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Recent content by StephenF

  1. S

    Underfloor heating worries

    The edge strip is to reduce thermal bridging and also allow a modest amount of expansion for the screed. If you are paying £1500 for 35m2 you are being well ripped off! You need to bring the UFH slowly upto temperature or you will thermally shock the new screed resulting is a cracked / damaged...
  2. S

    Underfloor heating/boiler sizing

    Your UFH needs 2.25kW
  3. S

    Underfloor heating zone getting warm with system turned off?

    Likely a result of the actuator on that circuit is letting by & the boiler pump is circulating enough water to heat the UFH
  4. S

    Propix Underfloor Heating. Insulation underneath?

    To have no insulation only invites a high heatloss downwards - insulation is important. I would not use these panels on a suspended floor.
  5. S

    Wet Underfloor Heating damaged pipe

    Gas tight repair coupling £5.75 + del + VAT. Better safe than sorry.
  6. S

    Advice please - new wet underfloor heating not working as expected

    The above posts are right the red panels are for a screed floor not a suspended floor. The maximum thickness of timber above any UFH system is 22mm. I have attached a typical cross section. The overlay is ok but should only be used on top of a floor as the overlay panels are not structural...
  7. S

    Underfloor Heating Question???

    No problem - glad you sorted it. It may be useful to know there are low profile options if a wet UFH system is preferred.
  8. S

    Underfloor Heating Question???

    If you were using a wet UFH system you could use a system called RETRO18 which is a grooved fermacell board. The board is 18mm and if you insulate with SuperfoilUF (equivalent to a 40mm Celotex) the total additional height is 24mm. Output well over 75wm2
  9. S

    Underfloor Heating Installation

    It does depend on the area you are trying to heat. You could fit a Danfoss FVH-R which is in effect a TRV on an UFH circuit. Size of area at most 15m2. This would run as if it was a radiator (on with the rest of the heating & using the boiler pump) and would connect to the rad system.
  10. S

    Underfloor Heating Flow Meters

    To rule out incorrect wiring undo the actuators so all circuits are open-loop. At this stage set the flow rates through each circuit between 1.5 & 2 lpm. Put one actuator back on and turn the stat off for that room - after a few minutes check the flow again to confirm the correct loop has...
  11. S

    Controlling underfloor heating - what rocks your world? ( & works really well with condensing boiler

    Separate room stat on a 2 port valve.
  12. S

    Electric underfloor heating

    Consider an overlay wet system - cheaper to run. Height change including insulation 24mm.
  13. S

    Whole house underfloor heating as only heat source. Yes or No?

    UFH throughout - it is suitable floor all floor types / coverings. Much reduced running cost, no rads on walls (other than bathroom towel rails) - no issue with it in bedrooms. Far more comfortable & far easier to control.
  14. S

    Which plumbing suppliers do you use? - We'll create a poll once we have a list

    Reliance Water Controls (RWC) & Emmeti
  15. S

    Hi all - just joined the group

    If there is a chance of the units moving in the future then go under but make sure the customer is not storing food in the cupboard - or worse make sure the litter bin is not in the cupboard - chance of going smelly!! Strictly speaking is the units are never likely to move - don't go under them.
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