I have a new set of double ("french") upvc doors.The half that has the added portion that makes the internal central frame or post seals fine but the other half that closes to this has a draught coming in around the bottom seal near the central "post".There is a slighther draught at the top.I have tried adjusting the plates on the central post to pull the opener in tighter but there is still a noticeable cold wind.Should the black seal be slit next to the plastic base of the post to allow it to flex out to the door?
Thanks,Dave