Aluminium Doors.
Thermal Performance
Metal Technology's range, in conjunction with the correct glass
specification, is designed to aid compliance with the latest thermal
requirements of the current building regulations. The polyamide
thermal break profiles have been specifically designed to minimise
heat transfer across the door profiles.
Thermal performance is further improved through the introduction of
specially designed foam profiles. These reduce radiation heat loss
across the air cavities within the door profiles to provide
additional thermal enhancement.
Materials
Aluminium profiles are extruded from aluminium alloy 6060T6, T5 or
T4 complying with the recommendations of BS EN 12020-2 / BS EN
755-Parts 1 to 9. Polyamide thermal breaks are produced from glass
reinforced nylon sections designed to withstand temperatures in
excess of 200°C allowing the sections to be powder coated after
thermal breaking.
Construction
Frame and door sash members are mitre cut at 45 degree. Corners are
reinforced with extruded aluminium crimping cleats and corner
braces. A secure joint is formed by pneumatically crimping into the
extruded crimping cleat. Mullion and transom bars are square cut,
shaped and fixed securely to the frame by means of stainless steel
screws and fixing cleats. All frame joints are sealed during
construction against entry of water using Metal Technology's two
part adhesive. Metal Technology recommend that only A2 or A4
austenitic (300 series/class 70) stainless steel fixing screws are
used in the assembly of their products.
Glazing
This system offers internally glazed sashes and can accommodate
glazing units from 24mm to 34mm units.
click here for System 5-20D Hi+ brochure click here for technical manual
