Extensions such as garage conversions will usually require supplementary damp proofing to be installed through the conversion, as the pre-existing garage routinely has a single skin design for walls and floors, which was not built to be in accordance with building regulations for habitable rooms. This damp proofing will need to be put into 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 often be achieved 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 pre-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 some garages, the walls have been damp proofed, but this may have to be improved as part of the conversion to be able to adhere to current building regulations. The walls should be damp proofed to be able to protect the brickwork from rotting gradually as moisture sets in. This can be accomplished 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 will need to comply with, therefore is it important to make sure that your garage conversion employs 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
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| Avg. price | Avg. price |
| Avg. price high | Avg. price high |
£3000
£2250
£1500
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| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
Requests for quotations in South West in December 2024
Requests for Damp proofing quotations in South West in December 2024. 0% change from December 2024.
Requests for Damp proofing quotations in United Kingdom in December 2024. 0% change from December 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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The Hive Efficiency Group supply and install a range of products to both residential and commercial properties, designed to assist in making them more energy efficient and maintenance free for many years to come. From thermally effiecient wall c...
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Bournemouth - BH11
Enquiry from: Nicky D
Start Date: Immediate
have water coming up through floor
Plymouth - PL4
Enquiry from: Nicky F
Start Date: Immediate
we have several areas on walls within the building that look damp and would like to have a quote for repairs. thank you are you the property owner: owner of the property how many rooms do you need da...
Frome - BA11
Enquiry from: Elissa S
Start Date: Immediate
We recently received our building survey report back from Connells Survey and Valuations, regarding a property. The report has raised a few areas of concern, which we would like to have checked ou...
Plymouth - PL2
Enquiry from: Kevin S
Start Date: Immediate
I believe I've got penetrating damp in my external walls.
Plymouth - PL1
Enquiry from: Robby R
Start Date: Immediate
damp in bedrooms at rear of house. plaster blown on wall on ground floor. are you the property owner: owner of the property how many rooms do you need damp proofing: 3-4 rooms property type: terrace ...
Crediton - EX17
Enquiry from: Peter F
Start Date: Immediate
Damp issues both in upstairs ceiling and downstairs bottom of wall in this stone and cob barn conversion.
Radstock - BA3
Enquiry from: Jess B
Start Date: Immediate
We have a damp wall in a residents bathroom. We’ve have had a plumber come out as we believe it might have been pipe work but it’s not. We aren’t sure what the issue is, but believe it could ...
Weymouth - DT4
Enquiry from: Dana C
Start Date: Immediate
we are purchasing this property and the surveyor has reported high moisture readings to the ground floor walls to the front and rear of the original part of the property. the source of moisture is ris...
Newquay - TR7
Enquiry from: Grzegorz G
Start Date: Immediate
Damp in the walls and wet walls
Newton Abbot - TQ12
Enquiry from: Paul H
Start Date: Immediate
Advise and damp proof survey
Plymouth - PL3
Enquiry from: Mark S
Start Date: Immediate
We have penetrating damp on wall in front room. Part of wall has already been tanked. We want to find out cause of damp issue and find best action to cure damp issue
Bruton - BA10
Enquiry from: Caroline B
Start Date: Immediate
Damp in corner of living room
Shepton Mallet - BA4
Enquiry from: Karl S
Start Date: Immediate
We have two walls, both sides have raising damp. We then have a down stairs bedroom 3 walls have raising damp, also need some areas plastered. Can send photos if easier need a quote to last 3-6 months...
Bristol - BS37
Enquiry from: Jo W
Start Date: Immediate
We are buying the property and want to instruct the work to be carried out before or after we move in and the cost. We have a survey detailing the work. Outer wall mortar removed and replaced with lim...
Bodmin - PL30
Enquiry from: Caroline B
Start Date: Immediate
One whole gable end of the pub has damp both downstairs and up. We would like this looked at so that it can be remedied. Please email for attn Darren/Caz
Axminster - EX13
Enquiry from: Sarah F
Start Date: Immediate
Do you do pre purchase damp and timber surveys in Axminster?
Penzance - TR18
Enquiry from: Jeff G
Start Date: Immediate
We need a remedy for rising damp in a party wall, and remedy for damp penetrating through the wall at higher and ceiling level. We have uncovered some attempt to remedy this by the previous owners at...
Camborne - TR14
Enquiry from: Christian S
Start Date: Immediate
Mould on walls appearing in multiple rooms. Full house building survey less than 1 year ago shows only minimal damp in the old cottage.
Plymouth - PL3
Enquiry from: Beth H
Start Date: Immediate
Damp survey of ground floor living room/dining area. Appears to be rising damp, wet to touch after heavy rain.
St. Ives - TR26
Enquiry from: Jill P
Start Date: Immediate
Damp proof interior in several rooms
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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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