Expensive fly screen failed on the cat - is that a defect?

You can glue holes, it doesn’t look very nice, but it holds. I cut pieces from other fly screens we had and glued them on. The replacement would have cost almost as much as a new door from our window maker. So for now, I’m living with this unsightly solution on our swing doors upstairs. For one swing door, you could possibly attach a sort of kick plate at the bottom edge, where the cat holds on. We had an insect protection roller blind on the lift-and-slide door downstairs for a long time. The neighbor’s cat destroyed it. He pushed through at the bottom. The specialist advised me against getting a new roller blind or pleated blind, as it would break just as quickly as one from the hardware store. So we are still looking for a solution. Flies and mosquitoes in the house are simply not an option for us either.

with us, terrace door without cat, covered with gauze fly screen, the door has held for years.
With acquaintances who have cats, the door builder installed stainless steel fly screen up to one meter high, just as fine-meshed as gauze.
The cats have no chance to get in there with their claws.
The door has swing hinges, the stainless steel part has dents and bumps, the cats go through the door by pushing it open.

That’s a good idea. I’ll ask the guy about it. Maybe he can offer something like that. :D

Friends of ours have a cat flap in the insect screen door.

Google it. There’s quite a bit about it.

Fly screens made of stainless steel as a search term also show many results. The mesh is only clipped in, that should be doable by yourself.

Be glad it was your cat. At our place, a stray cat regularly tries to break in. We have a pleated fly screen door. So far, the stray cat has only pushed it out of its track while "breaking in" and hasn't broken it yet. I urgently need to find the owner of the cat because as soon as the door is damaged, they will get the bill. The door cost €700.

... You can certainly hold a bill under the cat owner’s nose, but they don’t have to pay it, according to multiple rulings. Loosely based on 'You can’t supervise cats'.

My cats have gotten used to the bars and now leave them alone.