Duotherm - Casement Windows

This specification defines materials, construction, finishes and hardware for the Duotherm elite Casement Window, which conforms generally with BS 4873 specification for aluminium alloy windows. Windows described in this specification are suitable for both replacement windows into existing buildings and installation into new building work, and are designed to allow for fixing direct to masonry or into conventional sub frames of Timber or PVC-U.


Materials

Aluminium Profiles.
Profiles are extruded from 6063 T6 alloy and comply with the recommendations of BS 1474.
Sections are pre-treated and finished:-
anodised to BS 3987, Grade AA25 to a natural self colour and other agreed colours.
polyester powder organic coating to BS 6496 in White 9910 high Gloss finish.
polyester powder organic coating to BS 6496 in Havana Brown 8912 Satin finish.
polyester powder organic coating to BS 6496 in Black 9005 matt finish.
polyester powder organic coating to BS 6496 in agreed colours, matt or gloss finish
woodgrain effect finish in mahogony and light oak colours.

PVC-U Profiles
Profiles are multi-chambered offering marvellous insulation properties and are extruded from high grade window material.
Sections are finished either in a solid white high gloss or woodgrain efect in mahogony and light oak colours.
Bearing Devices and Hardware
All opening vents are hung on concealed Stainless Steel variable angles friction stays and fitted with (1) cockspur or (2) espagnolette or (3) espagnolette shootbolt locking mechanisms.
To limit the opening, restrictor stays shall be fitted. The above shall be manufactured from material meeting the requirements of BS 4873.