uPVC French Doors Questions

[portorikietiz]

Hello. I have draught issues with my french doors in the living room. And I was wondering if someone could provide me with some guidance.

Looking at Pictures 1 and 4 from the inside of the room. At the bottom of the door there seems to be a big gap, should there be an additional seal that covers this gap?

Looking at the Pictures 2 and 3 from the outside. The silicone underneath the whole step is gone, what should I use to reseal the cavity underneath the it? Expanding foam or some silicone? Which one is the best?

 

[ronniecabers]

Picture 1 - DRainage holes , do NOT block !

Picture 2/3 - if you can get foam in there do so , and also silicone

Picture 4 - Well its a wheelchair threshold , so yes I'd expect a rubber seal under those doors but without knowing the manufacturer you are going to struggle to find the right one. Maybe generic ones on the market but can't say ive seen any ( doesn't mean they arent there though! )

I'm guessing they are not brand new and have been in a while?