ᐅ Chimney Vent Grille vs. Sound Insulation

Created on: 25 Dec 2018 19:13
D
denz.
D
denz.
25 Dec 2018 19:13
Good evening,

We are planning to install a fireplace in our new build. It was clear to me that there would be a duct from the fireplace to the hallway behind it, to allow warm air to flow into the hallway and up to the upper floor. However, the fireplace installer pointed out that this could also cause sound to travel from the hallway into the living room.

Does anyone have experience with this?
I am now considering leaving out the ventilation grille to the hallway and, if needed, simply keeping the door open so that the warm air can enter the hallway.

Best regards,
Denz
Dr Hix26 Dec 2018 12:52
It’s not really clear what exactly you are planning.

Do you want to install a so-called “see-through fireplace,” meaning a fireplace with glass on both the living room side and the hallway side?
Or do you intend to break out a stone from the wall between the living room and the hallway and replace it with a ventilation grille?

Neither option is likely to be good for sound insulation; the grille even less so than glass.

As a general point: in a new build, I would think carefully about installing a fireplace that could actually heat the house. Unless you are an avid firewood collector and genuinely plan to rely mostly on the fireplace for heating (that is, switching off the main heating system), you will probably end up regretting the extra 10 kW fire sooner rather than later.
With a central ventilation system and an open-plan layout, this might be an option for the transitional seasons, but it doesn’t seem to apply in your case.
D
denz.
26 Dec 2018 16:36
Oh, okay. No tunnel.

The stove is to be installed with the back facing the wall between the living room and hallway. Above the firebox, there is a masonry cavity—I’m not sure of the technical term. From this cavity, warm air should both enter the living room (through a ventilation grille on the upper part of the stove) and also pass through a grille in the wall between the living room and hallway to reach the hallway, basically on the backside of the stove.

Of course, the intention is not to heat the entire house. Rather, it is to use the heating output from the cozy fire to benefit other rooms as well, while at the same time preventing the living room from overheating.
Dr Hix26 Dec 2018 16:55
As mentioned: The sound insulation of the wall would likely be significantly reduced here. Whether you want that is something you need to decide yourself.