Designed for use on metal or timber structures where there is easy access to the underside of the roof. This product provides a cost effective and flexible means of attachment to a timber structure. This anchor is suitable for a tile roof with timber rafters.ï¿½ï¿½Tested to Australian and New Zealand Standard AS/NZS 1891.4. Manufactured from 316 Stainless Steel/Marine Grade Aluminium. Designed to fit a range of roof sheeting profiles.ï¿½ï¿½Rated at 22kN.