Joshua Graham

Hi, I am currently renovating a 60s property as my first home. I am getting an air source heat pump installed, as oil is no longer a financially viable option. I want to run my heat pump at 35 to heat the house using underfloor heating on the ground floor. The ground floor is suspended timber floor, with new sheets of chipboard down. I have been looking into systems that you can lay atop the existing floor and was looking for advice as to what type of pipe centers for this as some places have said 100mm but there are no products out there that do pipe centers this close! I think its worth noting I have underfloor insulation of 60mm of pir and 150mm of mineral wool, and a membrane to protect against drafts, 600mm mineral wool in eves and bead cavity filling. I have also filled any openings i could find, to prevent air leaks. Are 100mm center overkill? Would 35 degrees work at 150mm centers or even 200mm? If not, could I cnc the center my self into my existing chipboard floor or a layer on top of the existing chipboard then lay 6mm of ply? Thanks JG

Hi, new member here, but have been reading this forum for a while. Currently renovating a 60s property as my first home. I am getting an air source heat pump installed, as oil is no longer a financially viable option. I want to run my heat pump at 35 to heat the house using underfloor heating on the ground floor. The ground floor is suspended timber floor, with new sheets of chipboard down. I have been looking into systems that you can lay atop the existing floor and was looking for advice as to what type of pipe centers for this as some places have said 100mm but there are no products out there that do pipe centers this close! I think its worth noting I have underfloor insulation of 60mm of pir and 150mm of mineral wool, and a membrane to protect against drafts, 600mm mineral wool in eves and bead cavity filling. I have also filled any openings i could find, to prevent air leaks. Are 100mm center overkill? If not, could I cnc the center my self into my existing chipboard floor or a layer on top of the existing chipboard then lay 6mm of ply? Thanks JG