Hi, our builder recently fitted some clay drop-in chimney covers for our dripping chimneys and one of them was for a gas fire. The first two are regular 205mm ventilated caps but the spigot for the clay drop-in GC5 he used for the gas, in my option, is too small at just 170mm externally and 135mm internally. This is for a 5.3kW glass fronted natural gas fire in the living room and the chimneys are the original 1920's brick type that shares a breast with next doors chimney.
His response was "they didn't have any of the 205mm versions in stock and I'm not making two trips up the ladder".
The gas cap in question looks like this
Is this safe or is the smaller spigot size too restrictive? All of the existing chimney pots were the same size and the 205mm elephant foot caps look like they fit perfectly so that must be the size of all the pots.
Secondly he used silicone sealant to fill in the large gap left by the smaller spigot.
The builder feels as though the job is complete but the undersized spigot on the gas cap is really bothering me so any advice on this would be greatly appreciated!
His response was "they didn't have any of the 205mm versions in stock and I'm not making two trips up the ladder".
The gas cap in question looks like this
Is this safe or is the smaller spigot size too restrictive? All of the existing chimney pots were the same size and the 205mm elephant foot caps look like they fit perfectly so that must be the size of all the pots.
Secondly he used silicone sealant to fill in the large gap left by the smaller spigot.
The builder feels as though the job is complete but the undersized spigot on the gas cap is really bothering me so any advice on this would be greatly appreciated!
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