Reviving this thread .....after much experimentation we have now shown without doubt water is coming in through the thresholds and not the frame. Supplier still wont take responsibility and is now saying it is our problem with dpc......can’t be right, all sliders have exactly the same problem, they are in different rooms.
I’m so fed up of this installer not taking responsibility and not even coming out coming to check. We have 2 sliders where the doors are not propertly set so they dont slide smoothly and water is coming in at the junction between the fixed and sliding panels. Easy to see why ... the rubber seals are not aligned due to the doors being out. That is a separate problem to the one where water is coming in under the thresholds somehow. We have so much silicone on there now if there is a UKwide shortage it will be because we have bought it all, it has not cured the problem though.
Has anyone any experience of going to Internorm HQ to get them to intervene and get the problems with their installers sorted?
I might add that as well as the leaking sliders I have a back door that is almost impossible to lock with they key and that door came with clear glass not satinato as ordered. Been in going on 6 months now and still not sorted. I am thoroughly fed up of these people and wonder why I paid the premium for Internorm windows.
Any suggestions guys (polite ones of course)?