I want to install an AirMove or similar to move cold air from the upper floor to the lower floor (so that warm air can more easily go up the stairs). This requires making a hole about 1 dm in size through the joists, and I would like some tips on this.
1) What does a joist look like!? Älvsbyhus 1995. My guess is (from underneath): Gypsum, studs, plywood, thin "foam rubber sheet", floor surface. Is there also insulation? It's certainly more sound insulating than a regular interior wall.
2) To get the hole from the sliding door wardrobe upstairs to the laundry room downstairs, the hole would need to be angled or with two 90-degree bends about 0.5-1 m apart. Is this much harder than just cutting straight down?
3) I'm worried that sound will pass through the hole. I'm thinking that the duct should be soundproofed, like this one: https://www.bygghemma.se/hus-och-by...cT3llD6OlyURGmNGbOztxscdMQYVRM0hoCKOMQAvD_BwE
What experiences do others have with sound leakage through similar holes?
1) What does a joist look like!? Älvsbyhus 1995. My guess is (from underneath): Gypsum, studs, plywood, thin "foam rubber sheet", floor surface. Is there also insulation? It's certainly more sound insulating than a regular interior wall.
2) To get the hole from the sliding door wardrobe upstairs to the laundry room downstairs, the hole would need to be angled or with two 90-degree bends about 0.5-1 m apart. Is this much harder than just cutting straight down?
3) I'm worried that sound will pass through the hole. I'm thinking that the duct should be soundproofed, like this one: https://www.bygghemma.se/hus-och-by...cT3llD6OlyURGmNGbOztxscdMQYVRM0hoCKOMQAvD_BwE
What experiences do others have with sound leakage through similar holes?
J jonle336 said:I want to install an AirMove etc. to move cold air from the upper floor to the lower floor (so that warm air can more easily go up the stairs). This requires making a hole about 1 dm large through the floor structure, and now I would like some tips on this.
1) What does a floor structure look like!? Älvsbyhus 1995. My guess is (from below): Gypsum, studs, plywood, thin "foam mat," floor surface. Is there insulation as well? It is significantly more soundproof than a normal interior wall.
2) To get the hole to go from the sliding door wardrobe upstairs to the laundry room downstairs, the hole would need to go at an angle or with 2 x 90-degree angles about 0.5-1 m apart. Is this much harder than just sawing straight down?
3) I am afraid that sound will pass through the hole. I imagine the duct should be soundproof, like this one: [link]
What experiences do others have with sound leakage through similar holes?
Are you thinking this bend should be in the floor structure?J jonle336 said:I want to install an AirMove etc. to move cold air from the upper floor to the lower floor (so that warm air can more easily go up the stairs). This requires making a hole about 1 dm large through the floor structure, and now I would like some tips on this.
1) What does a floor structure look like!? Älvsbyhus 1995. My guess is (from below): Gypsum, studs, plywood, thin "foam mat," floor surface. Is there insulation as well? It is significantly more soundproof than a normal interior wall.
2) To get the hole to go from the sliding door wardrobe upstairs to the laundry room downstairs, the hole would need to go at an angle or with 2 x 90-degree angles about 0.5-1 m apart. Is this much harder than just sawing straight down?
3) I am afraid that sound will pass through the hole. I imagine the duct should be soundproof, like this one: [link]
What experiences do others have with sound leakage through similar holes?
Now, I don't know specifically about your house, but normally the floor structure runs in the same direction as the roof trusses.
A normal floor structure is gypsum, strapping, insulation, chipboard, and then the flooring.
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