We want to replacing our old aluminium door with a double door, made of solid timber. The wood is pine, but 48mm thick and rebated panels with raised mouldings. It is a 6 panel georgian double door.
How would this fair against a 45mm hardwood timber door? I know that hardwood is denser than softwood, but how do they fair on the energy efficiency scale? Could this pine door be used for an external door if painted or varnished with an external wood paint?
The other question is what type of locking mechanism could I use for a double door? What could be the best way to secure the doors? I know that for insurance purposes you are to use specific locking mechanisms, but most are for UPVC doors or regular single timber doors?