There’s something magical about a summer house. The nature. The light. The fresh air. The relaxed atmosphere invites you to put your feet up, switch off your phone, and lose yourself in a good book. With a folding door from Lacuna, your summer house gains extra living space by seamlessly connecting indoors and outdoors. Let the magic in.

Lacuna doesn’t settle for standard testing. Our folding doors are tested at the Danish Technological Institute, in our own extreme tests, and by independent third parties abroad for moisture absorption, dimensional stability, and insulation. This ensures full documentation and helps make Lacuna folding doors the world’s most airtight.

At Lacuna, care for the environment is an integral part of everything we do. Our raw materials are carefully selected, and our folding doors are developed with a focus on high insulation, reduced heat consumption, and a lower CO₂ footprint. With a Uw value of 1.0–1.2, they can help reduce energy consumption by up to 30%.

Lacuna’s products combine energy efficiency, durability, and a refined finish with a revolutionary patented top-frame system. Here, the running track is integrated directly into the top frame, allowing for more precise installation, fewer materials, and an even better-looking result.
We know that visiting Denmark isn’t possible for everyone, so we’ve created a short video to give you a quick visual tour of our showroom and show Lacuna’s folding doors in action. It’s an easy way to experience the product and feel more confident in making the right decision.
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