We are building a cabin with a "bedroom section." Two bedrooms on the ground floor and two bedrooms and a small hallway/game corner for the kids upstairs. The construction is a post and beam framework with beams and joists visible from the ground floor.
On top of the joists lie 20mm tongue-and-groove boards as the sub-ceiling. My consideration is what to do next to minimize the risk of troublesome impact noise. The original idea was to frame up with 45x70 to create space for installations. Fully insulate and then add a plank floor.
But I've thought a bit and suspect there might be a better impact noise insulation with an even more "slender" construction. One idea has been to fill half the height of the frame with sand and then some type of loose fill that can be raked out, but that seems a bit cumbersome.
What I'm considering now is a layer of chipboard flooring on an impact noise mat. In this layer, I can also fit in the necessary electrical conduits. Then, I'll add another homogeneous layer of chipboard with an underlying impact noise mat and finally a plank floor that is glued or screwed into the top chipboard. What do you think of this solution?
Do you have suggestions for other better/thinner/simpler solutions?
Construction:
Plank floor
22 mm chipboard (floating installation)
8 mm Isolina Impact Noise Felt
22 mm chipboard (with embedded electrical conduits) (floating installation)
8 mm Isolina Impact Noise Felt
20 mm sub-ceiling of tongue-and-groove boards
5'x5' joists c/c 550
