Interesting? Was it the condron ? There is another make that is total cra p and seen plenty of issues, colour changes, channels breaking off but not on a senior
17.5 isn't standard construction though. From my experience those thin leading tiles work ok for a few years, but once a bit of dirt builds
up in the channels they are vulnerable to problems. Yes condron as well as others.
Seen that on Cambrian slates , busted channels on edgemeres but not the senior slate . I'll keep my eye open on that.
I have seen blocked channels on moderns and stonewolds and others but they were generally over 20 years old.
The condron senior has not been available around here that long . So time will tell
So had the roof redone, pitch of the roof is 19-20 degrees. They have only done a 70-80mm headlap on each tile instead of the recommended 100mm for the pitch. Will this cause issues and should I get them back to re-do at correct headlap? Luckily haven't paid a penny yet. Roof is 3.5m long and 3m wide.
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