Hello everyone,
I want to renovate an old wooden beam ceiling. The floorboards have already been removed, the joists will be doubled where necessary, and then OSB boards and dry screed will be installed as the new floor. Tiles will be laid on top of this.
I’m wondering how I can ensure sound insulation for the ground floor. Is mineral wool between the joists sufficient here (in addition to insulation strips on the beams and at the wall), or would a loose-fill insulation be recommended? I am limited in how much weight I can add. Is there an alternative with low weight but good insulating properties?
Thanks and best regards
I want to renovate an old wooden beam ceiling. The floorboards have already been removed, the joists will be doubled where necessary, and then OSB boards and dry screed will be installed as the new floor. Tiles will be laid on top of this.
I’m wondering how I can ensure sound insulation for the ground floor. Is mineral wool between the joists sufficient here (in addition to insulation strips on the beams and at the wall), or would a loose-fill insulation be recommended? I am limited in how much weight I can add. Is there an alternative with low weight but good insulating properties?
Thanks and best regards
H
hanghaus200017 Aug 2021 15:30Here is a construction method using heavy building panels and multiple layers of insulation
From top to bottom:
floating dry screed panel (25 kg/m2 or 5.1 lbs/ft2) with wood fiber insulation board
gypsum fiberboard (32 mm or 1.3 inches / 48 kg/m2 or 9.9 lbs/ft2)
fully insulated beam cavity
decoupled, freely suspended and cavity-insulated ceiling with Silentboard panel (17.5 kg/m2 or 3.6 lbs/ft2)
Actually, for your construction, a decoupled, freely suspended and cavity-insulated ceiling with Silentboard panel (17.5 kg/m2 or 3.6 lbs/ft2) should be sufficient. Would you have enough ceiling height for that?
From top to bottom:
floating dry screed panel (25 kg/m2 or 5.1 lbs/ft2) with wood fiber insulation board
gypsum fiberboard (32 mm or 1.3 inches / 48 kg/m2 or 9.9 lbs/ft2)
fully insulated beam cavity
decoupled, freely suspended and cavity-insulated ceiling with Silentboard panel (17.5 kg/m2 or 3.6 lbs/ft2)
Actually, for your construction, a decoupled, freely suspended and cavity-insulated ceiling with Silentboard panel (17.5 kg/m2 or 3.6 lbs/ft2) should be sufficient. Would you have enough ceiling height for that?
S
Sir_Batman17 Aug 2021 15:41hanghaus2000 schrieb:
Here is a construction method using heavy building panels and several layers of insulation.
From top to bottom:
floating dry screed panel (25 kg/m2 (5 lbs/ft2)) with wood fiber insulation board
gypsum fiberboard (32 mm (1.25 inches) / 48 kg/m2 (10 lbs/ft2))
full insulation in the joist cavity
decoupled and cavity-insulated ceiling with silent board (17.5 kg/m2 (3.6 lbs/ft2)) Thanks, is the full insulation in the joist cavity loose fill? That could become a problem because of the weight. Unfortunately, the decoupled ceiling cannot be implemented; I have already considered that.
Winniefred17 Aug 2021 18:43Decoupled suspended ceilings are reportedly very effective for soundproofing. As mentioned, there is a lot of information online with concrete examples of which measures achieve which effects. In the end, we only installed a dry screed, which honestly made almost no difference. In any case, I would recommend combining several measures suitable for the specific conditions.