ST0743
Materials used in fenestration installation - aluminium, steel, timber, composites or PVC-U; their mechanical properties, uses and design limitations. Ancillary items - for example fixings and fastening, handles, hinges, locks, ventilators and louvers; their purpose and how/where they should interact. Weatherproofing products and systems - for example, gaskets, DPCs, membranes, sealants, weather seals and drainage systems; their purpose, compatibility, conditions for storage and use (shelf-life)