Healthy living doesn't start with the furniture – it starts in the walls. That's why we build only with materials that breathe, smell of wood and last for decades.
Our standard
For us, healthy living isn't an optional extra – it's the foundation. We chose every layer of the house so that you breathe air as clean as outside in the forest.
Included as standard
In typical timber houses, natural materials are a paid upgrade. With us, they come in every house from the start – included in the base price.
Compared with the typical cheaper timber houses on the market.
| ROSIMI standard | Typical budget option | |
|---|---|---|
| Insulation | Pavatex wood fibre, 160–200 mm | spray foam insulation or polystyrene |
| Interior walls and ceilings | solid spruce boards, oiled | painted plasterboard, OSB board |
| Flooring | solid Bjelin wood flooring | laminate or vinyl |
| Façade | Siberian larch | rendered facade board, plastic cladding |
| Surface finishes | natural Remmers oils and waxes | synthetic varnishes and paints |
| Windows | aluminium frames, toughened insulating glass | uPVC windows |
| Bathroom | heated floor, Grohe, Bocco, Laufen | often only at extra cost |
Wall build-up
Click a layer to see what it does. The wall is built up so that it breathes and moisture always has a way out.
A rigid wood-fibre board over the load-bearing frame. It insulates the wall without thermal bridges and adds extra protection against wind.
30 mm · Loft 50, Loft 72 and Loft 92Materials up close
A load-bearing frame of kiln-dried structural solid timber. The wood is dried and planed, so it doesn't warp or crack and needs no chemical impregnation.
Insulation made from wood fibres. Unlike polystyrene, it breathes, absorbs and releases moisture, and in summer it slows down the heat entering the house.
A facade made from wood that grows slowly in a harsh climate. It is dense, rich in resin and naturally resistant to moisture and pests. Over time it weathers to a beautiful silvery patina.
Walls and ceilings of natural spruce boards. We treat them with Remmers oil and hardwax, so the wood stays natural to the touch and to the nose.
We stick with wood in the bathroom too. The spruce boards are protected with Remmers wax glaze, and we add tiles around the shower and washbasin. The floor is heated.
Large windows are the soul of our houses. We use aluminium frames and toughened insulating glass that lets the light in but keeps the cold out.
Why not polystyrene
Polystyrene is cheap and insulates well in winter. But in a timber house that needs to breathe – and shouldn't turn into a sauna in summer – it falls short. That's why we don't use it.
| Pavatex wood fibre | Polystyrene (EPS) | |
|---|---|---|
| Origin | wood – a renewable resource | crude oil |
| Water vapour permeability | vapour-permeable, the wall breathes | vapour-tight, moisture stays in |
| Summer overheating | high thermal mass, releases heat slowly | low thermal mass, the house heats up quickly |
| Sound insulation | good noise reduction | weaker |
| At end of life | natural material | waste that is hard to recycle |
And in the sauna?
Inside our saunas we use aspen. Even in the heat it doesn't burn to the touch or release resin, so the benches are comfortable to sit on. On the outside, our saunas are protected by the same Siberian larch as our houses.
Our saunas →
Tell us what you have in mind. We'll get back to you and talk your project through together, without any rush.
