ᐅ Soundproofing Interior Wall with Wood Fiber / Interior Doors
Created on: 19 Mar 2019 10:50
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Reini1234
Hello,
we are currently insulating our interior walls, which have 12cm (5 inch) wooden studs, with 80mm (3 inch) wood fiber mats SteicoFlex WLG40. This was included in our interior finishing package. Now we are considering whether to add an additional 40mm (1.5 inch) wood fiber board in the "critical" rooms such as the transition areas between the children’s room/bedroom/bathroom for sound insulation. Does this make sense, or would the additional benefit be minimal? Is it possible to quantify this in terms of a measurable unit like decibels? I couldn’t find any information about this in Steico’s technical datasheets.
On Friday, we had the selection appointment and discussed the interior doors. The consultant recommended solid core doors instead of hollow core for the mentioned rooms, also due to sound insulation reasons. However, we have installed a controlled mechanical ventilation system, which means the door panels would need to be trimmed to allow air exchange. This raises the question again if solid core doors still make sense in this case.
we are currently insulating our interior walls, which have 12cm (5 inch) wooden studs, with 80mm (3 inch) wood fiber mats SteicoFlex WLG40. This was included in our interior finishing package. Now we are considering whether to add an additional 40mm (1.5 inch) wood fiber board in the "critical" rooms such as the transition areas between the children’s room/bedroom/bathroom for sound insulation. Does this make sense, or would the additional benefit be minimal? Is it possible to quantify this in terms of a measurable unit like decibels? I couldn’t find any information about this in Steico’s technical datasheets.
On Friday, we had the selection appointment and discussed the interior doors. The consultant recommended solid core doors instead of hollow core for the mentioned rooms, also due to sound insulation reasons. However, we have installed a controlled mechanical ventilation system, which means the door panels would need to be trimmed to allow air exchange. This raises the question again if solid core doors still make sense in this case.
Reini1234 schrieb:
Is it possible to measure this in a unit like dB? I couldn’t find anything in the technical datasheets from Steico. Density. The higher, the better. 50 kg/m³ (3.1 lb/ft³) is acceptable for wood fiber insulation, but rather low for mineral wool.
Reini1234 schrieb:
Does that make sense, or is there hardly any benefit? What does the wall construction look like? Single stud, double stud, single, double, or triple-layer sheathing? Tongue and groove battens? How are the adjacent components designed and connected to the partition walls?
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Reini123419 Mar 2019 22:02Wall construction of the interior wall:
12.5mm (0.5 inch) Fermacell
120mm (4.7 inch) single stud frame
80mm (3.1 inch) SteicoFlex wood fiber insulation board WLG040
12.5mm (0.5 inch) Fermacell
I have now received feedback from the manufacturer Steico, who advised that the stud cavity should not be fully insulated. If the insulation board contacts both Fermacell panels, structure-borne sound will be transmitted from wall to wall. I was recommended to consider double-layer Fermacell boarding.
12.5mm (0.5 inch) Fermacell
120mm (4.7 inch) single stud frame
80mm (3.1 inch) SteicoFlex wood fiber insulation board WLG040
12.5mm (0.5 inch) Fermacell
I have now received feedback from the manufacturer Steico, who advised that the stud cavity should not be fully insulated. If the insulation board contacts both Fermacell panels, structure-borne sound will be transmitted from wall to wall. I was recommended to consider double-layer Fermacell boarding.
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