In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Pex spacing for under floor radiant (joist bay)
I returned from vacation to find that the HVAC subcontractor had installed 1/2 pex at 16" o.c. (One run per joist bay) for our hydronic radiant system. He claims this is standard but everything I've been able to find suggests 12" max and 8" being typical for this sort of install. We're in Chicago (relatively cold winters).