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!
Damp Proofing Costs
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Damp proofing
Extensions including garage conversions will often require extra damp proofing to be added during the conversion, as the existing garage normally has a single skin design for walls and floors, which was not manufactured to comply with building regulations for habitable rooms. This damp proofing will need to be put into walls and floors. In addition, the roofing of the garage conversion will need water proofing.
The damp proofing of the floor of the garage conversion will in most cases be performed by utilising a damp proof membrane. This membrane will 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 some garages, the walls will have already 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 in order to safeguard the brickwork from rotting gradually as moisture sets in. This can be done by either making use of damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls already present in the garage. Damp proofing is a part of the building regulations that the garage conversion should adhere to, and so is it important to ensure that your garage conversion makes use of suitable damp proofing methods.
Average Damp proofing cost
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
Average price per Damp proofing job in 2024
Avg. price low | Avg. price low |
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Avg. price | Avg. price |
Avg. price high | Avg. price high |
£3900
£2925
£1950
£975
£0
Damp proofing installation cost in your area 2024
Labour cost | £1,050 | |
Material cost | £375 | |
Waste removal | £75 |
Damp proofing Manufacturers
Damp proofing FAQs
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.
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.
Damp Proof Course Is yours being Bridged - DPC Damp Proof Course Explanation
Latest damp proofing reviews
Pegasus Stone
Based: in Chesney, surrey, KT16We are here for all of your dampproofing solutions please feel free to send us a message for a free ...
Latest review
Karen B., BN22
15th February 2024
Building work | Damp Proofing in Eastbourne
Contact Made
MPC
Based: in Brighton, BN2MPC is based in Brighton and have 2 positive reviews
Latest review
Libby S., BN1
27th January 2024
Building work | Damp Proofing in Brighton
Mark was friendly, informative and knowledgeable. It turned out that I don't actually...
Home Energy Save.
Based: in Stoke-on-trent, ST4At Home Energy Save Ltd we are specialists in all fields of damp proofing and energy efficiency with...
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M., M41
24th March 2023
Building work | Damp Proofing in Manchester
Very professional, turned up on time., explained the process so overall very good ser...
H & E Plastering
Based: in Bradford, BD4H & E Plastering cover all aspects of Plastering works domestic and commercial, we provide damp proo...
Latest review
Mudita G., BD20
17th July 2023
Building work | Damp Proofing in Keighley
He was very helpful throughout the process from starting to completion. I will defini...
Heatseal Insulation
Based: in Telford, TF2Welcome to Heatseal Insulation Ltd
We are National Loft insulation and Damp Proofing specialists ...
Latest review
Barrie H., CH45
21st November 2022
Building work | Damp Proofing in Wallasey
Good advice, clear understanding of the problem and solution
Weatherdry Insulation
Based: in Tamworth, B79We are a company that specialises in Damp Proofing & Insulation. We have a 100% success rate in res...
Latest review
Karen G., DY8
6th February 2022
Building work | Damp Proofing in Stourbridge
Very obliging and friendly but not able to identify damp problem. Limited knowledge s...
HFAC
Based: in Henley on thames, RG9Proudly Serving Customers in Henley-on-Thames and Surrounding Areas in a 50-Mile Radius
Henley fl...
Latest review
Albert H., SN7
25th March 2022
Building work | Damp Proofing in Faringdon
excellent response to our need and hopefully a permanent solution has been found.
1ST Residential Roofing
Based: in London, NW11I am 53 years of age and I am a third generation tradesman, trained by my father and uncles to a ver...
Latest review
Michael A., MK4
19th February 2020
Building work | Damp Proofing in Milton Keynes
Mr Patrick Cusack gave me excellent friendly advice and was a complete professional i...
Traditional Roofing
Based: in London, HA0Traditional Roofing is based in London and have 4 positive reviews
Latest review
Amanda C., EN1
15th February 2017
Building work | Damp Proofing in Enfield
Patrick arrived promptly , he is a polite and courteous tradesman, very professional....
The Hive Efficiency Group
Based: in Birmingham, B16The Hive Efficiency Group supply and install a range of products to both residential and commercial ...
Latest review
Katherine L., OX17
4th March 2016
Building work | Damp Proofing in Banbury
Professional. Helpful.
Rated Local damp proofing specialists
Home Energy Save Ltd.
Based: in Stoke-on-trent, ST4 2RWAt Home Energy Save Ltd we are specialists in all fields of damp proofing and energy efficiency within the home. Whether your problem is loft condensation, rising damp, penetrating damp, black mould or simply heat loss then we can help. We specia...
Weatherdry Insulation Ltd
Based: in Tamworth, B79 7XHWe are a company that specialises in Damp Proofing & Insulation. We have a 100% success rate in resolving damp issues connected to RISING or PENETRATING damp. We offer a FREE, NO OBLIGATION damp survey and quotation . We also specialise in loft...
Pegasus Stone Ltd
Based: in Chesney, surrey, KT16 0BHWe are here for all of your dampproofing solutions please feel free to send us a message for a free quotation
H & E Plastering
Based: in Bradford, BD4 9QYH & E Plastering cover all aspects of Plastering works domestic and commercial, we provide damp proofing and remedial works. Bradford based and covering all West Yorkshire. With over 10 years experience in Plastering and Damp Proofing , please...
Heatseal Insulation Ltd
Based: in Telford, TF2 9TWWelcome to Heatseal Insulation Ltd We are National Loft insulation and Damp Proofing specialists covering most of the UK. Our objective is to provide an outstanding & reliable service to all our customers offering the latest technology to the Dome...
The Hive Efficiency Group
Based: in Birmingham, B16 8LBThe 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...
MPC
Based: in Brighton, BN2 6NNMPC based in Brighton, offer services in Damp Proofing. They have an average rating of 4.375 from 2 review(s). See their latest 5 star review below
Aquapol Scotland Ltd.
Based: in Edinburgh, EH1 1DDAquapol Scotland Ltd. based in Edinburgh, offer services in Damp Proofing. They have an average rating of 4.5 from 1 review(s). See their latest 5 star review below
Tonbridge Construction and Damp-Proofing
Based: in Tonbridge, TN9 2YRTonbridge Construction and Damp-Proofing based in Tonbridge, offer services in Damp Proofing. They have an average rating of 5 from 1 review(s). See their latest 5 star review below
Seal
Based: in Chichester, PO209EASeal based in Chichester, offer services in Damp Proofing. They have an average rating of 4.875 from 4 review(s). See their latest 5 star review below
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