Fitting Requirements
The tie should be turned and locked into the fixing channel allowing height adjustment to match coursing.
Lengths of cavity closer can be joined using the G245, ensuring that the butt joints slope down at 45 degrees to the outer leaf.
Cavity closers can be made into frame fromers by joining the adjacent lengths with a G246 slotted into the fixing channel.
Certifications
Manthorpe Thermal Cavity Closers - BBA Certificate - 96-3226.pdf
Regulations & Standards
BS 5250:2011 Control of condensation in buildings.
Approved Document L1 & L2:
Conservation of fuel and power.
NHBC Technical Guidance 6.7:
Doors, Windows & Glazing
BRE Digest Report 262: Thermal Insulation: Avoiding Risks.
BRE Information Paper IP 1/06: Thermal Bridging at Junctions & Openings