Hi,

Some parts of my timber floor sinks (on the yellow sticker part). I guess the cement floor below the timber wasnt done well. Note that this is not the timber-floor popping out.

To fix, I thought of drilling a small 2 or 3mm hole, and then 'inject' in some pure-cement to fill the bottom part.

any comments/ideas ?

That particular piece cannot take out? Take out, tampal and put new piece.
And solid wood will dent like that?

how many "sunken" areas do you have ? and how deep is the largest indent ?

normally there is a layer of waterproof plywood between the cement floor and wood pieces.

if the indent is less than 1mm, can consider to add filler and a few layer of clear coat to even it out.

-delete-

This post has been edited by AbbyCom: May 14 2023, 10:14 PM

Edit : Just saw yours is timber? I think my comments on SBCs/vinyl below doesn't apply, but try finding out if there are any other layers between your timber and cement floor.

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Not only the cement not done well, it's the cement cracked below the SBC/vinyl piece. My reno contractor lied to us that it was the SBC bad, the SBC supplier came to assess it and corectly identify it as buckling (cracked) cement layer due to bad workmanship. Contractor kept insisting SBC bad, but then said will put extra padding when changing the 'bad' SBC pieces/panels - meaning he knew it was uneven flooring due to cracked cement.

We observed the rectification process, and confirmed it was cracked cement causing uneven surface which the SBC then sinks into. This happened almost immediately after renovation completed (within 1 month).

Some of these panels have a thin layer of sponge between SBCs & and floor to absorb impact, so injecting cement won't really solve the issue, since the cement will be on the sponge and will also crack. Maybe inject silicone?

This post has been edited by AbbyCom: May 14 2023, 10:16 PM

Mine is timber floor. Yours is SPC. I recommend that you get contract to do flooring and SPC, so such issues will not arise