ᐅ Soundproof Door for Bedroom / Children's Room

Dear forum,

For my condominium, I had originally planned to install soundproof doors (class 1) for the children’s room and bedroom, since these rooms are located near the apartment entrance door off the hallway.

However, the developer pointed out that due to the soundproofing—especially the door bottom seal—the door is quite airtight, and therefore oxygen supply and air exchange would basically only be possible through the window.

What is the expert opinion on this? Is soundproofing class 1 really so airtight that it would negatively affect the indoor air quality, making a soundproof door not advisable for a (passively ventilated) bedroom? Or is this concern negligible, and can I soundproof my bedroom without hesitation?

How many decibels does a standard hollow-core door actually block? For soundproofing class 1, it’s 27 dB, correct?

Thanks and best regards!

It is inherent to soundproof doors that they reduce or even prevent air exchange. Class 1 is already quite heavy-duty! The feeling of the room changes significantly, so I would recommend testing this yourself. I personally don’t feel comfortable in small rooms with sealed air volume.

When it comes to sleeping, children are excellent at tuning out noise. I wouldn’t install a soundproof door in a child’s bedroom. Such a door might be useful for a bedroom, especially if someone works shifts, to help align different daily rhythms. For occasional use, sleetone doors also work well.

Dahejul schrieb:

For my condominium, I had actually planned to equip the children's room and bedroom with soundproof doors (Class 1),

Why? Is there a war going on in your hallway? A solid, high-quality door is enough. You don’t need a soundproof door for that.

What do you mean by solid? The standard would be a hollow-core particleboard.

Obviously, the door and the sealing are better than those of a standard door.
What kind of walls are these? Many sounds and vibrations are also transmitted through the floor and walls.
A soundproof door is part of a solution but not a standalone cure, especially since it is not really necessary here. Just a slightly more solid door than the cheapest hardware store door will do.
And you won’t have any ventilation issues either.

Sound insulation class 1 (SK1) and other perceptions of space??? That’s nonsense! I have installed sound insulation class 2 (SK2) and a class 4 (SK4) door! SK4 is very effective and provides real quietness (the door leaf alone weighs 125 kg (276 lbs), double rebated, etc.) and only makes sense with at least 24 cm (9.5 inches) thick sand-lime brick walls and appropriate windows. Even strong knocking on the door is hardly audible. SK2, by comparison, offers relatively little. However, we are still glad to have it in the bedrooms, cloakrooms, and some bathrooms, and I would choose to install it again. The key is to always have controlled residential ventilation with both supply and exhaust air in these rooms. Then everything works perfectly...