Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture·Page 36·6.33
Door thresholds in external walls - weather protection guidance
Weather protection of accessible door thresholds should follow guidance in BRE Good Building Guide 47 and TSO Accessible thresholds guidance, with BS 8300 providing additional guidance for entrance thresholds serving disabled people.
Guidance on weather protection of accessible thresholds is given in –
(a) BRE Good Building Guide 47 Level external thresholds: reducing moisture penetration and thermal bridging; and
(b) The Stationery Office (TSO) document Accessible thresholds in new buildings: guidance for house builders and designers.
See also BS 8300 which provides guidance on the design of entrance thresholds to meet the needs of disabled people.
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