glad to see some people don't people don't understand the regulations.
check your your core 1 to 5 manual regarding pipework installation in wall chases. It is stated quite clearly the accepted forms. The ones i gave are acceptable. The reason for conduit is if the wall is to be dot and dabbed afterwards and then there could be pockets of space which could fill with gas if there was a leak.
check your your core 1 to 5 manual regarding pipework installation in wall chases. It is stated quite clearly the accepted forms. The ones i gave are acceptable. The reason for conduit is if the wall is to be dot and dabbed afterwards and then there could be pockets of space which could fill with gas if there was a leak.