Shower base removal

[roget]

I am trying to remove a shower base in order to replace it with a new one. The old base is 20 years old. I am having difficulty figuring out how to remove the top of the drain that sticks out over the base hole so I can remove the base. Any information on this would be appreciated. Thanks.
Roget

 

[Agile]

You have not specied what your base is made of!

If its steel or fibreglass you could cut a hole near the waste to see how to disconnect it ( by using an angle grinder ).

Tony

PS Can I borrow your thesaurus?

 

[roget]

Thanks for your reply.It appears that it is a white plastic base being held by a black PVC screw in pipe with a flange that screws into a drain pipe that has outer threads. It is a flat circle but has nothing to grasp onto.

 

[Agile]

Some types can be unscrewed from the top using the "drain holes" with a specially made up tool.

However the usual arrangement is just like any sink or basin waste that its just held on with a nut from underneath.

Tony

 

[roget]

Thanks for all the info, Tony. Looks like we will have to take a sawsall to the base and see which way it is attached. Appreciate your help.
Roget

 

[Softus]

It's possible that your shower waste is like the modern ones, i.e. there is no screw like on a bath waste.

The McAlpine traps have, as do many others, a removable 'grid', and from underneath this you can then remove the centre part of the trap.

If you replace the 'grid' then the part that you removed inverts and becomes a tool with which you can unscrew the flange from the trap base.