Yet another Q for pending central heating install.
I need to run the 22 mm flow and return across all the wooden timbers under the 1st floor rooms (a 50's 3 bed semi). Making the notches is ok but these seem mighty big "notches" to me. Also they need to be a little larger than 22 mm as want some clearance to the floorboards above and plan to put some "patches" of pvc for the pipes to expand in. Not being a structural engineer, is it safe to make such large notches in the timbers? Not too keen on the floor collapsing in!
Supplementary Q: The flow and rtn to each rad will tee off from these "bus-like" 22 mm's. What is the best way to do this ie both 15 mm pipes are going to tee off in the same direction from the 22 mm's so one 15 mm has to loop under the other. (Hope that makes sense!)I see Screwfix sell a 15 mm loop pipe, which I thought to use. Is there a better way perhaps?
Thanks