Internal Door Cat Flap Options?
Here are some of the options to consider when installing dog and cat flaps internally.
Firstly do you need a flap this depends on the heating in your home? a more modern house which is fully insulated may have a fairly even temperature throughout all the rooms which means you probably do not close your doors during the winter months to reduce draft. In this situation, a hole to create a corridor may be more suitable than a flap. In older type properties having a door with a flap can help to reduce drafts and the internal slide-in panel or door lock can give you some added control.
Internal doors tend to be easier to cut than external doors and they can vary in thickness some doors can be panelled with a 4mm panel or they can vary up to 50 -60mm thick so this need to be checked before ordering.