Tilbygning pris København NV

We would like to build some walls in order to divide one of the rooms in our appartment. Speci cally, we want to build a big wall and two more smaller ones (corner wall) as a hallway, so we can convert one huge room into too smaller ones. In the drawings, you can see the dimentions for each. The walls could be wooden or gypsum made. The new walls have now 440cm 10cm 95cm 10cm benn design with a width of 10cm, however this can be reduced if possible. Finally, we would ideally like some kind of sound insulation to be installed on the big wall.