I'm getting to the final stage in my bifold door build and beginning to think about locks. I have 3 doors, each 60mm thick, laminated from 3 layers of iroko, and opening outwards using Centor E3 top hung gear. The end door will act as an occasional back door, although I suspect we may use it more than we had initially anticipated. The position is moderately exposed to the west so a good seal will be essential.
I'm thinking about a 3 point lock - but not with shootbolts - to ensure that the door is held tight against the seal along it's full height. Any thoughts as to which lock to use? Roto seem to do one where the slave latches rotate a bit like a cam which compresses the weather seal - but do you think this is overkill?
The second question concerns the door keep. The jamb is deeper than the door, so when the door is closed it is not flush with the outside of the jamb which projects a further 60mm. It has just dawned on me that the door latch will drag across the jamb until it gets to the keep unless there is some sort of mod. This is demonstrated in the first pic of the completed project in Jon's thread of the doors after they have been painted and installed and which actually inspired me to give this a try in the first place. In that pic it would appear that there is an extended keep. Was this something you made yourself or is there a keep specially designed for the job?
A second possibility would be to retrofit an additional jamb that is just deep enough to allow for the latch - say about 12mm - and which would be the same thickness as the door. After allowing for door clearance of (say) 3mm, this would leave 12mm to bear on the existing 27mm door stop. Not ideal, but do-able. This would mean taking 2mm off each side of each door to find the 12mm, but at least they've not been finished yet, whereas the frame has received 3 coats of Sikkens Filter 7 and is ready to fit! Thoughts please?
I'm thinking about a 3 point lock - but not with shootbolts - to ensure that the door is held tight against the seal along it's full height. Any thoughts as to which lock to use? Roto seem to do one where the slave latches rotate a bit like a cam which compresses the weather seal - but do you think this is overkill?
The second question concerns the door keep. The jamb is deeper than the door, so when the door is closed it is not flush with the outside of the jamb which projects a further 60mm. It has just dawned on me that the door latch will drag across the jamb until it gets to the keep unless there is some sort of mod. This is demonstrated in the first pic of the completed project in Jon's thread of the doors after they have been painted and installed and which actually inspired me to give this a try in the first place. In that pic it would appear that there is an extended keep. Was this something you made yourself or is there a keep specially designed for the job?
A second possibility would be to retrofit an additional jamb that is just deep enough to allow for the latch - say about 12mm - and which would be the same thickness as the door. After allowing for door clearance of (say) 3mm, this would leave 12mm to bear on the existing 27mm door stop. Not ideal, but do-able. This would mean taking 2mm off each side of each door to find the 12mm, but at least they've not been finished yet, whereas the frame has received 3 coats of Sikkens Filter 7 and is ready to fit! Thoughts please?
