Extensions including garage conversions will often require additional 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 conform to building regulations for habitable rooms. This damp proofing should be put into walls and floors. Additionally, the roof of the garage conversion will need water proofing. The damp proofing for the floor of the garage conversion will most likely be performed 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 if the floor will be a solid or a floating floor. In a few garages, the walls have been damp proofed, but this might need to be improved as part of the conversion in order to meet current building regulations. The walls will need to be damp proofed in order to safeguard the brickwork from rotting slowly as moisture sets in. This can be performed by either applying 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 will need to adhere to, therefore is it necessary to ensure 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 |
|---|---|
| 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 Aylsham in May 2026
Requests for Damp proofing quotations in Aylsham in May 2026. 0% change from April 2026.
Requests for Damp proofing quotations in Norfolk in May 2026. 0% change from April 2026.
Aylsham is a historical market community and civil parish on the River Bure in north Norfolk, England, almost 9 mi (14 km) north of Norwich. The river rises near Melton Constable, 11 miles (18 km) upstream from Aylsham and continues to Great Yarmouth and also the North Sea, although it was only made navigable after 1779, permitting grain, coal as well as wood to be raised river. The town is close to large estates as well as grand country houses at Blickling, Felbrigg, Mannington as well as Wolterton, which are very important tourist destinations. The civil parish has an area of 4,329 acres (17.52 km2) as well as in the 2001 census had a population of 5,504 in 2448 homes, lowering to a population of 3,999 in 1,591 homes at the 2011 Census. For the purposes of city government, the parish drops within the district of Broadland.
Norwich - NR11
Enquiry from: Erin M
Start Date: Immediate
a house has an awful smell unlike other damp houses we have lived in. We think it is under the laminate flooring. The previous owners had several cats and dogs. How much would a thorough examination...
Norwich - NR11
Enquiry from: HANNAH W
Start Date: Immediate
Damp proofing - downstairs of property. Gathering quotes and estimates.
Norwich - NR11
Enquiry from: Laura B
Start Date: Immediate
We are in the process of buying 20 Bure Way and the surveyor has identified damp in a few places that it needs addressing.
Norwich - NR11
Enquiry from: Cheryl B
Start Date: Immediate
Hi, I would like a damp and timber survey to be completed this week if possible
Norwich - NR10
Enquiry from: Shaun A
Start Date: Immediate
Removal of several (about 5) pieces of furniture from Aylsham to Buxton. Will need 2 people as not able to help.
Norwich - NR11
Enquiry from: Michelle V
Start Date: Immediate
various damp and mould patches in holiday home that need to be removed. ideally must remove w/c 5 april. are you the property owner: owner of the property property type: detached how many rooms do yo...
Norwich - NR10
Enquiry from: Neliswa P
Start Date: Immediate
Can you please quote me to remove mould in a batchelor flat. Ceiling, cupboards etc
Norwich - NR10
Enquiry from: Catherine R
Start Date: Immediate
Please could you quote for mould removal for several rooms in our two bedroom house Are you the property owner: Owner of the property How many rooms do you need damp proofing: 3-4 Rooms Property Type:...
Norwich - NR10
Enquiry from: Christopher B
Start Date: Immediate
Mouldy building in top corner of ceiling, continuing down the wall and across, including all around the wall of the window Also some sort of white mouldy looking all over the walls around the room...
Norwich - NR11
Enquiry from: Jay T
Start Date: 1 to 3 months
Damp is rising in two sections of 9" brick house wall. One section is about 4m long and the other about 1m long. There would be no need to re-plaster after damp treatment because a contractor will be ...
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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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