ᐅ Insulation on Wooden Beam Ceiling in New Construction for Soundproofing
Created on: 29 Jan 2025 08:32
A
AngeliterA
Angeliter29 Jan 2025 08:32Hello,
We are currently building a single-family house with a timber frame construction and exposed ceiling beams made of KVH 10x26 cm (4x10 inches). Above these beams, there is a 27 mm (1 inch) plank sheathing, visible from below.
Now we are focusing on the floor structure on the upper floor. The plan includes a 4 cm (1.5 inches) thick stone wool insulation (likely Floorrock) and on top of that an 8 cm (3 inches) thick rigid foam/expanded polystyrene insulation, underfloor heating, and a 6.5 cm (2.5 inches) screed layer.
I have some doubts about the rigid foam/expanded polystyrene insulation regarding sound insulation, as it is a very lightweight material and mainly meant for height adjustment. Would a heavier additional layer of stone wool, wood fiber insulation, or extruded polystyrene (XPS) be better in this case?
Attached is a rough drawing of the ceiling beams and the floor construction.
Best regards
We are currently building a single-family house with a timber frame construction and exposed ceiling beams made of KVH 10x26 cm (4x10 inches). Above these beams, there is a 27 mm (1 inch) plank sheathing, visible from below.
Now we are focusing on the floor structure on the upper floor. The plan includes a 4 cm (1.5 inches) thick stone wool insulation (likely Floorrock) and on top of that an 8 cm (3 inches) thick rigid foam/expanded polystyrene insulation, underfloor heating, and a 6.5 cm (2.5 inches) screed layer.
I have some doubts about the rigid foam/expanded polystyrene insulation regarding sound insulation, as it is a very lightweight material and mainly meant for height adjustment. Would a heavier additional layer of stone wool, wood fiber insulation, or extruded polystyrene (XPS) be better in this case?
Attached is a rough drawing of the ceiling beams and the floor construction.
Best regards