Q: I just installed unfinished 3/4′ x 5′ in. random length boards. I will be doing the finishing. My question is – would you use trow-able filler on Brazilian cherry, to fill the imperfections/gaps, prior to applying sealer?
(I have read that the Brazilian cherry darkens, but the filler does not?)
Have you used filler on unfinished cherry floors? Have you used commercial products or your own mix from the sanding dust?
A: Brazilian cherry is not cherry, but Jatoba. It does darken and can do so rather rapidly with enough light. I think I would try to keep the floor tight on installation and with good climate control, and if the occasional small crack does open, fill it with a caulking type of product such as Color Rite.