Extensions including garage conversions will often require extra damp proofing to be installed as part of conversion, as the existing garage will typically have a single skin design for walls and floors, which was not manufactured to conform to building regulations for habitable rooms. This damp proofing should be added to walls and floors. In addition, 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 by using 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, below the new floor, or as part of both, depending on if the floor will be a solid or a floating floor. In a few garages, the walls have already been damp proofed, but this may have to be improved as part of the conversion to be able to adhere to current building regulations. The walls will need to be damp proofed to be able to safeguard the brickwork from rotting gradually as moisture sets in. This can be accomplished by either applying 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 integral part of the building regulations that the garage conversion should adhere to, therefore is it important to ensure 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
| 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 Trowbridge in May 2026
Requests for Damp proofing quotations in Trowbridge in May 2026. 0% change from April 2026.
Requests for Damp proofing quotations in Wiltshire in May 2026. 0% change from April 2026.
Trowbridge is the actual county town of Wiltshire, England around the Biss in the west of the county, 8 miles (13 km) south east of Bath, Somerset, from which it is actually divided by the Mendip Hills that rise 3 miles (4.8 km) to the west.
Hello and welcome to my page. We are a Family run building business with over 20 years in the building industry. We offer a verity of services this includes: Damp proofing specialists, Bricklaying Landscaping Groundwork’s/ drainage Roof repairs Poi...
Knowledgable about the problem.
Trowbridge - BA14
Enquiry from: Patrick T
Start Date: Immediate
Edwardian terrace. Damp on interior kitchen wall. We also need the outside of this wall rendering
Trowbridge - BA14
Enquiry from: Sarah P
Start Date: Immediate
we have discovered a number of places on the ground floor suffering from damp. please could you arrange for someone to come and give us an estimate to get it fixed. are you the property owner: owner o...
Trowbridge - BA14
Enquiry from: David L
Start Date: Immediate
Outside wall .. noticed inside a bedroom bottom floor that mould is appearing at the top of the skirting. There has been a vent that has been plastered over sometime ago... Also the guttering has bloc...
Trowbridge - BA14
Enquiry from: Sonya E
Start Date: 1 to 3 months
How many rooms do you need damp proofing: 5+ Rooms Are you the property owner: Owner of the property Property Type: Detached Time scale: 1-3 months Please call to appoint
Trowbridge - BA14
Enquiry from: Martin B
Start Date: Immediate
a professional appion on growing mold in a flat to see weather its dangerous for my 4 week old grandson mould is now growing on 3 piece
Trowbridge - BA14
Enquiry from: Emma A
Start Date: Immediate
Mould removal mainly in bathroom but possibly other areas. Property is tenanted. Do not visit/call tenant directly. Are you the property owner: Owner of the property How many rooms do you need damp p...
Warminster - BA12
Enquiry from: Kevin F
Start Date: Immediate
I have rising damp and would like a quote
Melksham - SN12
Enquiry from: Alun S
Start Date: Immediate
After a house survey it has been reported that there is high moisture readings and the damp course may have broken down. The house is a 1930's semi, so understanable really. I'm looking for a quote ...
Bradford-on-Avon - BA15
Enquiry from: Amanda B
Start Date: Immediate
hello we have two windows in the same room. one had issues with the gutter which is now sorted. not sure if there is an underlying issue with the other. i think the damp course has been breached on b...
Bath - BA1
Enquiry from: Helen S
Start Date: Immediate
Breach of damp roofing at base of stairs.
Radstock - BA3
Enquiry from: Thomas Y
Start Date: Immediate
A survery has identified widespread damp at ground-floor level and concerns that the existing damp-proof course may not be operating effectively. There are also indications of possible ongoing moistur...
Frome - BA11
Enquiry from: Melissa T
Start Date: Immediate
Rising damp issue needs survey
Frome - BA11
Enquiry from: Jess P
Start Date: Immediate
Is it possible to have someone come and look at the room I have damp in and see if they can work out what the problem is? I think it is coming in from outside but am worried about the white fur that k...
Bristol - BS30
Enquiry from: Rianne S
Start Date: Immediate
Area of damp above tiled floor/tiled skirting in kitchen. Started a few weeks ago
Frome - BA11
Enquiry from: Natasha A
Start Date: Immediate
Obvious damp issues in a couple of the rooms. We're looking for help identifying what the issue is, what needs to be done to fix it and a quote for the associated costs.
Westbury - BA13
Enquiry from: Peter K
Start Date: Immediate
Assess damp on exterior west facing wall. Inside dry lined. Wall is very thick, 220 years old. Give Estimate of work required and cost
Frome - BA11
Enquiry from: Monica N
Start Date: Immediate
There are a few ongoing damp issues: Suspected rising damp along the external wall of the house. Historical leak from bathtub that we would like structural damage to be assessed Leak on bedroom ce...
Radstock - BA3
Enquiry from: Holly S
Start Date: Immediate
We have a damp area on an exterior wall in the kitchen and also an interior wall.
Bath - BA2
Enquiry from: Alice L
Start Date: Immediate
i've been in the house 3 years and i suspect when i viewed the property, a treatment/anti-damp paint was applied to disguise the problem. after moving in, a small section of damp appeared in a small a...
Radstock - BA3
Enquiry from: Huw B
Start Date: Immediate
Gable end wall has damp issues
Answer a few quick questions, so we can match you with local damp proofing specialists who can help.
Get free, no-obligation local damp proofing quotes from 4 verified damp proofing specialists working in Trowbridge.
Compare customer reviews, services and prices, and choose the right tradesperson for you.
Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.
Good easy way to find a selection of trades you need all in one place.
Love Local Quotes it's a big part of my Business I would recommend to anyone
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.
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!
We can help you get more damp proofing work with our qualified job leads and boost your business.
Join today