: Immediate
Two bay windows at front of house
Hornchurch - RM12
Enquiry from: Brenda M
Start Date: Immediate
Quote on front wall as damp inside
Waltham Abbey - EN9
Enquiry from: Graham M
Start Date: Immediate
Skirting blown. Was damp behind skirting and on floor. No pipes in this area, so no leaks. Possibly penetration from outside, next to front door
London - SW11
Enquiry from: Callum W
Start Date: Immediate
PIV installation in basement
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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!
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.
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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