ᐅ Insulating exposed ceiling joists and covering them with drywall (gypsum board)
Created on: 21 Mar 2014 16:03
P
Philiboy83P
Philiboy8321 Mar 2014 16:03Hello,
In our newly built house (2013), looking from the ground floor, we want to insulate part of the exposed ceiling beam layers and cover them with drywall, as we want to keep the open beam look only in the living room and hallway.
Above the beams/board layer, on the upper floor, there is a 4 cm (1.5 inches) thick mineral wool impact sound insulation, 8 cm (3 inches) rigid foam/expanded polystyrene insulation, 0.2 mm vapor barrier foil on the insulation / PE edge insulation strips at the walls, underfloor heating with hot water, and a 6.5 cm (2.5 inches) screed, plus floor finishes of tiles and laminate.
Now the question: the beams are 24 cm (9.5 inches) high. Should they be fully insulated (glass or mineral wool) or only partially, for example 20 cm (8 inches), to work according to the mass-spring principle? We also hope to gain some additional sound insulation since the rooms above are children’s bedrooms, and noise carries through well during play, which is probably also due to the cheap laminate, which is quite loud and transmits sound well despite a 3 mm (0.1 inch) universal impact sound insulation.
We want to shut that off and then cover it with drywall.
What about a vapor retarder foil? Does one need to be installed, and if so, should it go above or below the insulation? This will be done in the utility room, guest room, and guest bathroom. In the hallway and living room, the open beam ceiling should remain as it is.
Best regards
In our newly built house (2013), looking from the ground floor, we want to insulate part of the exposed ceiling beam layers and cover them with drywall, as we want to keep the open beam look only in the living room and hallway.
Above the beams/board layer, on the upper floor, there is a 4 cm (1.5 inches) thick mineral wool impact sound insulation, 8 cm (3 inches) rigid foam/expanded polystyrene insulation, 0.2 mm vapor barrier foil on the insulation / PE edge insulation strips at the walls, underfloor heating with hot water, and a 6.5 cm (2.5 inches) screed, plus floor finishes of tiles and laminate.
Now the question: the beams are 24 cm (9.5 inches) high. Should they be fully insulated (glass or mineral wool) or only partially, for example 20 cm (8 inches), to work according to the mass-spring principle? We also hope to gain some additional sound insulation since the rooms above are children’s bedrooms, and noise carries through well during play, which is probably also due to the cheap laminate, which is quite loud and transmits sound well despite a 3 mm (0.1 inch) universal impact sound insulation.
We want to shut that off and then cover it with drywall.
What about a vapor retarder foil? Does one need to be installed, and if so, should it go above or below the insulation? This will be done in the utility room, guest room, and guest bathroom. In the hallway and living room, the open beam ceiling should remain as it is.
Best regards
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