I am living in my current property since 2018 and as such I am now in the NHBC phase of the warranty for any new major issues.
In my initial builders warranty period however I reported an issue with water ingress to our master bedroom during periods of heavy wind driven rain. The builder made efforts to sort the issue when it occurred. It would sometimes go long periods without the issue presenting but would always crop up again. I have had other reputable contractors inspect after losing faith in the builder and with the exception of a few suspect tiles being replaced the issue still occurs in adverse weather. Water seems to present on my gable end wall truss and run down in to the corner of the bedroom where it shows on my ceiling.
One of the contractors that attempted to source the ingress advised that it could be due to the lack of a lead tray DPC in the chimney (not visible). I can't find a copy of the NHBC standards for 2018 but is it likely that this would have been a building control requirement and as such something the NHBC may enforce the builder to rectify or do themselves if it is in fact missing?
Basically where I stand at the minute is:
*I advised the builder, even though it has been a long time that I contacted NHBC and they said I need to chase him to look again since it was reported within the 2 years.
*He surprisingly agreed and said no problem he will take a look (yesterday I called him and hasn't been in touch yet to look at the issue but seemed genuine)
*I'm preparing for the possibility of him wiping his hands of it and having to contact NHBC so I'm trying to gain knowledge on the subject.
Any info on whether the lack of a lead tray could contribute to the issue im describing and whether this is a requirement or just best practice would be greatly appreciated.
Please ignore the dry verge cap sitting out in photo, it has since been clipped back on. Water is presenting in the area circled.
Thanks
