FAQ

The U-value of a product measures how effective its insulation properties are. The lower the U-value, the better the insulation. As a guide, a standard double-glazed window typically has a U-value of 2.8 W/m². Our super insulating units achieve a U-value of 1 W/m².

Sound insulation is important when choosing your roof lantern. There are four main factors that can limit rain noise: The number of panes of glass — noise levels are reduced with each additional pane The distance between the panes — the greater this distance, the better your sound insulation will be The thickness of each pane of glass — thicker panes absorb more noise How well your lantern is sealed against the roof. Further insulation in the skylight’s structure help keeps rain noise to a minimum.

Our aluminium roof lanterns can go up to 3000mm in width and a length up to 6000mm. We can also produce the PVCu Skypod skylight up to a length of 8000mm. Please note, larger roof lanterns do require the introduction of additional glazing bars.

Aluminium roof lanterns and PVCu skylights are usually delivered to your site within 7 - 10 working days, however this can sometimes be longer depending on manufacturing load and delivery schedules. Please be advised that glass may occasionally arrive a day or two after the frame.