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Deflecting penetrating water to the outside of external walls
6.8NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
External solid and cavity walls should be constructed to deflect penetrating water towards the outer face of the wall such as in the following locations – (a) below copings at the top of walls (see Di
moisture-resistanceglazingDamp proof courses at obstructions and openings
6.32NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
Damp proof courses should be provided to direct moisture towards the outside – (a) where the downward flow of moisture would be interrupted at an obstruction, e.g. at a lintel (see Diagram 6.3(b)); (b
dwellingnon-domesticprotection-from-fallingglazingmoisture