Extensions such as garage conversions will usually require extra 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 designed to conform to building regulations for habitable rooms. This damp proofing will need to be added to walls and floors. Additionally, the roofing of the garage conversion will require water proofing. The damp proofing of the floor of the garage conversion will in most cases be performed by by using a damp proof membrane. This membrane can come in either solid or liquid form. The damp proof membrane will be placed down either on top of the 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 a few garages, the walls have been damp proofed, but this might have to be updated as part of the conversion to be able to comply with current building regulations. The walls should be damp proofed in order to safeguard the brickwork from rotting gradually as moisture sets in. This can be carried out by either employing 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, and so is it vital to make sure that your garage conversion makes use of 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 |
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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 |
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Newmarket - CB8
Enquiry from: Gemma S
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Mould in up stairs bedroom cupboard unsure if it’s because of something to do with the loft /roof as has been a problem for 20 years. Mould in bedroom 2 in the corner
Saxmundham - IP17
Enquiry from: Alan M
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(address removed) houseBasement storage outside with staircase going upstairs want to turn it into Bathroom with the roof coverage
Lowestoft - NR32
Enquiry from: Jennifer D
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Ipswich - IP2
Enquiry from: Jane I
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Trench needed around house for water escape
Lowestoft - NR32
Enquiry from: Julie R
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We need to find out if we have got rising damp, and the procedure for the work to be carried out as we have render on the front of the house. Costs for having the work done front and back. The back d
Sudbury - CO10
Enquiry from: Christine P
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Previous leak at back of wall , shower leak dealt w***ars ago. Now at dampness on the lounge wall, other side of the bathroom. Also it looks like damp rising from end of wall
Lowestoft - NR32
Enquiry from: Philip W
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Report on possible penetrating damp
Lowestoft - NR32
Enquiry from: Robert M
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Rising damp and penetrating circles on walls
Lowestoft - NR33
Enquiry from: Nancy A
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Following survey of this old property, I need a quote please. There are multiple issues
Lowestoft - NR32
Enquiry from: Helen S
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Aldeburgh - IP15
Enquiry from: Julia L
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Damp proofing. Injection into wall I think. Single layer brick and moss on outside visible. Peeling paint on inside wall
Sudbury - CO10
Enquiry from: Jamie P
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We have made an offer to buy the property and the survey has suggested that we get a quote for rising damp issues. Inspection will need to be arranged with the estate agent
Lowestoft - NR32
Enquiry from: Rebecca F
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Hello, i have just moved into my new home and over the last few days a big patch of mold has appeared in the back bedroom (old terraced house where *** bedroom is through *** bedroom) it clearly has b
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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!
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.
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.
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