Heads

All cast stone heads should be installed in accordance with BS 5628-3. Heads are non-load bearing and appropriate structural support should be provided to carry the imposed loads from above.  One piece and multi-stone heads can be supported from below on a box-type steel lintel.

Self Supporting Heads
One piece heads can be self-supporting. They will require a steel lintel, longer than the cast stone head, to transfer the imposed loads from above into the adjacent masonry. A slip plane will be required at the end of the cast stone head as well as a soft joint between the top of the head and the steel support lintel.

DPCs and Cavity Trays
It is important to provide a waterproof barrier over all heads that will channel and discharge water to the outside face of the masonry. A cavity tray should be inserted over the cast stone head, this will act as a DPC and also as a slip plane.

Advice offered by Amber Precast Ltd is given in good faith and it is to the best of our knowledge accurate and true, but is offered without guarantee.

If you require more information please contact us on:
tel: 01773 540707 email: info@amberprecast.co.uk

Technical Data Ref: TDS/004 January 2010