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I have a slate kitchen floor and wooden skirting on the walls around (no beading). At some points around the wall there are gaps of around 4 mm or more.

I was thinking of simply stuffing paper in the gap and then using polyfilla to cover the gap (sanding it off and then re-painting the skirting).

Does this sound like a good idea? I am worried about making a mess of the slate floor using polyfilla.

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Is your floor uneven or your skirt/trim too high? Are you trying to fix it or cover it up? –  Jason Aug 21 '13 at 16:42
    
The floor is uneven. Basically I just want to seal the gap to prevent insects coming in and keeping the warmth in. –  Carl Owens Aug 21 '13 at 16:50
    
If bugs and cold air are coming in through this gap, you have bigger problems. Trim is simply used to cover a junction between two different planes, where a gap or ugliness may exist. Trim should have nothing to do with the seal of a building. –  Tester101 Aug 21 '13 at 16:54
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1 Answer

up vote 2 down vote accepted

I would use foam backer rod in the gaps, put down masking tape on the slate (and perhaps above the joint, on the skirting and fill with the polyfila or perhaps a colour matched latex based caulk.

Pull the masking tape right after smoothing the joint down with a finger.

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