Was asked to service a range oil boiler and the customer commented that they had always been disappointed with the performance. did the usual service on it and found that the efficiencies weren't very good and the CO levels were higher than expected (but still within limits). Anyway I was coming back to fit some pipework in the room behind. When the builders opened up the old chimney breast, this is what we found.
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The joint appears never to have been fitted as there was no trace of any fire cement or sealant on it.
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The joint appears never to have been fitted as there was no trace of any fire cement or sealant on it.