ᐅ Insulating a Kitchen Exhaust (Chimney Effect) with Mineral Wool?

Created on: 1 Nov 2016 12:43

Hello, I would like to ask for a brief collection of ideas regarding the following issue:

We had a ducted exhaust hood installed, which vents the air through the roof. The kitchen is now installed, and it appears more and more that a chimney effect is occurring, meaning that cold outside air is entering the living space as if through an open window.

There are supposedly check valves, but the duct can only be accessed by removing the hood (which is difficult).

I had the idea of inserting insulation material (wool). This is technically possible. Is this feasible, or can anyone advise against it?

Any other ideas?

Steffi337 Nov 2016 10:19

Hello, we had exactly the same problem 15 years ago. We also installed a check valve in the pipe. This has effectively solved the problem to this day. Best regards, Steffi33.

markus27037 Nov 2016 10:37

Steffi33 schrieb:
Hello, we had exactly the same problem back then (15 years ago). We also installed a check valve in the pipe. This has effectively solved the problem up to now. Best regards, Steffi.

Thank you, we will do the same accordingly!

AOLNCM7 Nov 2016 11:27

You mention that you have a ventilation system. If the two fans are not running synchronously, it is possible that the air is following the path of least resistance.

Hacker18 Dec 2016 23:03

#10

Hello,

I would install the check valve as high up as possible. Otherwise, you will have a relatively long "cold" pipe inside your house.

Best regards,

Alex

markus270319 Dec 2016 07:09

#11

Update: A backflow flap has been installed. The problem is actually solved.

I installed the flap directly at the ceiling of the first floor, and the pipe is insulated above it.

ᐅ Insulating a Kitchen Exhaust (Chimney Effect) with Mineral Wool?

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