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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.
- What Are The Causes of Damp in Buildings?
- What Problems Does Damp Cause?
- What Is A Damp-Proof Course?
- Are Damp-Proof Courses Required?
- Inserting A Damp-Proof Course in An Existing Building
- Related Articles on Designing Buildings
The most common causes of persistent damp in buildingsare: 1. Condensation (surfaceor interstitial). 2. Penetrating damp. 3. Rising damp. For more information see: Damp in buildings. Rising damp is caused by capillary action drawing moisture up through the porous elements of a building’s fabric. Rising damp, and some penetrating damp, can be caused...
Damp in buildingscan cause a number of serious problems, such as: 1. Damppatches. 2. Mould growth, which is a cause of respiratory allergies. 3. Mildew, salts, stainingand ‘tide marks’. 4. Damage to surface finishes. 5. Corrosion and decay of the building fabric. 6. Slip hazards. 7. Frost damage. 8. Poor performance of insulation. 9. Damage to equi...
A damp-proof course is a barrier, usually formed by a membrane, built into the walls of a property, typically 150 mm above ground level, to prevent damp rising through the walls. Historically, damp-proof courses may have been formed using bitumen, slates, lead, pitch, asphalt or low absorption bricks. They emerged during the Victorian era and are c...
Damp-proof courses are now required in the construction of new buildings to prevent rising damp and in some situations to prevent penetrating damp. Approved document C of the Building Regulations, Site preparation and resistance to contaminants and moisture, suggests that a damp-proof course may be a, ‘…bituminous material, polyethylene, engineerin...
The absence of a damp-proof course in older buildings can be rectified by creating a moisture-impermeable layer, either by the insertion of a damp-proof course, or by the injection of water-repellent chemicals. Treatment generally also involves remedial work to any corroded or decayed elements of the building fabric, as well as hacking off and repl...
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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ing radioactive gas radon and gases produced by some soils and minerals can be a hazard.0.6 Sections 4, 5 and 6 of this document cover Requirement C2 and deal. ith resistance to moisture under the headings ‘Floors’, ‘Walls’ and ‘Roofs’. Moisture can rise from the ground to damage floors and the base of walls on any.
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How to install a damp proof course and advice on repairs to damp proofing if your damp course has failed. Damp proofing advice and recommended DPC products including Vertical DPC and the injection technique using cream DPC.
Part 1 – Rising Dampness. Part 2 – Assessment of Dampness in Buildings. Part 3 – Treatment of Rising Damp. Part 4 – Replastering Following Insertion of a Damp‐proof Course. Part 4A – Replastering System No.1: Dryzone Express Replastering System. Part 4B – Replastering System No.2: Dryzone Damp-Resistant Plaster. Part 5 – Research and Development
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What is damp proof course (DPC)?
What is a horizontal damp proof course?
How do I install a damp proof course?
What is a damp-proof course?
How high should a damp-proof course be?
Do I need a damp proof course in my extension walls?
You will need to provide a damp proof course in the extension walls at least 150mm above ground level comprising of impervious sheet material, engineering brick or slates in suitable cement...
