Technical description

  1. Ready-clad facade
    In order to reduce handling on the building site, the wall elements can be delivered factory-fitted with windows and wall cladding.

  2. 45 mm edge-glued board
    Glue joints across the board allow moisture to be transported through the wood, so the structure can breathe.

  3. Spaced-out studding
    Gives the boards added rigidity.

  4. Cross-mounted edge-glued board
    The cavity is filled with wood-fibre insulation in the factory. Wall thickness depends on the project in question, and the elements can be used for anything from cabins to an energy-plus house.

  5. 45 mm edge-glued board
    Glue joints across the board allow moisture to be transported through the wood, so the structure can breathe.

  6. Potential installation space
    The wall elements can also be used as a finished surface.

  7. Floor structure
    Conventional HDF or solid floor structures made of concrete are cast in place against pre-fitted pins in the wall. Insulation is laid outside these.

  8. Foundations and joist
    Up to four storeys can be erected on one cast slab without piling, depending on the ground conditions. Each new layer of wall elements is positioned on a glulam joist.

The wall is ordered on the basis of drawings as flat elements or standard sections 3000 mm wide and either 2700 mm or 3000 mm high.

In constructional terms, the element consists of glulam, resulting in a very rigid and robust framework, with a wood content several times greater than walls with conventional stud framing.

  1. The elements are easy to transport and efficient to manufacture in large groups. Compared to equivalent concrete elements, they generate fewer bottlenecks and the dependence on just-in-time deliveries is reduced.

  2. Up to four storeys can be erected on one cast slab without piling, depending on the ground conditions.

  3. Conventional HDF or solid floor structures made of concrete provide excellent attenuation of footstep noise. The floor structure elements are cast in place against pre-fitted pins in the wall.

  4. In order to reduce handling on the building site, the wall elements can be delivered factory-fitted with windows and wall cladding.

  5. The elements are lifted in groups to the level where they are to be installed. Lifts are shorter and safer than for heavier concrete elements.

  6. The elements are glued and screwed together in situ and the structure is provided with expansion joints.

  7. Internal walls can also be lifted into position as pre-fabricated elements.

  8. Normally the loft area does not come with integrated insulation, but the roof structure can also be made up of pre-insulated roof cassettes.

Roasjö solid wood walls

  • Load-bearing walls, ready-insulated with excellent insulating capability.
  • A construction system that is easy and quick to use. The same method as on prefabricated buildings involving concrete.
  • Good for combining with concrete floor structures when constructing multi-storey houses in order to meet acoustic and fire requirements.
  • Climate-smart construction in wood. 98% renewable material (wood and wood-fibre insulation).
  • Wood retains carbon dioxide, helping reduce global warming.
  • Fully diffusion-open material results in excellent indoor climate; walls and roof can “breathe”.
  • No plastic products, resulting in a healthy house for living in without static electricity.
  • Thermal-heavy building reduces energy consumption – a high proportion of wood results in thermal-heavy walls and roof, helping reduce energy consumption.
  • The house can be left without heating as needed (e.g. in a holiday home), as the walls and roof are diffusion-open.
  • Safe building method – from the start of the 20th century to the end of the 1950s, houses were built with timber planks insulated with wood fibre (wood shavings and sawdust). These houses are still standing and good to live in today.