Lacuna UK and Ireland | Heat treated timber with many advantages
Lacuna bi-fold doors: The materials have been tested at the German testing centre IFT- Rosenheim and subsequently the doors have been certified by the approved testing centre at Danish Technological Institute. They have total u-values typically down to 0.9 W/m², air permeability has been tested to EN 12207 - Class 4 at +/-600 Pa, water tightness to EN 12208 Class E1200 and security to EN1627-30 / PAS24.
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Shortlisted for Build It Awards 2018

Lacuna supply a durable, dimensionally stable door with unrivalled u-values and airtightness Our Danish designed bifolds are used from Nigeria to Norway and we are now proud to be on the Build It Awards 2018 shortlist for Best Glazed Doors....

Heat treated wood and water…

A good folding door that can last for 50 years is very dependent on dimensional stability. Lacuna regularly carries out salt water tests to make sure that our door frames in TMT composite (heat treated beech) live up to the Lacuna quality. The Lacuna door frame on...

Heat treated timber…and why it is such a good idea…

Heat treatment is not a new invention – whenever a Viking ship has been found at the bottom of Roskilde Fjord in Denmark, it has nearly always only been the keel that has been intact. To bend the bow and stern keel, the Vikings heat-treated...