Extensions such as garage conversions will often require additional damp proofing to be added during the conversion, as the pre-existing garage will often 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 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 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 if the floor will be a solid or a floating floor. In some garages, the walls have already been damp proofed, but this might need to be updated as part of the conversion in order to comply with current building regulations. The walls will need to be damp proofed to be able to protect the brickwork from rotting gradually as moisture sets in. This is done by either making use of damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already present in the garage. Damp proofing is an important part of the building regulations that the garage conversion should adhere to, and so 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 |
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| Labour cost | £1,050 | |
| Material cost | £375 | |
| Waste removal | £75 |
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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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Tewkesbury - GL20
Enquiry from: Barbara S
Start Date: Immediate
Damp coming up both sides of inside wall
Gloucester - GL19
Enquiry from: Jeremy B
Start Date: Immediate
I have what appears to be rising damp on some downstairs internal walls. This is not a new problem but I would like it diagnosed and fixed
Cheltenham - GL52
Enquiry from: Christian W
Start Date: Immediate
Following a recent leak that is now resolved, there is a strong mouldy smell in the bathroom. I would like to diagnose the source of the smell and take action to remove it and any mould that may be pr
Gloucester - GL1
Enquiry from: Muhebbullah W
Start Date: Immediate
A 2 bedroom semi-detached property, rented. there is a leakage on the corner of a ceiling, someones tried before,fixed and leaking again
Property: semi detached
Cheltenham - GL52
Enquiry from: Angus C
Start Date: Immediate
We are looking to tank a ground floor room that suffers from an aquifer underneath when we have exceptional rain coming up through the concrete screed, & are looking for a tanking membrane to be put o
Property: detached
Cheltenham - GL50
Enquiry from: Peter W
Start Date: Immediate
An assessment!! For damp…
Cheltenham - GL54
Enquiry from: Sebastien M
Start Date: Immediate
I currently own a property in Northleach, a grade 2 and find that it is quite humid downstairs with a good bit of condensation in the morning. I would like to understand what it is going as we don't s
Stroud - GL5
Enquiry from: MIKI L
Start Date: Immediate
Hi, we’ve discovered a rotten timber damp issue under our floor. It appears to be caused by a drainage ditch outside the wall that’s collecting rainwater with no outlet, leading it under the house
Stroud - GL5
Enquiry from: Janet B
Start Date: Immediate
Had extensive survey prior to moving in. areas of damp in basement kitchen/room and one bedroom *** floor. survey available
Property: semi detached
Moreton-in-Marsh - GL56
Enquiry from: Lesley B
Start Date: Immediate
Not sure - some damp by the rear wall and in the kitchen
Stroud - GL5
Enquiry from: Rachel C
Start Date: Immediate
Would like to get a wall checked that looks quite damp and see how big an issue it is, and what we need to do to fix it
Moreton-in-Marsh - GL56
Enquiry from: Carole J
Start Date: Immediate
Flat 6 is in a block of flats called marsh court. we have a damp problem on a couple of walls and would like a free quotation to ascertain the problem and what can be done. if you could please email m
Tewkesbury - GL20
Enquiry from: Steve C
Start Date: Immediate
We have an issue in our downstairs toilet, where the paint is bubbling up and we also have a crack in the wall and some brown stains. i have sanded it all down, applied some damp proofing paint but af
Property: detached
Moreton-in-Marsh - GL56
Enquiry from: Andrea G
Start Date: Immediate
Survey of the property on ground floor this week and works to be undertaken ASAP
Wotton-under-Edge - GL12
Enquiry from: Carole W
Start Date: Immediate
Water penetration in 2 areas upstairs. We have tried to resolve it our selves but unsuccessful. Also need a damp proof course put in downstairs
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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!
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.
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.
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