How to fix in a brick core in old flue hole?
Posted: Mon Mar 21, 2022 5:06 pm
New gas boiler fitted and a new hole drilled for external flue. The new core was placed in the old hole but not cemented in because of the filthy weather at the time. How do I fix it in and weather seal it now? (Gas fitters not responding to my request to finish the job off). Not much of a DIYer but it seems such a small job to find someone for. TIA.