underfloorplumber

@Redoctober There are multiple ways to have an underfloor system fitted upstairs. You can fit between solid wood joists, they just need to be notched out. The joists with the metal webbing can't be notched so you can fit a batten on top of them to fix a spreader plate to or you can fit an overlay system if you have a deck already down, or indeed fit a plate to the underside, that though is a pain in the erm.... neck. Let me know if you want any further advice, I'm happy to help.