“With the help of our patented building technology we can build insulating and load-bearing walls where the main components are made of wood and air. There is no need for mineral wool insulation or a plastic vapor barrier,” says Mikael Östling, CEO of Iso Timber.

“The system is easy and tight. Insulation performance comes from trapped air in the wall. Because wood transports moisture, no plastic sheeting is required as a barrier. The entire wall is a diffusion panel and adapts to the environment’s humidity. The system can be used in the wall construction of sheds, garages, single-family and multi-family houses.”

Building air blocks

Cabinetmaker Mikael Östling wants to revolutionize the building industry with a patented sandwich construction (Photo: Magasin Torstas).

“Iso Timber is a building block system. Each block consists of multiple glued 45 × 95 mm planks with sawn-tracks. There is plenty of air room, which provides good insulation properties. At the same time, the material is lightweight and easy to manage,” says Östling.

“The building blocks are added on top of each other – in stages – a simple procedure offering a short construction period where the frame bears the weight. This frees up the possibility of placing windows and doors without the limitation of conventional stud placements. The blocks are fixed on the inside and outside with sheets of plywood; the outside is covered with a suitable front panel. The wall becomes strong and insulating where the combination of wood and air is the principle idea.”

Good climate performance

The independent Jegreliusinstitutet (Tomas Östberg, 2012) recently assessed Iso Timber’s sustainable construction products and building techniques.
The results, which took into account environmental impact throughout the product lifecycle, a general perspective of sustainability, as well as the constituent chemicals, were was that Iso Timber’s wall structures yielded high environmental performance, particularly in terms of climate impact. Important factors included the wall structure, a large content of renewable wood material, and that the sawdust arising from manufacturing gets reused as energy pellets.

“We can use fairly soft and cheap timber (Class 6 or Class 7) and this contributes to good insulation capabilities and reduced heat losses. The goal of course is a building with low heating costs in the winter and one with a pleasant indoor climate during hot summer days.”

Eco advantages = business benefits

“The interest in climate and environmental issues offers us business opportunities. And the trend is towards healthier houses with good indoor climates. This is why many individuals and companies are interested in our products. We realize that the construction industry doesn’t change overnight. But we are optimistic. Iso Timber plans to invest in new production facilities and machinery to automate construction,” concludes Östling.

In the autumn of 2014, Iso Timber was featured in the Swedish TV program Äntligen Hemma. The show’s host and carpenter Martin Timell gave the system high ratings during the construction of the Attefallhuset Magnolia pavilion (photo).

The house, which didn’t require any building permits, has a living area of 25 square meters. Designed by architect Paul Ross, the house was designed to be healthy to live in, sustainable and energy efficient. Interesting fact: the sawdust from making the Iso Timber blocks would suffice to heat the house for decades.

The article published in June 2015