BUILDING CPD EFFECTIVE WATERPROOFING

摘要

All waterproofing has one of two basic aims: either to limit or to completely prevent the passage of water in or out of a structure. Most large structures such as dams and tunnels fall into the first category, as they have an allowable water loss or leakage. Even domestic housing allows a certain amount of vapour transmission through the fabric of the building. The second category includes structures needing complete watertightness, such as swimming pools - particularly on rooftops - and basements that might be used to store moisture-sensitive products such as food or documents.