Extensions including garage conversions will usually require supplementary damp proofing to be added through the conversion, as the 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 will have to be added to walls and floors. Furthermore, the roof of the garage conversion will require water proofing. The damp proofing of the floor of the garage conversion will usually be achieved by utilising 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 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 a few garages, the walls 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 safeguard the brickwork from rotting slowly as moisture sets in. This is accomplished by either applying damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already in the garage. Damp proofing is a part of the building regulations that the garage conversion should adhere to, therefore 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
| Avg. price low | Avg. price low |
|---|---|
| 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 Harpenden in October 2024
Requests for Damp proofing quotations in Harpenden in October 2024. 0% change from September 2024.
Requests for Damp proofing quotations in Hertfordshire in October 2024. 0% change from September 2024.
Harpenden is a town in Hertfordshire, England. The town's population is just under 30,000. Harpenden is a relatively affluent commuter town, with a direct rail connection into London and property prices are well above double the national average. Geographically it is located between two much larger neighbouring towns: Luton and St Albans. It is flanked by the villages of Redbourn and Wheathampstead.
Harpenden - AL5
Enquiry from: Hen O
Start Date: Immediate
surveyor point out that there is evidence of rising damp in some walls. we would like to fix it. please let me know if you have time to come and have a look at the house later this week. thank you. a...
Harpenden - AL5
Enquiry from: Ruth P
Start Date: Immediate
damp-proof / tank an air-raid shelter under a house (now used as a cellar) and deal with existing severe damp (including rotting wood etc). put a damp-proof coating under an inlaid doormat. treat wood...
Harpenden - AL5
Enquiry from: Alex P
Start Date: Immediate
hi, we have a couple of issues with damp in the ground floor of our property. in one room the damp is creating a water mark approx. 1 metre up the wall, in the second room the damp is showing at a low...
Harpenden - AL5
Enquiry from: Leslie A
Start Date: Less than one month
Damp proofing to utility room Are you the property owner: Owner of the property How many rooms do you need damp proofing: 1-2 Rooms Property Type: Terrace Time scale: Less than one month Please call...
Harpenden - AL5
Enquiry from: Peter d
Start Date: Immediate
Mould removal, painting, etc.
Harpenden - AL5
Enquiry from: Molly G
Start Date: Immediate
We have patches of black mold, mainly on the ceiling, caused by condensation in our our outhouse. The old outhouse is attached to our house, it's 3/3 metres wide.
Rickmansworth - WD3
Enquiry from: Anna S
Start Date: Immediate
Damp patches on the ceiling. To remove cause
Watford - WD19
Enquiry from: Sajida J
Start Date: Immediate
We have a rising damp issue from the outside of our bungalow. We can see the damp from the interior of the house. Will somebody please come over and advice us?
Rickmansworth - WD3
Enquiry from: Emma T
Start Date: Immediate
Check what is causing mould and treat if possible
Watford - WD18
Enquiry from: Charlie C
Start Date: Immediate
Hi, I have some damp issues at my house, no mole yet and seems fresh but fairly large damp spots appearing. I'd like someone to come in, take a look at the issues and work out how to fix it. ...
Watford - WD19
Enquiry from: Wei-Yee L
Start Date: Immediate
we have water marks in the front and bottom corner of our front window and also water mark in the corner of our back window. our window installer confirmed that the windows are sealed and roofer also ...
Watford - WD19
Enquiry from: Konstantin O
Start Date: Immediate
mould near windows and strong condensation in the mornings. it could potentially be due to leaks we cannot see. the property is older and had some rising damp issues several years back. we need to fig...
Borehamwood - WD6
Enquiry from: Susan L
Start Date: Immediate
not sure what’s needed no sign of damp inside but green mould growing on outside wall are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property t...
Rickmansworth - WD3
Enquiry from: Adrian W
Start Date: Immediate
Small area of damp in living room and bedroom above.
Rickmansworth - WD3
Enquiry from: Richard G
Start Date: Immediate
mould removal on walls, skirtings and window-sills next to windows - and repaint in white. can provide photos of affected areas in the 1 bed flat. are you the property owner: owner of the property how...
Stanmore - HA7
Enquiry from: Bogdan P
Start Date: Immediate
I need a 4 yard skip to put bricks and cement
Rickmansworth - WD3
Enquiry from: Stuart M
Start Date: Immediate
small area in hallway plaster blown and damp , area is above where air brick sits are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: ...
London - NW7
Enquiry from: Ruby R
Start Date: Immediate
we would like a damp survey of a 2 bed flat how many rooms do you need damp proofing: 1-2 rooms property type: semi detached are you the property owner: owner of the property please call to appoint
Rickmansworth - WD3
Enquiry from: Oliver B
Start Date: Immediate
Rising damp. Condensation I think. Rot and mould. One one side of the house.
Borehamwood - WD6
Enquiry from: Rene G
Start Date: Immediate
damp survey throughout the house are you the property owner: tenant (with permission) how many rooms do you need damp proofing: 3-4 rooms property type: semi detached please call to appoint
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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.
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!
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.
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