Mga sirs! Another question about polyurethane finish on wood (parquet) flooring...

In actual practice, what is the minimum recommended curing time for each topcoat of polyurethane (Hudson brand)? Sa website kasi ng Boysen, it says, "OVERCOATING INTERVAL: Recoat after 6 hours". It also says, "Allow 7 days to fully cure before allowing heavy duty use and 3 days for foot traffic abrasion." (http://www.boysen.com.ph/products.do?item_id=957).

Kasi po yung staircase namin (GF to 2F & 2F to attic, incl. mezz. landing & 2F Hallway), the contractor says na kaya daw matapos ito within the day (2 topcoats; sanding sealer was already applied today) and puede na daw itong magamit (meaning puede nang tapakan) at the end of the day. Refinishing lang po kasi ito and we have not vacated the premises while this project is ongoing. Yung mga kwarto naman ay overnight curing ang nangyari so no problem there I guess.

To clarify, wood slabs po ang staircase from GF to 2F except for the mezz. landing which is TNG (about 2 sqm ito). The 2F Hallway (about 4 sqm. area) is wood parquet and the staircase from 2F to attic is TNG. This whole area will be applied with Hudson Polyurethane Floor Varnish Topcoat tomorrow and I need your opinions ASAP sana...

TIA!!!