ᐅ Cat flap in KfW55 house with ventilation – any experiences?
Created on: 23 Mar 2021 09:33
K
KUM_im_Tal
We have a KfW-55 end-terrace house with insulation, triple glazing, and a ventilation system. Now we want to install a cat flap in a glass panel next to the patio door. Has anyone done this before?
- How does this affect the performance of the ventilation system? It won’t be completely airtight anymore.
- How much heat loss can we expect – it’s just a simple plastic flap, after all.
- Is installation even possible with triple glazing that also has RC2 security features?
We would have a professional company do the installation, but we’re not sure if it’s all feasible. I would appreciate hearing about others’ experiences.
- How does this affect the performance of the ventilation system? It won’t be completely airtight anymore.
- How much heat loss can we expect – it’s just a simple plastic flap, after all.
- Is installation even possible with triple glazing that also has RC2 security features?
We would have a professional company do the installation, but we’re not sure if it’s all feasible. I would appreciate hearing about others’ experiences.
Badener1970 schrieb:
He really likes using the pet door now...Hello, I’m currently working on the same topic: a KFW 55 house and the same cat flap as yours is planned for the window.
When our house is finished, a "leakage test" (airtightness test) will have to be carried out. Was that the case for your house as well? Or was your house already completed and you installed the cat flap afterward?
Thanks in advance for your reply.
Tostbert
M
Matthias4510 Jan 2022 10:48Tostbert schrieb:
Hello,
I’m currently working on the same topic of a KfW 55 house and want to install the same pet door in the window as you did.
When our house is finished, a “leakage test” will have to be carried out. Was that the case for you as well? Or was your house already completed and you installed it afterward?
Thanks in advance for your reply
Tostbert The leakage test for a KfW 55 house without ventilation is basically a joke! The limit value is three air volume changes per hour.
Matthias45 schrieb:
The airtightness test for a KfW 55 house without ventilation is basically a joke! The limit is 3 air changes of the volume per hour. We also have a ventilation system included. Do you know how the value behaves in that case?
Best regards
Tolentino schrieb:
As far as I know, 1.5, passive houses 0.6.
But it’s best to check with the KfW. Thank you very much for your quick replies ✌️✌️
B
Badener197010 Jan 2022 21:21Tostbert schrieb:
Hello,
I’m currently dealing with the same topic of a KfW 55 house, and the same pet door as you want to install in the window.
When our house is finished, a "tightness test" (airtightness test / blower door test) must be conducted. Was this the case for you as well? Or was your house already completed and you installed it afterward?
Thanks in advance for your reply
Tostbert During the measurement, I had sealed off the pet door.
Similar topics