Modern Flat Roof Extension

What is a flat roof extension?

Available in a number of square or rectangular sizes to suit your individual project, our Flat Skylight is designed to deliver maximum, uninterrupted sightlines whilst flooding the space with warming natural light. Fusing cutting-edge technology with minimalist charisma, these fixed seamless skylights sit flush (flat) to the internal plasterboard, creating a fabulously frameless appearance inside and a modern, streamlined exterior. Our modern flat roof extensions also make the ideal accompaniment to traditionally styled properties seeking classic elegance with a statement-making pitched lantern roof option. Combined with a plethora of bespoke design options, any look can be achieved, and any style of property can be enhanced with an SEHBAC flat roof extension.

The strongest & warmest flat roof extension available

Adding the ultimate contemporary 'wow' factor time and time again, you can count on an SEH BAC flat roof extension for durability, longevity, and outstanding thermal insulation too. Depending on the amount of glazing it contains, a modern flat roof extension can considerably reduce your energy bills. Able to achieve outstanding U-values as low as 0.14W/m2K, the roof lantern incorporates thermally broken aluminium sections; delivering the look of a classic orangery without ever having to compromise on present-day efficiency.

Prepared for the worst of the weather, its strength shines through the fact it can span up to 5.8m above slimline bi-fold or sliding doors without costly and unappealing additional support. It also has a pre-manufactured ‘fall’ system to ensure water drains away efficiently.

A range of 'fast-fit' flat roof options for your new extension

Contemporary ‘edge-to-edge’ flat skylights are a firm favourite with modern styled developments, as well as those that seek greater privacy without having to compromise on natural lighting. Whilst our beautifully pitched lantern roof extensions create an unforgettable statement in heritage, period, and more traditionally styled households in Essex and the Southeast.

With limitless designs and finishing touches available, we can work with your personal requirements to build a flawless flat roof extension solution that exceeds all expectations.

Available in a number of square or rectangular sizes to suit you

Ideal for a new kitchen extension, as well as modernising existing extension spaces, our flat roof extension design process will guide you through each step and make you fully aware of the range of high-quality design choices available.

Personalized in a multitude of alluring colour choices and finishes, for a really contemporary appearance, go one step further with an extended internal plastered soffit system*, a modern overhang on the roof to shelter the doors, and level external flooring options to seamlessly flow from the inside to the outside with the utmost ease and finesse. Perfect for those with 'Grand Designs' in mind, it can also accommodate extra-large roof lights up to 23m².

*Available in small, medium, or large, a soffit is a horizontal architectural feature built lower than the area around it. Its purpose is to conceal light fittings and speakers, it adds stylish character to any extension.