We would advise it is completely dependant on the space and your requirements. Walk-in wardrobes look great if they are kept tidy, however a plus for having doors is that it can conceal any mess and give more protection for clothing. Another trend for walk-in wardrobes is to have smoked glass doors mixed with open elements this could also work with matt lacquered doors. Alternatively you could choose to have open elements for items such as bags, shoes or coats (things you know that are easy to keep tidy) then hinged doors for other modules.

For anyone else reading this thread, you can now get aluminium internal sliding doors either frame or surface fixed. These come fully glazed, in the steel look and even as frameless glass sliding doors. Happy to help with product advice and suppliers if you'd like to get in touch. Hope this helps Kind regards, Nick

Sorry, just stumbled across this and thought we'd chip in - in case anybody else came across it. There are load of good 3 and 4 bar options with different profiles: heritage internal doors We'd be intrigued to know/see what you ended up going for? And how you feel about it now?

You need to consider the space into which your doors open to. Ideally opening out of the new extension. If its not too spacious, or might cause things to be crammed, only then can you go for bifold. Bifold will really only come in handy if you have a problem with space. Do you have pictures or a plan you can share?