Reasonably priced Bi-Folder doors?

We have aluminium bifolds across a 5m span. They were fitted about 14 years ago and have never given us a moment of issue.They are lovely when they are open or closed. They are incredibly heavy but the mechanism makes them really easy to open. Make sure you buy a 'slave' door design so that you can just open one door without having to use the bifold mechanism fully.

My advice would be to get a few local quotes - no big names - and compare from there. I also agree that you should avoid the blind inside the glass.

Sure you want bifold? The amount of creepy crawlies and flies that'll have a green light straight into your kitchen wont be quantifiable in summer! (Esp if you have a green garden).

11 years on from installing bi-folds, I can safely say I don’t recognise the problem Sam mentions. I love them but then my room faces south.

Can’t tell you who is heap but can advise on internal blinds. Don’t. They go wrong and look terrible. Have roller or external blinds

We’ve had our Origin four panel bifolds in for just over 5 years. They’ve been a nightmare from start to finish, the Qlon foam gasket has been replaced 4 times because of shrinkage which causes drafts, I’ve had condensation on the inside of the bottom sill from the start which they’ve blamed on a multitude of things which have all been attended too but it still comes back. I’ve been on to the installers again because I found surface mould on the sill behind the sofa so now the only option is to take them out and reinstall them to see if that cures it. Think long and hard and look at all the options before you install these things.

Thanks all for the comments so far. I think bifold makes the most sense, as it is for an outhouse, and been approved already by council.

Anyone tried the online sellers? Or recommend particular brands or local companies? I am in West London / Middlesex if that helps with specific recommendations.