For external doors most definitely yes! Copper has unique characteristics and is beautiful, like anything it depends on where you apply it.

I'm looking for a door lock suitable for a cavity slider that can be locked/unlocked from either side regardless of what the other side is. Sounds confusing???? Let me try and explain, and please see attached photo... we have a cavity slider between our main bathroom and our guest room (Bedroom 4), like a Jack n Jill bathroom or a Poor Man's Ensuite as they're sometimes known by, and I need a lock for it so that if there are guests they can have the door locked from their side but if someone else uses the bathroom it can also locked from that side.

So we are slowly working to tidy/renovate our house. We are not aiming for white/ultra modern but trying to retain some of the original features (like the dark beams). I have visons for much of the house but still not clear on what do to with these doors. I like the idea of doors opening to the room from the entrance but as you can see, with the sofas it's a pain and restricts the space - with a gap behind one door and the other just hanging open. I can close one to the wall behind the sofa but when little folk go to bed we tend to close it to keep noise down. So I thought about folding but not sure they are OK or not. We could do sliding but we already have glass sliding doors on the other side so it might look odd? Thoughts? The other thing is we dont have as many door options in New Zealand and we.dont have a huge budget. Any thoughts? Thanks

That looks like a NZ house . and possibly even an ex-State House . They were solidly built ( money wasn't a problem ) . But it would need a builder and some investigation , because there will be studs and power and it may even be load bearing . Back in that era , most water and piping was pretty much straight out and down , but there may be piping for water or sinks or showers or similar . You could buy a $100 door at the demo yeard , or a $2500 masterpiece . Tiy might want a small deck and some stairs , you might want a small roof , you might want something more solid . Then you'll need a door jamb , some framing , then presomably paint and maybe wallpaper , Possibly lino or tiles or carpet . And can you match everything , including the paint tones etc , or will you have to redo a whole wall or even the whole room ? Then theres permits and fees and inspections . I'd suggest you won't get much change out of $10k if basic , maybe $25k if you want to go a bit luxe and/or strike problems . But then again , I'm not a builder -- give one a call .