Skylight Systems

Aluminium skylights bring daylight into wide atriums, winter gardens, factory offices and other large rooms. The roof can be a single slope, a double pitch, a barrel vault, a dome or a pyramid, following the architectural design.

A skylight takes direct solar radiation, snow load, wind suction and heavy rain, more than a vertical facade. The engineering is built around L/200 and L/300 deflection limits, condensation control and water tightness.

Frame Types and Overhead Glass

To span wide openings without columns, the primary structure is a steel frame of box or I/U sections. Aluminium skylight adaptor profiles sit on that steel and form the glazing rebates. Expansion gaskets take up the difference in thermal movement.

Warm indoor air meeting cold glass produces condensation. Mullions and transoms with condensation channels stop that water dripping inside. Any water that enters is stepped down the profile channels to the eaves gutter.

Over occupied space the outer pane is hail-resistant tempered solar-control glass and the inner pane is laminated safety glass, so it does not fall if it breaks. A typical build-up is 6 mm tempered solar-control glass, a 16 mm cavity, and 4+4 mm laminated glass.

Concealed motorised vents can be built into the skylight without breaking the roofline. In a fire they extract smoke with 24 V actuators to EN 12101-2. Day to day they provide natural ventilation.