Prefabricated wooden house floor and ceiling constructions

Floor elements are constructed from 45×195, 45×220, 45×245 or other certified wood according to static calculations or local requirements. On the inside side 22 mm OSB board is used that gives extra strength. Sound isolation is ensured by using not lower than 150 mm mineral wool insulation that is doubled near external walls to create the best possible insulation and not to allow cold air to enter the house. Ceiling construction can have visible or closed beams.

There is a special acoustic construction ceiling type used if there is a ceiling construction dividing two separate apartments. Special acoustic profiles are used for inside decoration and special sound-reducing boards on the upper side.

If the house uses floor elements on lines or poles foundations - then the outside sheating is chosen according to the location. It is possible to use special bitumen impregnated board or OSB board.

Floor construction size, mm	Insulation, mm	U-value, W/m2K
195	200	0,180
245	250	0,150

Standard ceiling construction

(according to SINTEF Byggforsk Trehus)

Standard floor construction

(according to SINTEF Byggforsk Trehus)

OSB board, as main layer for the flooring
Wooden beams C24 45x195,220,245 mm
Sound isolation 150, 200, 250mm
Wooden frame for decoration and communications
Inside decoration (gypsum board, Fermacell, wooden panels or others), installed on the building site

OSB board, as main layer for the flooring
Vapour isolation 0,2 mm
Mineral wool 200, 225, 250 mm
Wooden beams C24 45x195,220,245 mm
Wind barrier, OSB or impregnated bitumen board

This is one of our standard constructions mainly suitable for Northern Europe. Our company also produces different constructions that comply with other regional and country-specific local standards and your needs, contact us.

Brettstapel ceiling and floor constructions

Ekobustas also produces brettstapel, massive wood construction ceilings and floors. They are very strong, have very good acoustic characteristics and also are very valued due to ecological, microclimate adjusting characteristics. In the summer these stacked board constructions absorb the humidity and in the winter they release it, consequently making the indoor climate pleasant and confortable. More information about brettstapel constructions you can find here.


Parquet, massive wood flooring, laminate flooring, tiles etc. Screed or wood-frame Sound isolation Trickle protection sheet Brettstapel construction

Our finished projects