hello
having a chimney built its a concrete linear with vermiculite infill to chimney stack, read on the bag the vermicuite comes in that it can be used with cement mix for infill ,the bricky however says that on all the work hes ever done on chimneys they always pour the vermiculite straight in .The brickys a good bloke and i believe thats how it can be done as well but wondered if any one has an opinion which is better using vermiculite straight or as part of a dry mix sand and cement. as at £20 a bag it ain't the cheapest of material.
on that note anyone know of cheap place to but vermiculite in the cambridge area
having a chimney built its a concrete linear with vermiculite infill to chimney stack, read on the bag the vermicuite comes in that it can be used with cement mix for infill ,the bricky however says that on all the work hes ever done on chimneys they always pour the vermiculite straight in .The brickys a good bloke and i believe thats how it can be done as well but wondered if any one has an opinion which is better using vermiculite straight or as part of a dry mix sand and cement. as at £20 a bag it ain't the cheapest of material.
on that note anyone know of cheap place to but vermiculite in the cambridge area