RdSAP 9.10 - Hard to treat cavity walls
Posted by Mike Gordon on 24 July 2015 03:15 PM


An access issue is any façade where it is not possible to pitch a 5 metre ladder considering health and safety requirements. This includes e.g. a narrow passageway, a busy thoroughfare a building of more than 2 storeys, a conservatory or large outhouse attached to the property, etc.

A narrow cavity is indicated by a stretcher bond brick pattern with wall thickness 220 to 250 mm.

Possible high exposure should be recorded for any dwelling in exposure zones 3 or 4 (see map at end of these conventions). If in doubt record as possible high exposure.