The Skylux skylights are 3-, 4- or even 5-walled. This makes them super-insulating. You save up to 66% more energy than with a double-walled skylight. This way, you keep light and heat inside and avoid a hefty energy bill.

To choose the correct curb (upstand), you start from the roof opening (effective opening in the roof) on the one hand and the desired insulation value on the other. There are 2 types in the Skylux range: straight and splayed curbs.

The advantage of a straight curb is that it can be placed over an existing curb in order to increase the insulation value. This is therefore often used in refurbishment projects. 

The splayed curb has the advantage of a more even light distribution thanks to the slanted incidence. The skylight that is placed on this curb is also cheaper because it is smaller.  

Discover our super insulating flat roof window with double glazing!

iWindow2 is a flat skylight with a sleek and modern design. The Skylux iWindow2 excells in insulation (Ug-value of 1.0 W/m²K) thanks to the compact and insulating PVC frame and the super insulating safety glass HR++.  You save up to 63 % of energy compared to with a classic double-walled plastic skylight. It also guarantees maximum daylight. The Skylux glass skylight is available in many different rectangular or square dimensions and in a fixed or openable version. Also available in a size of 1 by 3 metres. Ideal for a kitchen refurbishment.

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Krijg je premie voor een platdakraam? Eén cijfer bepaalt alles

Can you get a subsidy for a flat roof window? One number determines everything

A skylight or flat roof window may qualify for Mijn VerbouwPremie, but only if the insulation value is no more than 1.0 W/m²K. We explain how this works and which Skylux solutions stay below that limit.

Read moreabout Can you get a subsidy for a flat roof window? One number determines everything

iWindow platdakraam: de held op uw platte dak

iWindow flat roof window: the hero on your flat roof

Discover in comic-strip form why the Skylux iWindow flat roof window beats darkness and summer heat. Flat glass, HR+++ insulation, solar-powered and Matter compatible.

Read moreabout iWindow flat roof window: the hero on your flat roof

Skylux op Polyclose 2026: outdoor living met Calista in de hoofdrol

Skylux at Polyclose 2026: outdoor living with Calista in the leading role

From 14 to 16 January 2026, Skylux will be present at Polyclose, the leading trade fair for window, door, sunblind, facade and access technology. You can find us at stand 1172, where this year we are focusing on outdoor living.

Read moreabout Skylux at Polyclose 2026: outdoor living with Calista in the leading role