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Phone Olsen

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Phone 0844 826 7766

  • Timber doors and windows

    Welcome to Olsen Doors & Windows

  • Bespoke timber doors and windows

    Welcome to Olsen Doors & Windows

  • Aluminium clad timber sliding doors

    Welcome to Olsen Doors & Windows

  • Bifolding doors from a trusted suplier

    Welcome to Olsen Doors & Windows


Lacuna timber bifolds


Overall widths up to 6 meters

Heights possible up to 2.7 meters

Hinges & handles made from brushed stainless steel, ensuring a timeless design

Painted doors use FSC certified laminated, heat treated Beech from Germany

Flawless paint finish, often mistaken for aluminium

In normal conditions, repainting not required for 15-50 years

Overall U-values as low as 0.7W/m2K

Top hung system meaning no threshold that collects dirt & debris

Patented lintel - rail system

Extremely well priced door for such high quality

Olsen’s Lacuna bi-fold doors are crafted with heat treated beech, the same material which was used to build the hulls on Viking long boats. This proven heat treating process of the beech makes it incredibly durable and resilient to twisting, warping or swelling. To this day when long boats are discovered at the bottom of the ocean it is often just the hulls which remain, a testament this incredibly durable solution.



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These folding doors have been developed with the principle that a door should last a lifetime, built to last 50 years and beyond.

Extensively tested, these timber bi-fold doors are proven to not absorb moisture as is the case with many timber doors. This ensures that the door remains the same shape, size and weight as the day it was built, making the operation of opening and closing the door effortless throughout its life.

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As well as the inherent high thermal performance of this bifold door solution, care has been taken to create a piece of furniture. The handles, hinges and running mechanism have been specifically designed for the Lacuna door, ensuring they are of matching design with identical profiles, lengths, diameters and finish.

Olsen doors and windows