I had to replace 3 or 4 strips in a wood floor in a walk-up 3rd floor attic
that is currently made of unfinished 1x3 tongue and groove pine. I bought
1x3 tongue and groove pine from a regular lumber yard for the replacement.
But, the new T&G wood is just slightly smaller than the old T&G flooring.
So, when I put the 3 or 4 replacement strips in, I am left with small gaps
of about 1/8 inch.
I am refinishing the walk-up attic so it will be a useable space. The floor
doesn't have to be perfect, but my plan is to clean up what's there and then
just put some polyurethane over it.
What would be some possible choices for a filler to use in the small gaps
between the pieces? I am trying to figure out what would be a good filler
that would look okay and hold up and maybe take the new polyurethane coating
reasonably well. I know nothing will look perfect, but what would be a good
filler to use for this?