Hello everyone,
I would like to get some opinions/facts on the following topic:
To achieve sound insulation or to prevent drafts inside a building (single-family house), it is possible to install a threshold at every door inside the house. This means that the finished floor level of the room the door opens into is about 2.5 cm (1 inch) lower. The door then rests on the threshold at the bottom, creating an (almost) airtight seal. For example: the hallway has a floor buildup of 17 cm (7 inches), while all accessible rooms into which a door opens have only a 14.5 cm (5.7 inches) floor buildup.
The question is: Is this a standard and recommended practice in new constructions nowadays, or was this mostly done in the past (1980s)? – I have seen it in a house from that period...
I am looking forward to your answers and opinions – thank you very much!
I would like to get some opinions/facts on the following topic:
To achieve sound insulation or to prevent drafts inside a building (single-family house), it is possible to install a threshold at every door inside the house. This means that the finished floor level of the room the door opens into is about 2.5 cm (1 inch) lower. The door then rests on the threshold at the bottom, creating an (almost) airtight seal. For example: the hallway has a floor buildup of 17 cm (7 inches), while all accessible rooms into which a door opens have only a 14.5 cm (5.7 inches) floor buildup.
The question is: Is this a standard and recommended practice in new constructions nowadays, or was this mostly done in the past (1980s)? – I have seen it in a house from that period...
I am looking forward to your answers and opinions – thank you very much!
P
Peanuts7419 Jan 2016 12:10Maybe a silly question, no idea, but especially nowadays with controlled residential ventilation systems, wouldn’t air whistle through the remaining openings and gaps around the otherwise as airtight as possible doors when it has to "squeeze through" there?
For example, in the bathroom there would be a negative pressure due to extraction, and in the bedrooms a positive pressure?
For example, in the bathroom there would be a negative pressure due to extraction, and in the bedrooms a positive pressure?
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nightdancer19 Jan 2016 12:27Peanuts74 schrieb:
This might be a silly question, I’m not sure, but especially nowadays with controlled mechanical ventilation systems, wouldn’t air whistle through the remaining openings and gaps if the doors are as airtight as possible, since the air has to “squeeze” through there?
For example, in the bathroom, there would be negative pressure due to exhaust, and in the bedrooms, positive pressure?That’s why such rooms have both supply and exhaust air, while other rooms have vents or slots in the doors.
Peanuts74 schrieb:
Maybe a silly question, no idea, but especially with mechanical ventilation with heat recovery, wouldn’t air whistle through the remaining openings and gaps around the ideally airtight doors when the air is forced through them?
For example, in the bathroom there would be negative pressure due to extraction, and in the bedrooms positive pressure?The question is not silly at all.
Doors should or can have a small gap when used with mechanical ventilation with heat recovery. It works very well that way.
However, whistling would not occur even with airtight doors, because the airflows in mechanical ventilation with heat recovery systems are very smooth and moderate. At least with a typical air exchange rate of 0.4/h.
Best regards
Thorsten
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Peanuts7419 Jan 2016 14:23Wastl schrieb:
We had to cut the bottoms of our doors so that the necessary air circulation (central ventilation system) could actually take place.Exactly, we also have about a 1cm (0.4 inch) gap, and even there you can feel a slight draft when you hold your hand in front of it. I have never seen supply and exhaust air in EVERY room 😕
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nightdancer19 Jan 2016 14:36Peanuts74 schrieb:
Exactly, we also have about a 1cm (0.4 inch) gap, and even there you can feel a slight draft when you hold your hand near it.
I’ve never seen supply and exhaust ventilation in EVERY room 😕I wasn’t referring to every room, only the sound-insulated ones; otherwise, the soundproofing would be pointless.
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