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HYLOAD DPC AND CAVITY TRAY SYSTEMS 23<br />
Protection against<br />
ground gases<br />
<strong>Hyload</strong> Original or<br />
Permabit DPC cavity tray<br />
DPCs must project 5 mm beyond the<br />
external face and must be bedded on<br />
both faces with mortar.<br />
All joints between lengths of DPC, and<br />
DPC and Preformed Cloak Units must<br />
be lapped a minimum of 100 mm and<br />
bonded with <strong>Hyload</strong> DPC Lap Adhesive<br />
or <strong>Hyload</strong> DPC Jointing Tape.<br />
The cavity tray should step down or<br />
slope across the cavity not less than<br />
150 mm towards the external leaf.<br />
Insulation omitted for clarity.<br />
Gastite DPC supported<br />
across the cavity<br />
Gastite DPM or<br />
Gastite LL<br />
Typical horizontal<br />
movement joint<br />
Typical vertical<br />
movement joint<br />
Ruberoid recommends where<br />
ever possible that DPCs do not<br />
span vertical movement joints.<br />
Ruberoid High Performance DPC<br />
Ruberoid Type 3<br />
Preformed Cloak Unit<br />
Technical hotline: 0800 587 7391 www.ruberoid.co.uk
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