1. If floor tiling on top of floor boards which are currently prone to
slight flexing, what is the best material and thickness for a sub-floor to
go on top which can then take the tiles?
2. I need to do work on the soil pipe to place the loo in a different
position and cater for the increased height of the floor. The soil pipe is
boxed in internally (i.e. exists through the roof) and from the outside,
looks like metal up to the vent cap.
Because of the combination of manifolds, resin bonding etc. and the
inaccessible position, I think I am going to have to cut the boxed in soil
pipe from the hall below, and let a new section in with the required
branches and manifolds at the correct height.
Could someone explain to me exactly how the plastic soil pipe exits through
a roof? I'm kinda hoping it is like an outer sleeve and the plastic pipe is
free to slide up inside it a bit, allowing me to introduce the new joints
without any work being done on the roof.
Failing that, my only other idea was if it is possible to get a plastic
sleeve for soil pipe so I could chop out (say) a 3ft section above all the
manifolds, make the changes I need to, then replace the section and bond the
sleeves over the joints.