Have a look at this photo of my waste stack at the point where it joins the clay rest bend:
Two questions:
- The clay rest bend is cracked. The bit between 3 and 6 on the clock if y ou looked at it from above is a bit loose so it's abviously cracked to belo w ground level a bit. It's been like this for years without any obvious pro blems and I'm wondering if I should just fill the clay collar with fresh mo rtar to make the plastic pipe water tight again. Or do you think I should r eplace the rest bend (doable but I'm not keen)?
- What's that ridged part of the plastic pipe called? If it's a fitting ca n you link to one on screwfix or similar so I can see it please? I can't ev en tell if it's part of the pipe or a separate fitting. I assume the ridges are to make sure it beds well in the mortar.