Welcome to a world of Lacuna folding doors

Over 20 years of experience designing and manufacturing custom-made folding doors tailored to your needs.

What is Lacuna?

Lacuna is a Danish company that develops and manufactures folding doors at its own factory in Langeskov. The ambition is to create the world’s best folding door – as an alternative to traditional sliding doors – opening up your entire home and bringing nature inside during the summer, without compromising on insulation, airtightness, security, design, or quality.

What is a Lacuna folding door?

A folding door from Lacuna is designed to last more than 50 years and can open up to 90% of the width – whereas a traditional sliding door only opens up around 45% of your home to the outdoors.

Inspiration

Lacuna’s folding doors are manufactured at our own factory in Langeskov and tailored to each home and specific project. Contact us for expert advice and a non-binding quote.

For holiday homes

With a folding door from Lacuna, your holiday home gains extra square meters by seamlessly connecting indoor and outdoor spaces.

Folding doors for the home

Install a folding door in your home and create a way larger living space by connecting indoors and outdoors seamlessly. 

Folding doors for apartments

In apartments, you can create an exceptional quality of life by maximizing the opening to the balcony. Let nature in.

For cafés and restaurants

Cafés and restaurants use Lacuna’s folding doors because they are burglary-resistant, durable, sound-insulating, and more.

Design your folding door to match your needs

No homes are alike, which is why we offer tailor-made solutions adapted to each individual customer and project. If you need advice and guidance, we’re here to help. You’re always welcome to contact us for a no-obligation conversation and quote.

"We don’t "just" produce folding doors. We create quality of life for the home."

Henrik Brunsø, CEO

The dream of opening up your home and bringing nature inside is the foundation for Lacuna today producing folding doors in Langeskov on the island of Funen. Their lifespan of 30–50 years is the result of continuous product development, carefully selected materials, and the ambition to be the world’s best folding door manufacturer.

Danish design and production

At our production facility on Fyn, Denmark, Danish design is combined with German quality. Our folding doors are certified as the world’s most airtight and best insulated. They are developed to withstand everything from extreme temperatures to hurricane-force winds of up to 280 km/h. With a lifespan of over 50 years and documented resistance to both weather and break-ins, they meet the highest standards.

Why choose Lacuna?

Tests & Certifications

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.

Sustainability at the forefront

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%.

Easy installation, cost-effective fitting

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.

When quality needs to be felt

Read why customers choose Lacuna for their homes and building projects.

HAVE A LOOK AT OUR SHOWROOM

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.