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  • Underfloor heating questions...

    I'm about the rip up the floorboards in my hallway and downstairs bathroom (which runs off the hallway), replace with a ply subfloor and fit a Karndean vinyl floor on top that runs through both.

    There's a large radiator in the hall and a small towel one in the bathroom. I want to get rid of both in an ideal world, and replace with a wet UFH system.

    Here are my questions:

    1. Can I fit the UFH system to the existing rad pipes but regulates the temp so i don't burn my feet?
    2. Are there any systems that integrate into the subfloor to keep the floor height as low as possible?
    3. Will they work with the adhesive for the vinyl floor?
    4. Am i mental?
  • I can have a stab at a couple of them... seeing as I have just had wet UFH installed and will be using Karndean

    1. I beleive not, you run your UFH through a manifold and separate thermostat, so would need a direct line into boiler
    2. No idea, we laid ours in 65mm of screed which is the best system as you then heat the pad
    3. Yes, but you need special adhesive
    4. No... Maybe
    1. Won't burn your feet if heat is well distributed.

    2. Where necessary, we lowered joist height by removing material from them. However, for most, we replaced joists entirely and built up with 1" marine ply to a height that would level with existing floorboards elsewhere once tiled.

    3. Dunno

    4. A lot of jobs you have to come up with bespoke solutions. Keep thinking about it.

  • Why wet? Electric has lower buildup. Will you be insulating under the subfloor?

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