big doors.

Found what i am looking for also found out that they are bloody expensive. Over 4 grand for the size I need.

Do you envisage more or less *continuous* glass for the whole width - or are you thinking of 3 separate double doors with brick pillars between? It is a single storey extension, or is there a second storey above it - or might there be in future?

If you want continuous glass and also need to support a second storey, you'd better get a structural engineer on board PDQ! Your BCO will need to be satisfied that it's not all going to collapse in a heap!

I was looking for a supplier of folding sliding doors for an opening between 4.5 to 5m, but the cost is exhaustive for supply and fix but ,hopefully, I have found an alternative approch which will result in the desired effect, at the fraction of the cost. As for steels, the supplier I use gave me the info on what weight and size ,FOC, for some underground steel work ,which the BCO has approved, so theres no problem there.

Out of interest, what was the alternative, we are looking to do something similar for an opening of about 4m.

Cheers Mike

It is simple enough to hinge two doos together to make them folders. You also need a channel and a bar (not necessarily wheeled but that depends on the channel.)

If you can find some U channel to set into concrete for the threshold or just adapt an hanger (unsightly) to run in a straight line that should save you some 4 1/2 thousand quid.

The only sites I have found supply the whole thing, doors and mechanisms. I have found a company who might supply the mechanism and have the doors made up to fit.