Extensions such as garage conversions will typically require extra damp proofing to be added during the conversion, as the existing garage will typically have a single skin design for walls and floors, which was not designed to be in accordance with building regulations for habitable rooms. This damp proofing will need to be put into walls and floors. Additionally, the roof of the garage conversion will need water proofing. The damp proofing of the floor of the garage conversion will most likely be performed by employing a damp proof membrane. This membrane will 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 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 should be damp proofed in order to protect the brickwork from rotting gradually as moisture sets in. This can be performed by either implementing 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 will need to adhere to, and so is it important to ensure that your garage conversion incorporates 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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| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
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Waterlooville - PO8
Enquiry from: Terry P
Start Date: Immediate
I have an air brick that is no longer required as I no longer have a gas fire. I would like it sealed both inside and out. I'm getting mould on the interior wall from the cold air and warm air inside
Fareham - PO16
Enquiry from: Jacqueline W
Start Date: Immediate
Rising damp front of house-tide mark on walls and crumbling walls! Help needs attention!
Fareham - PO16
Enquiry from: Rosie E
Start Date: Immediate
A survey on one of the walls in the kitchen. the wall is showing discolouration and the paintwork is peeling off. no evidence of mould but that part of the wall is cold to touch also
Property: terrace
Southampton - SO32
Enquiry from: Annette B
Start Date: Immediate
We have flaking walls near chimney breast of our old house recently moved in and looking to make good. Have issues in other rooms too with a musty smell
Cowes - PO31
Enquiry from: Jacqueline G
Start Date: Immediate
A skirting board in our dining room has rotten through. It is under a radiator but we have not seen signs of a leak. We know the neighbouring property had a damp issue in the adjoining area so are con
Chichester - PO19
Enquiry from: Abi C
Start Date: Immediate
We are hoping to move to this home. We have had our survey and it has been flagged that there are signs of rising and penetrative damp. We would like a quote for the work asap please
Newport - PO30
Enquiry from: Andy B
Start Date: Immediate
We require a 'damp' survey of the three ground floor walls of our 2-bed Newport terraced home. Our homebuyers survey six months ago recorded some damp readings. There is now evidence of damp on one se
Chichester - PO20
Enquiry from: Gina F
Start Date: Immediate
Surveyor has detected damp in the living room and between the garage(part of an extension)
Sandown - PO36
Enquiry from: Btyn D
Start Date: Immediate
We would like someone to asses damp in the walls of our downstairs toilet, part of our porch extension to the house. Also the outside wall of our house, next to the porch extension
Emsworth - PO10
Enquiry from: Clelia M
Start Date: Immediate
Damp proofing of 2 ground floor rooms and dampness check of 2 bedrooms on the first floor
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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.
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.
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!
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