Lacuna Passivhaus Standard Patio Doors

We give you the opportunity to get a beautiful patio door that matches your folding doors. Our patio doors are made to the same principle as our folding doors, to ensure top quality.

CHOICE OF MATERIALS

It is possible to choose from a number of wood species for your patio door: oak, beech and mahogany. At Lacuna, we use environmentally friendly processes in our treatment of the wood, which make it as maintenance free as wood / alu. Please read about our TMT Composite® treatment below.

TMT COMPOSITE®

TMT Composite® (Thermal Modified Timber) is the concept of Lacuna’s advanced heat-treatment, which we use on beech for the patio doors. No chemicals whatsoever, only heat, is used in the treatment. Through the TMT® process the timber obtain durability class 1, as teak, and a humidity of about 5.5%, making the modified timber very suitable for folding doors, as dimensional stability is extremely important for an airtight product that should not need adjustment during changing weather conditions (moisture / drought).

The TMT Composite® also provides much better insulation, as the wood cannot absorb moisture like untreated wood. The result is a patio door that lasts for many, many years.

SURFACE TREATMENT OPTIONS

It is possible to chose among a number of surface treatments – either painted or oiled.

More than 90% of what we manufacture is painted TMT beech. We can paint in all colors, and also in transparent paint with UV filter on e.g. TMT Composite®.

We at Lacuna paint our patio doors like in the automotive industry, priming our products twice with sanding inbetween and applying two or three layers of top coat, depending on colour. The result is a super smooth surface (many believe it is painted aluminium) that is much more durable than through the traditional technique used in the window industry.

SUPERIOR AIRTIGHTNESS AND INSULATION

The Lacuna folding doors are certified, tight and well insulating. Our passive house standard, patented system is designed with emphasis on great insulation properties and tightness through double seals in the outer frame and triple seals between the door leaves. Lacuna doors are built to work from -60 degrees and up to +50 degrees celcius. Therefore, customers far above the polar circle as well as on the Equator are happy with our products. Good insulation and tightness work both ways!