Notes from renovation. -Check existing framing. This H1 timber framing does not meet today's Building Code standard (H1.2 & 15 or 50 year durability). Especially for an area, which will become a bathroom. So we ended up replacing the framing. -Rimu timber produce very fine airborne wood dust. As a person that suffers hayfever, this wrecked me. Take PPE seriously. -PLS laser takes the cake for best accuracy and brightness. Just don't drop it.