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The damp proof course (DPC) is generally applied at basement levels, which restricts the movement of moisture through walls and floors. The selection of materials for the damp proof course and its various methods of applications in buildings is discussed.
This document discusses various methods for preventing dampness in buildings, including damp proof courses. It describes different types of damp proof courses that can be used, such as rigid, semi-rigid, and flexible courses made from materials like slate, asphalt, and plastic sheeting.
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- Introduction
- Identifying The Damp Proof Course
- Bending The Rules
- Workarounds
There are a number of alternatives to the modern dpc-on-a-roll, and these are sometimes found on older properties, particularly those built prior to the Second World War. The most commonly encountered alternatives are the brick damp course and the slate dpc. The brick dpc uses a clay brick with a very low absorption rate as a barrier to rising damp...
Where the dpc doesn't jump out and announce its presence, there are a few key indicators that can help in identifying the position. 1. - On many established properties, the dpc will usually be somewhere between 100mm and 450mm above the paving or ground level 2. - There is often a difference in brick type or brick appearance at the dpc 3. - Air-bri...
The Building Regulations require at least 150mm between the dpc and the ground or any paving. This is what is known as 'Best Practice'. However, there are situations where it is just not possible, or practical, to maintain this regulation. On professional work, and new build projects, every possible effort should be made to ensure the 150mm rule is...
The Dry Area arrangement
If you look carefully, you can see the biggest drawback of this solution - the channel becomes a collecting point for fag ends and other litter.
Drained channel arrangement
This is a workaround used where there is a problem with accumulation of litter or other concerns that render an open 'dry area' channel impractical. A land drainage pipe, usually a perforated plastic type, is laid at the base of the channel, connected to the SW drainage system at a convenient point and covered with a clean gravel to a level no higher than the dpc. The walling may be protected by a drainage composite or tanking. This is a 'last-resort' workaround, usually restricted to special...
Safeguard Europe offers training courses covering both above-ground damp-proofing and basement conversion. The courses are performed by our qualified and highly experienced technical staff.
Nov 7, 2023 · A Chartered Surveyor's essential guide to damp proof courses (DPCs) explaining their purpose and the steps to take if you suspect yours has failed.
- Ian Rock
Aug 13, 2024 · A damp proof course (DPC) is a protective layer near the bottom of the walls of a building that prevents rising damp. Signs of a faulty DPC include visible dampness, mould growth, and structural damage to walls.
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A Damp Proof Course (DPC) is a continuous barrier installed in buildings to prevent capillary climb of water in walls. Current building regulations state that walls must resist the passage of water from the ground and that this requirement can be reached if a damp proof course is provided.
