The carpet is about 5-10mm too short and over time has started to pull out of the threshold strip. What's the neatest/simplest way to deal with this?
I've tried pulling the carpet hard to stretch it which doesn't really work. Perhaps the edges of the carpet are already too frayed.
My first thought is a wider threshold. Probably need something that covers back at least 20-25mm into the carpet side (currently only 12mm).
Slightly tricky because the existing threshold one is flush with the tiles and the door is exactly the right height. Perhaps take the door off and trim it down is the answer?
I wondered about bodging it with something like this:
I realise that's carpet to carpet, but if I cut off the extending base part of the gripper on the tile side, it might work?

