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underfloor

  1. M

    Question on underfloor heating pipe conduits

    Dear community members, Got a question here in hope someone can help to advise. I recently got my extension done with U/F heating installed. The manifold is in the garage next door so there are four pipes pass through the wall. The work is done and is working ATM. I wanted some plumbing work...
  2. U

    I Need Your Help! Underfloor Heating Not Working - Flat with HIU

    Hi Plumbersforums Experts, I have a question that I hope the experts in this forum can help me with. Our underfloor heating (water) has stopped working a few weeks ago. We live in a new-build block of flats with a central boiler and an HIU unit in our flat. I have asked two engineers to...
  3. M

    Boiler solely for underfloor heating circuit

    Has anyone ever fitted a gas/lpg or oil boiler solely for underfloor heating? Piped up to a manifold.
  4. P

    Hybrid system for heating and underfloor

    Hi All, New here and first post. Currently working with a client on a refurb in Spain and would appreciate your thoughts. The client has a new 500L tank that is currently heated via a boiler and some (defunct) solar panels. He would like to change this method to ASHP and new solar which is no...
  5. A

    Stopcock not turning off all water to house - pipe leaking underfloor

    I’m looking for a bit of advice as I’ve just had a plumber around so wanted to see if his theory matches others. I’ve just inherited a house so wanted to start renovations, when I went to pull up utility tiles noticed they had started coming up..remove them and there is a stretch of cement that...
  6. B

    Biocide for underfloor heating?

    How essential is biocide in UFH? I have brown dirt in nearly all flow-meters and heard different views on how effective biocide (such as X700) may be. Some say brown colour is from iron particles (magnaclean is fitted) other say its from bacteria living in the pipes? On a close topic: Is it ever...
  7. S

    Underfloor heating worries

    Hi guys, I'm having some trouble with my builder and the plumber who fitted my underfloor heating. In a nutshell, the plumber has laid Hetta aluminium pipes over c. 40 square metres comprising of two zones. The builder has then laid around 6cm of semi dry aggregate-based fibre screed. He's then...
  8. R

    Underfloor heating clean

    Not cleaned one before any tips before i get involved, not sure its a problem or boiler People tryimg to generate work (Boiler insurance engineers)
  9. bozor

    Dirty water in underfloor heating loops - how big a job to drain/clean them?

    Hi, I have been noticing my underfloor heating taking longer than usual to heat up. Decided to take a look at the manifold and noticed the water in all the loops looking a bit worse for wear: While not super urgent right now, I think I should get that sorted out in the near future. How big a...
  10. U

    underfloor heating. one section not heating.

    Problem with activator in just one area of the UFH system. I don't know how to take off the activator to check the pin. No problem with water flow. Not sure how to handle the flex coming out of the activator. I know the pins aren't working as the water gauges are not responding (that's what...
  11. R

    Underfloor heating flow won’t get up to temp

    Hi all. As above having issues with my UFH. Boiler fires up and works as normal . Issue is the return stays cold and as such when the boiler switches off when it reaches temp the flow stays about 35 degrees and the cycle continues . Have had it running with just one short loop open , pump on 3 ...
  12. A

    Underfloor heating - manifold valve leak

    My underfloor heating has sprung a leak where one of the pipes reaches the manifold. I have tried giving it a bit of a clean and tightening it, but to no avail. Every time I re-pressurise the system is goes again. Is it as simple as shutting off the water supply to the heating and replacing the...
  13. M

    looking for a Wunda underfloor heating plumber - London

    I'm looking for someone that has experience with the Wunda underfloor heating system. I'm based in Mortlake SW London
  14. Christopher buzzard

    Uponor underfloor heating valve.

    Can some please identify the valve on this underfloor manifold ( with the black wire coming out of the top). Have an issue where the system is turning off every 10-20 minutes and staying off for a while then coming back on again. The room can’t get up to temperature because of this. Power was...
  15. jontyking

    Polypipe underfloor heating not working

    Complete amateur here. I had a Polypipe underfloor heating system put into a new extension 3yrs ago but the plumber who fit it is now no longer available - he's just had a career change, he didn't go out of business. It's just a single zone system connected to my main central heating system but...
  16. kenjiru

    Underfloor heating not working correctly

    I've bought an old house and converted it from radiator heating to underfloor heating. I've reused the old gas boiler Vaillant ecoCOMPACT VSC 206/4-5 90 that had an multiMATIC 700 module already installed. Heating work fine for the first floor, but it does not work correctly for the upper...
  17. PolypipeOverlay

    Pipes going in at angle into Underfloor Heating Manifold Problem?

    Is it acceptable to have plastic pipe going into the manifold at such angles as shown in photo? There is definitely stress on the fittings as the pipe is pulling hard to one side on numerous connections. The manifold does not leak under pressure test. Should it be kept as is if it does not leak...
  18. M

    Underfloor heating, no gas and big boiler - what is this?

    Hello everybody, I’ll need your help! I’ve no experience on this matter... I’m about to buy a flat that has underfloor heating. The flat has no gas and the only source of heating, as far as the agent knows, is what looks like to be a big boiler in the picture. There is a thermostat on the wall...
  19. C

    Air Source and underfloor heating in old bungalow

    Hello. I’m looking for some advice. We had a 1960’s bungalow in Cornwall with a wooden suspended floor. The old oil builder is 20 years old and so we want to replace it. We were looking at a Air Source Heat Pump with underfloor heating but the more we look at it the more concerned we are that it...
  20. F

    Can my boiler handle underfloor heating?

    Hi all, Needing some advice on underfloor heating please. I have an approximately 4 year old Vaillant ecoTec Plus 838 combi boiler which is currently serving 11 radiators around the house which includes 2 towel rails. I've heard that if you want underfloor heating you need to ensure the boiler...

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