Opposing needs: soundproofing a door, constructing a cat door!

[Garald]

There is a door we would like to soundproof, or at least insulate phonically to the extent possible: it leads to a narrow open staircase leading to the attic, which is currently a somewhat creaky place, and will probably remain so to some small extent, in spite of our determined efforts.

 

The problem is that we also wish to install a cat door in the lower part of the doors. My architect says one cannot do both. Are there such a thing as a cat door that does not make sound insulation of the human door around it pointless?

[SteamyTea]

10 hours ago, Garald said:

Are there such a thing as a cat door that does not make sound insulation of the human door around it pointless

@ToughButterCup is the man about cat flaps.

 

The nearest you will get is a passivhaus one, there is a good link between insulation for thermal and sound.

 

http://www.marshflattsfarm.org.uk/wordpress/wp-content/uploads/2015/12/PetWalk.jpg

[Garald]

10 hours ago, SteamyTea said:

@ToughButterCup is the man about cat flaps.

 

The nearest you will get is a passivhaus one, there is a good link between insulation for thermal and sound.

 

http://www.marshflattsfarm.org.uk/wordpress/wp-content/uploads/2015/12/PetWalk.jpg

 

That looks like a heavy thing to be put on an outside door.

[Garald]

15 hours ago, SteamyTea said:

@ToughButterCup is the man about cat flaps.

 

The nearest you will get is a passivhaus one, there is a good link between insulation for thermal and sound.

 

http://www.marshflattsfarm.org.uk/wordpress/wp-content/uploads/2015/12/PetWalk.jpg

 

Would the following help? 

https://www.thepetflap.com/passivhaus-pet-door/

Can it be complemented with other measures? (A tunnel with drapes, say?)