The 'right' fixings for coupling doors and windows?

[STEVEROG]

What are the correct fixings that should be used to 'couple' a door and window together AND what's the right way to do this?

I can't find any information on what's correct apart from the odd note about using screws. So, specifically..

(a) Are screws the correct method?
(b) If screws are correct, can plain steel be used or should they be stainless?
(c) What size screws should be used?
(d) Do you just rely on the screws 'holding' in the plastic?
(e) Where is any silicone applied?

Thanks in advance

 

[crank39]

Bay pole screws, they come in 40mm to 80mm, self drilling head so will blast through steel reinforcing, pan headed so as not to pull through he pvc, be careful not to over tighten if theres no reinforcing though as they can soon strip the pvc and wont hold, tighten up just till the profile starts to deform, if you have some quick grips then clamp the 2 frames together to stop them pushing apart when screwing and don't put the screws in the bead track or deform the pvc where the beads locate as they'll be a pain to seat

If screwing a door to a window put the screws through the windows into the door, it saves seeing screws all the way up the door frame everytime you open it, use a thick bead of silicone between the frames, if your using a frame coupler put a bead of silicone on both sides

 

[STEVEROG]

Thanks for the info, much appreciated.

There's a 7mm thick aluminium coupling bar, maybe I'll need to pilot drill it?

like the idea of fixing from window side for cleaner finish but I was going to do fixings both ways so that I have thes stronger screw head fixes on both sides.

Do the screws need to be stainless......I'm near sea?

Will keep away from bead areas and go gentle on the tightening.

 

[crank39]

Thanks for the info, much appreciated.

[qoute]There's a 7mm thick aluminium coupling bar, maybe I'll need to pilot drill it?

Possibly best to if its that thick

like the idea of fixing from window side for cleaner finish but I was going to do fixings both ways so that I have thes stronger screw head fixes on both sides.

Really is no need

Do the screws need to be stainless......I'm near sea?

The bay pole screws are zinc plated so shouldn't be any issues, stainless screws will be mega money

Will keep away from bead areas and go gentle on the tightening.

Good lad!

 

[STEVEROG]

Thanks for the non-nonsense info, much obliged.

S-

 

[s60tsy]

i use a 4mm pilot hole and clamps when necessary, and 5.0 x 70 normal screws. Ive never liked baypole screws, only my opinion though