|Statement||by the Chartered Institute of Building and the Building Research Establishment 18 March 1981 at Princes Risborough Laboratory ... Aylesbury.|
|Contributions||Chartered Institute of Building., Building Research Establishment., Princes Risborough Laboratory.|
|The Physical Object|
|Number of Pages||61|
Scope of the book vii Some important definitions viii Acknowledgements viii 1 Introduction What is dampness? 1 Types of dampness 1 Condensation 2 Rain penetration 2 Rising damp 3 Construction moisture 3 Leaking pipes 3 Leaks at roofing features and abutments 3 Spills 4 Ground and surface water 4 Contaminating salts 4 Where is dampness apparent? 4File Size: KB. If the dampness has a tide mark on the wall, the dampness may be caused by rising damp or penetrating damp, leaking pipes or faulty roof. Treating condensation If the cause of the damp has been identified as condensation, the cure may be as simple as installing a good quality ventilation system that encourages the movement of the air from inside the building to the outside. Rain water can also penetrate through the roofs if the roof is of bad quality. Inadequate roof slopes or defective junction between roof slab and parapet wall may cause dampness Presence of gutter near the building will store the rain water and subsequently this water will create dampness in the external walls. Porous Walls — Aging bricks lose the ability to keep out rain penetration. Spalled Bricks & Degraded Mortar — Damage to brickwork allows water to penetrate. Building Defects — Defective guttering and downpipes, roof damage, dilapidated or poorly installed windows. In this case fix the root of the problem before applying Stormdry to boost your protection.
To identify the symptoms associated with dampness in walls of rising damp, surface condensation, water penetration. View full-text of dampness in walls of residential buildings in four. A CASE STUDY OF DAMPNESS IN A THREE BEDROOM RESIDENTIAL BUILDING AT DEDUAKO, KUMASI. fected the way water had risen in the walls. Introduction Dampness penetration is one of the most. Penetrating damp is caused by water leaking through walls. It tends to happen as a result of structural problems, such as faulty guttering or roofing, or cracks in external walls. Take a look at the gallery and read on below for a run down on what might be causing penetrating damp and how to fix each issue. In the event of walls being subjected to lengthy periods of heavy rain, in conjunction with external defects, this can easily result in water penetration through the external wall and soaking the insulation. This wet insulation then transmits the water onto the inner wall which results in damp areas on the internal wall.
Penetrating damp, which is also known as ‘rain penetration’, lateral penetration of damp through walls, roofs, windows, or left untreated, this can lead to more severe issues, such as wood rot, frost damage, and unsightly water marks on internal and external walls. What Causes Penetrating Damp? Walls. The difference between rising damp and penetrating damp as far as walls are concern is that the penetrating damp affects walls to any high creating patches. They may be worst at lower level due to the combination of rising and penetrating damp or just because the water . However, this tends to be readily apparent as you would normally see the defects in the roof covering, and the volume of water penetration would give rise to noticeable damp staining on the ceiling. If the dampness has a tide mark on the wall, the dampness may be caused by rising damp or penetrating damp, leaking pipes or faulty roof. Treating condensation. If the cause of the damp .