I am converting my garage to a dining room and would like/need to reroute the gas pipe from the gas meter (which is in the garage) underneath the floor of the garage/dining room. The floor is currently concrete but will be built up about 190mm with polystyrene/styrofoam (not concreting to save a few pounds (the garage will eventually be demolished and a 2 story extension built which will need a new footing (hence not wanting to spend money on something that will be ripped out 3-5 years down the line).
My plumber is insistent that the ducting for the gas pipe needs to be a special "made for the purpose" duct vented at both ends. I don't have an issue with the venting but wanted to know whether any type of ducting that protects the gas pipe is OK - for example a length of waste pipe?? Or a timber (narrow) box. I also know that the gas pipe must not have compression fittings.
Any thoughts on what is and what is not necessary?
My plumber is insistent that the ducting for the gas pipe needs to be a special "made for the purpose" duct vented at both ends. I don't have an issue with the venting but wanted to know whether any type of ducting that protects the gas pipe is OK - for example a length of waste pipe?? Or a timber (narrow) box. I also know that the gas pipe must not have compression fittings.
Any thoughts on what is and what is not necessary?