More or heavier coats of finish can make blemishes more noticeable

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Q: My home was built in 1972 and I have a hardwood floor with narrow strips. I refinished the floor 10 years ago. Most of the floor has held-up well, but you see the cracks between the boards. Is it possible to use a heavy gloss finish like Marine finish #13 so the floor would appear solid?

Or would the cracks reappear later?

A: More or heavier coats of finish can actually make such blemishes more noticeable. If you feel the floor is stable, with decent environmental control, why not apply a wood filler to the cracks and do a buff and re-coat?

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