Twice in three years the rubber seal on the Wirqin Twisto waste on my shower tray has parted with disastrous flooding. The first time this happened I replaced the whole unit but it has just happened again. The problem is due to bad design of the seal which is a strip curved round and glued at the ends to make a ring. The joint in the ring gives way after 18 months or so. Ideally the seal should be made from a continuous ring. Any ideas how I can prevent this happening again? Replace the seal with two suitable sized 'O' rings perhaps?

David, January 2009

Throw it in the bin and get a decent waste unit, i had one of these supplied with a heritage shower base. It does not have a waste that passes through the tray and then screws into the plastic trap instead it relies on compression fitting of a white plasic flange which is screwed to the waste underneath the tray, this will fail. Bin it.

S Miller, August 2009