Extensions such as garage conversions will often require extra damp proofing to be installed during the conversion, as the pre-existing garage typically has a single skin design for walls and floors, which was not built to comply with building regulations for habitable rooms. This damp proofing should be put into walls and floors. In addition, the roofing of the garage conversion will require water proofing. The damp proofing for the floor of the garage conversion will often be achieved by by using a damp proof membrane. This membrane can come in either solid or liquid form. The damp proof membrane will be put 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 will have already been damp proofed, but this may need to be updated as part of the conversion to be able to comply with current building regulations. The walls will need to be damp proofed in order to protect the brickwork from rotting gradually as moisture sets in. This is carried out by either employing 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, and so is it important 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 |
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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 |
Requests for quotations in West Sussex in October 2024
Requests for Damp proofing quotations in West Sussex in October 2024. 0% change from September 2024.
Requests for Damp proofing quotations in South East in October 2024. 0% change from September 2024.
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Worthing - BN14
Enquiry from: Warwick D
Start Date: Immediate
We have a bungalow and we are having a damp problem in one of our bedrooms The black spots are appealing on our ceiling along the cornices. I have tried to seal the area without success so would ap...
Horley - RH6
Enquiry from: Marvin F
Start Date: Immediate
quotes for damp proofing works are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: semi detached
Horsham - RH12
Enquiry from: Micah M
Start Date: Immediate
We are in the later stages of purchasing this property with it being estimated to complete beginning of September. We have had a level 3 survey completed which has shown high levels of damp on the...
East Grinstead - RH19
Enquiry from: Sharon S
Start Date: Immediate
Damp issue resolved, I have pictures I can attach
Crawley - RH10
Enquiry from: Clifford T
Start Date: Immediate
damp work in hallway and front living room
Worthing - BN11
Enquiry from: Julie W
Start Date: Immediate
damp, mould, salt deposits
East Grinstead - RH19
Enquiry from: Sharon S
Start Date: Immediate
Damp issue resolved, I have pictures I can attach
Horsham - RH13
Enquiry from: Alison S
Start Date: Immediate
i would like an inspection please to help identify the problem. are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: semi detached plea...
East Grinstead - RH19
Enquiry from: Sharon S
Start Date: Immediate
Damp issue resolved, I have pictures I can attach
Worthing - BN11
Enquiry from: Michele G
Start Date: Immediate
Black mould around the walls in the ground floor flat and mould on new staircase in upstairs flat.
Bognor Regis - PO21
Enquiry from: Louise B
Start Date: Immediate
Full damp and timber report required for mortgage company. Property is empty and keys are with local agent. Address is Flat 1, Gothic House The Steyne, Bognor Regis, ***
Lancing - BN15
Enquiry from: Hayley W
Start Date: Immediate
I am looking to purchase the above property and the homebuyers report has cited damp I would like to know how much it will cost me to fix the problem before I exchange contracts.
Bognor Regis - PO21
Enquiry from: Marney L
Start Date: Immediate
a full damp report needed
Littlehampton - BN17
Enquiry from: Laura G
Start Date: Immediate
I have damp throughout the property that im looking to get sorted.
Lancing - BN15
Enquiry from: Miles P
Start Date: Immediate
We have damp coming through a ceiling in our lounge and condensation through a chimney flue in our kitchen. We recently bought the house and it was empty for 18 months. Unsure if there is an issue or ...
East Grinstead - RH19
Enquiry from: Lesley R
Start Date: Immediate
Black mould on walls which has spread.
Lancing - BN15
Enquiry from: Abanoub M
Start Date: Immediate
Require damp clearing and damp proofing for 2 bed single floor bungolow. Potential damp proofing in loft
Horley - RH6
Enquiry from: Sarah N
Start Date: Immediate
Good morning, I have just moved to an old semi-detached property in Horley (built 1900) and I have noticed signs of rising damp on 2 walls in my dining room (around a blocked fireplace/ joint wall ...
Worthing - BN14
Enquiry from: Zanna M
Start Date: Immediate
Hi there, I would like to arrange a survey regarding condensation damp in our ground floor property, and the best course of action to resolve this. Happy to arrange a time for a property visit at your...
Bognor Regis - PO21
Enquiry from: Aisha T
Start Date: Immediate
Just had a Level 2 homebuyers survey completed, and damp issues have been flagged. Looks like there is no damp proofing in the external rear wall and internal walls may need treating.
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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.
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!
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