Hi bros, I am renovating my storey-house basically to remove all existing floor parquet at 1st floor (those 30 years ago wooden stick type flooring) and install tiles.

Is it a must to lay the whole floor with sand cement before lay new tiles (of course better but surely expensive!)?

My contractor told me usually for large area is not necessary to redo all cement, but they can patch with cement any uneven/empty spot before tiling (save my cost). If want he can always do the epensive job.

Do any of you have similar experience in this ? considering cost and long term usage. Really need advice. :-)

Thanks Wei Kee. That mean actually patching (as long as good workmanship) would be sufficient and is not always necessary to redo whole cementing?