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they are but still a opening tamz has the right idea just cement it up,anyway half the tenants i visit are more likely to die from the filter in the hood catching on fire because they never clean themAren't cooker hoods extracor fans? just blow out, not suck in? --- first thoughts my friend 🙂
or the grease on the hob catching alight, its like water, bleach and a cloth was never invented with some tennants.
Reply to the thread, titled "boiler flue terminal too close to a cooker hood terminal" which is posted in Boiler Advice Forum on Plumbers Forums.
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