The below is a detailed glossary of terms, relating to windows and window installations in alphabetical

Thermosplastic glazing material. Air Infiltration:

A light weight metal used for building components. (eg: siding, soffit, fascia, capping coil, rain gutter, window profiles) Arch-Top:

An inert, non-toxic gas used in insulating glass units to reduce heat transmission. Astragal:

Window with sash swinging outward from bottom. Balance:

A combination of window units that projects to the exterior. Usually features a large center unit with two flanking units at 30 degree or 45 degree angle to the wall. Bow:

A combination of window units that projects to the exterior. Usually features a large centre unit with two flanking units at 90 degree angles to the wall. Brockmould:

A thin covering material, of metal or vinyl that is fitted over another building component for weather protection and finished appearance. Also used as a flashing to prevent rain water penetration. Ca [..]

Window with sash cranking outward, to the right or left. Casing:

A compound for filling joints and sealing cracks to prevent leakage of water and air. Cellular PVC: