Hello. We are changing our drafty backdoor to a composite door and I want a cat flap in it. Joiner said he would put one in but advises against it because it will be shame for the new draft proof door to be compromised by a drafty cat flap. To be fair, my cat hardly every uses her cat flap, preferring to meow next to it or ring the keys until I open the door for her 🙄. Can anyone recommend a draft proof cat flap? Does one even exist? Thanks!