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Can the length of a flue extension pipe (plastic) be placed so that it is touching a gutter downpipe (also plastic)? I never really thought about it before - it was installed a few years ago (gas safe). The boiler is a combi-condensing one.
I'm guessing that as the extension pipe is plastic itself there's no issue with it touching another plastic pipe - perhaps the heat generated by a combi-cond is never that high? There's no sign of any issues.
I'm guessing that as the extension pipe is plastic itself there's no issue with it touching another plastic pipe - perhaps the heat generated by a combi-cond is never that high? There's no sign of any issues.