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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Building Questions >> Bathroom floor repair https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1458131437 Message started by TrevorP on Mar 16^th, 2016, 12:30pm

Title: Bathroom floor repair
Post by TrevorP on Mar 16^th, 2016, 12:30pm

Just a quick question...just removed a toilet pan from downstairs toilet, which dates from 70s, and with it came a chunk of black material, same size as pan. It seems that the floor is concrete base with about 30mm of this black coarse material on top.
I need to fill this 30mm pan size piece, but what do I use, was thinking 4-1 sharp sand and cement mix., but not sure, any advise?
Cheers Trev

Title: Re: Bathroom floor repair
Post by woodsmith on Mar 16^th, 2016, 6:19pm

This sounds like solid bitumen and would have been used as the damp proof course over the concrete. I would thoroughly seal the hole with a bitumen damp proof liquid before filling it.

Title: Re: Bathroom floor repair
Post by TrevorP on Mar 16^th, 2016, 7:19pm

Ok, never thought of that, will do as advised, thanks for help.
Trev