boger

Thank you for all the suggestions, much appreciated. As I will be doing it myself and not a builder, could you please suggest a reasonable materials. I'd rather pay more for better quality then regret later. Would the below be ok (ordered by layers): Concrete + ARDEX P 51 Primer MICROTEC® Flexible Standard Set Tile Adhesive - ARDEX X 77 Fastwarm 30mm Tile Backer Insulation Board (picked this one as Thermal Conductivity: 0.027 W/mk, others like Marmox Multiboard have 0.034) ARDEX P 51 Primer Fastwarm 150W Electric Underfloor Heating Mat Kit - this is just an example need to read more about it and decide which one to use ARDEX K 40 HB or Mapei Ultraplan Renovation Screed 3240 + Bond It Resistant Glass Fibre Woven Render Reinforcing Monster Mesh Styccobond F48 PLUS + LVT Thank you for any suggestions and/or comments.

Hi All, I have a concrete kitchen floor (house built in 2005) with tiles on top and our kitchen is very cold in winter (when left a thermometer on the floor overnight it showed 8 deg), so quite often our kitchen temp drops to 15/16 deg in the morning (thermostat is set to 20 overnight and is located on the 1st floor), therefore heating needs to run every morning to heat the kitchen up. What I was thinking, limited by floor height, is to remove all tiles (this gives extra 12 - 15mm) and use: 25mm Thermafloor TF70 PIR Insulation Board Kingspan or 25mm Kingspan Kooltherm K103 Floorboard (their technical team told me this one is not suitable for this application) 2x – 6mm SP101 Plywood 2.5mm glue on LVT So in total about 40mm. I have few questions to the above: Is it an option to go to, are there any better options? Can plywood be replaced with 2x 6mm HardieBacker? Would only Fastwarm 30mm Tile Backer Insulation Board or wedi Tile Backer Board + 10mm self-levelling + and LVT on top work? Any solution needs to be able to support kitchen furniture and appliances (washing machine is my biggest worry, due to vibration and movement) What I’m trying to achieve is as much insulation as thin as possible, hope it makes sense. Thank you for any help.