My plan for a kitchen move/extension has a critical dependency on being abl e to tap into an internal boxed-in soil stack for drainage. Having drilled a hole in the boxing today I've thankfully been able to confirm with a bore scope that there's sufficient means and room for a strap-on boss to be used .
Given the soil pipe appears to be Osma I figured I might as well go with on e of their strap-on bosses[1] too as this isn't a connection I can afford t o get wrong. Too this end, I've noted from Osma's design guide[2] that 'Sol vent Cement Filler' should be used. Presumably this is given the nature of the joint not lending itself to 'standard' solvent cement?
However, I've since learnt that not only does hardly anywhere seem to sell this stuff (why not?) but also that it's around £20+ for a 200g tube!
So, I was wondering if there are any alternatives (e.g. other brands, stand ard cement, etc) or should I just swallow the cost on the basis that if tha t's what's required that's what's required! Can the cement filler be used o n 'normal' connections too? I was also wondering why it's in a tube rather than a tub-with-brush which I assume is easier to use?
I have also considered whether instead of the strap-on boss if I could cut the pipe and insert a bossed pipe connector[3] in between but I'm not sure if there's any slack to push the upper pipe up to allow this to work.
Mathew
[1]