Rectangular roof lanterns

In short: The classic double-hipped lantern: a ridge, four sloping sides and the most size choice. Guide prices start from £1,295 including VAT, supply only.

When is a rectangular lantern the right choice?

Choose rectangular when your roof opening is longer than it is wide, which is the case for most single-storey rear and side extensions. A 1000 × 2000 mm lantern over a dining table or a 1500 × 3000 mm lantern along a kitchen island are typical examples.

Because the ridge runs the long way, the hipped ends stay short and the sloping sides catch light from the brightest part of the sky across the whole day. That is why rectangular lanterns tend to feel brighter than a flat rooflight of the same footprint.

How is it sized?

Lanterns are sold by the external size of the kerb or upstand they sit on, width first then length. Measure the outside of the upstand, not the hole in the ceiling. If you are still at the drawing stage, size the kerb to suit a standard lantern and you will usually save money and lead time.

Above about 3 metres long, most ranges add intermediate rafters to carry the glass, which adds a little to the price and a little more frame to the view. Our configurator shows the rafter layout as you change the size.

What does a rectangular lantern cost?

Guide prices for the common sizes are shown below, including VAT, for supply only with self-cleaning double glazing in a stock colour. The fixed price for your exact size, glass and colours is confirmed in writing on your quote before anything is ordered.