We need to install a cat flap and we don't want it in the front door, which leaves two options: a tunnel through the wall, or a hole in the patio door (which is double glazed glass). Which option should we go for? In both cases we'll need to pay someone (builder or glazier) and I'm not sure which one will be more expensive. I'm leaning towards the patio door option because I think it will be easier for the cats to get in and out (as opposed to climbing through a tunnel in the wall). Am I right?
FWIW we're getting a SureFlap, not that the type should make a difference - either way we need to make a hole somewhere!