Damp Proofing in Cardiff

Compare Damp Proofing Prices in Cardiff

Damp Proofing in Cardiff

Extensions such as garage conversions will often require supplementary damp proofing to be added during the conversion, as the pre-existing garage typically has a single skin design for walls and floors, which was not manufactured to comply with building regulations for habitable rooms. This damp proofing will need to be added to walls and floors. Moreover, the roof of the garage conversion will require water proofing. The damp proofing for the floor of the garage conversion will in most cases be achieved by utilising a damp proof membrane. This membrane can 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 a few garages, the walls will have already been damp proofed, but this may have to be updated as part of the conversion in order 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 is performed by either applying damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls already present in the garage. Damp proofing is an integral part of the building regulations that the garage conversion should adhere to, and so is it necessary to ensure that your garage conversion makes use of appropriate damp proofing methods.

Average Damp proofing cost in Cardiff

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

Average price per Damp proofing job in 2026

Avg. price low	Avg. price low £1,125
Avg. price	Avg. price £1,500
Avg. price high	Avg. price high £1,725

£1900

£1425

£950

£475

£0

Prices based on actual Damp proofing costs for Cardiff, as reported by local LeadsDoWork members.

Damp proofing installation cost in Cardiff 2026

	Labour cost	£1,050
	Material cost	£375
	Waste removal	£75

Time frame: 3-5 days

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Cardiff

Cardiff is the capital of Wales and also the country's largest city too, having a populace of close to 350,000. Cardiff is situated in the historical county of Glamorgan and is a very popular visitor destination with 18 million visitors noted in 2010. Being the capital city of Wales, house costs tend to be much higher compared to the rest of the country and householders are keen to carry on bettering their homes so as to hold on to this value.

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Damp Proofing in Cardiff

Compare Damp Proofing Prices in Cardiff