A modern flat roof extension in Bromley and Dartford to Maidstone and Sevenoaks

Do you envisage a contemporary extension space that allows your indoor and outdoor space to smoothly connect? Complying with present-day Building Regulations, our modern flat roof extensions are weather-resistant and thermally sound, as well as eye-catching. Boosting classic and modern styled properties alike, each Fineline flat roof extension is built and project managed by our knowledgeable team of experts to create your ultimate ‘forever home’.

What is a flat roof extension?

Depending on your specific improvement project, you can choose from several square or rectangular sizes to suit your individual project. Designed to deliver striking uninterrupted sightlines that bathe the space in warm natural light, our Flat Skylight is at the cutting-edge of chic architectural design. Sitting flush (flat) to the internal plasterboard, our fixed skylights unite a fantastic frameless appearance from the interior and a fashionable, streamlined look on the outside. Traditionally styled homes in Kent can benefit too, with an elegant pitched lantern roof option tailored to your needs. Offering the widest range of bespoke design options, achieve the look you’ve always dreamt of with a FineLine Windows flat roof extension.

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    The most robust & thermally-sound flat roof extension around

    Incredibly durable, long-lasting and energy efficient, our flat roof extensions never fail to add contemporary character. Able to notably reduce energy bills, depending on the amount of glazing used, you can look forward to exceptional U-values as low as 0.14W/m2K. Thanks to its advanced thermally broken aluminium sections, a FineLine modern flat roof extension allows you to achieve traditional orangery aesthetics that can be used all year round, regardless of the season or the weather.

    Another unique feature means it can span up to 5.8m above slimline bi-fold doors or sliding doors without costly and unattractive extra support. It also has a pre-manufactured ‘fall’ system to ensure water drains away efficiently.

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    Lantern roofs
    A black flat skylight.

    'Fast-fit' flat roof designs to complement any home in Kent

    A popular enhancement for homeowners that need more natural light and privacy, sophisticated, made-to-measure ‘edge-to-edge' flat skylights are a must within modern buildings across Kent and the Home Counties. Or if you’re lucky enough to live in a heritage, period, or more traditionally styled property, a gorgeous pitched lantern roof extension is sure to add unmatched grandeur.

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

    Buying a product through FineLine offers you real peace of mind

    Customer promise

    We have the knowledge and experience to provide you with exactly what you need. Our staff are expertly trained to guide and advise you. We offer you a 10 Year Guarantee.

    Read our customer promise

    We are one of the largest Fensa Aproved regional retail companies.

    TrustMark AprovedVetted for professionalism, competency & compliancy

    Our Accreditations

    BSI 9001 2015
    Fensa Approved Installer
    Ultraframe conservatory installer