(this follows on from my off-topic parquet post...)
Made a stab at laying my wooden floor. There are several theories about technique so ended up with a fusion of geometry and much reference to my favourite philosopher Heath Robinson. Bostik Laybond floor adhesive is brilliant, if gooey and messy, so lots of wipes to-hand.
Heavy tool boxes and dead batteries are used end of line to keep freshly laid sections square - or weighed down, as the floor is slightly wonky and the blocks are slightly different thicknesses. The set-square is my bible.
I had a few kcuf-ups where individual parquet blocks slid about and left big gaps (effectively aquaplaning) even though - or maybe because?, they had 24kg on top of them. The glue is so strong (although still completely flexible) it ripped up the latex cement floor rather than coming un-stuck from the wood. Balls.
Once a central herringbone spine has been laid and the glue has set, it's easier to slot in the rest. It's all tongue-and-groove. But as these are reclaimed blocks, adjustment by sanding down edges, has to be made for a good fit with each neighbour.