NZ Natives that we use regularly are Rimu, Matai, Tawa, Totara, Kauri, Red Beech to name a few, most floors that we install we source recycled timber. We also use a lot of imported Jarrah, Kwila and Oak. We can source most timbers and custom make one off runs to suit your project.
Regularly vacuuming your floor and a damp mop
Yes, if you have borer or damaged boards it is possible to replace individual boards.
This is a gap that runs around the perimeter of the flooring. It allows the expansion and contraction of the floor.
Yes, this is due to seasonal changes and humidity levels of the area surrounding the timber. All timber breaths and never stops moving in it environment. Different timbers move differently so gaps may appear bigger in some timber and not so much in other timbers.