Door and window frames to overlap cavity closer by minimum of 40mm.

Door frame straps fixed to block work using plug and screw.

Straps should be installed with a fall to the external.

Fitted within 150mm of the top and bottom and at a maximum 600mm centres.

Cavity closer sealed to assist with preventing air leakage.

Door-set placed centrally within the opening.

External door-sets should be fixed between 150mm – 250mm from the corners.

At maximum centres of 600mm with no less than 4 fixings per jamb.

Fixings must be a minimum of 120mm in length and at least 50mm penetration into plugged masonry outer leaf.

Openings to internal walls should be constructed around an appropriately sized former to ensure the correct size.

Ply to be fixed around the opening and plasterboard cut tightly to the ply.

Fill between packers with foam filler – Note – If it is a fire rated door, the gaps should be fully filled.

Door frame installed at second fix.

Frame fixed directly into ply.

Fixed at 600mm centres and 150mm from the top and bottom.

Doors fitted level, with a maximum gap against jamb of 4mm for non-fire rated doors.

A minimum 10mm gap between the finished floor and door.

Ensure hinges and door handles are level and equal to both sides on double doors.