ufh

  1. P

    Preparation of concrete subfloor for wet UFH

    Hi All, I am doing a kitchen extension. 3m X 6m, and like to install wet ufh. need help to decide the best way to prepare my concrete subfloor for wet ufh. option 1: mot + sand blinding + dpm + kingspan + dpm+ concrete + ufh boards (18mm) + ufh pipes + screed + tiles option 2: mot + sand...
  2. N

    UFH which one best for wooden and concrete floor?

    Hi All, Need expert's ideas. I am extending the house, I would like to go with water-based under-floor heating. The total floor area is 85 sqm and going to use tiles on top of it. I have 50% wooden sub floor (existing floor) and 50% concrete sub floor (new extension). 1. Can someone suggest...
  3. M

    UFH wiring mess

    Hi wondering if anyone can help we have 11 zones of under floor heating which are linked to 3 separate thermostats. the plumber is different to whoever laid the underfloor so he can’t figure out which actuator / wire links to which thermostat so at the moment each thermostat heats up the...
  4. C

    Stain on wood floor- ufh leak or chemical reaction?

    I spotted this dark stain on my wood floor around 3 weeks ago, last time the underfloor heating was on was in December. Yesterday I switched it on again and it seems to be getting bigger. The stain is dark, no cupping or crowning, no sign of water or moisture. Any ideas whether it's a chemical...
  5. K

    Another electric UFH question

    Hi, so 6sqm (3m x 2m) of downstairs hallway, with front door as well as doors leading to: toilet, living room, kitchen, under stairs cupboard and then the opening to the stairs. We used to have a small rad but it got removed due to an underground pipe leak. Since then that hallway has been cold...
  6. U

    Does the TMV control my UFH temp regardless of my thermostat?

    Hi all, I recently (4 weeks) ago had tiles laid on an anhydrite screed floor. I am now able to put the UFH on 'minimum' for one week and then slowly increase the temperature. The TMV on the manifold has 20 deg as it's lowest setting (20 - 70 is the range). However, my stat is sitting...
  7. I

    UFH pipe leak in uncommissioned system??

    I have an uncommissioned wet underfloor heating system in screed. Yesterday the joiner was screwing into the newly tiled floors and may have potentially screwed into a UFH pipe (on the borderline of pipes). The pressure gauge on the UFH manifold was showing around 1.5 bar and dropped to around...
  8. H

    Underfloor heating Not Working upstairs!!

    Hello I wonder if someone can help me with this : we just moved to a new home which has an old UFH on the ground floor and first floor , but it is not working in the first floor , just learned today the the UFH we have called "Kee Triple Tube UFH" (no manual handed to us from previous owner)...
  9. T

    JG Aura Underfloor Heating Controller (Single Room)

    Hi, we have UFH in our conservatory. The front panel of the JG aura unit got detached accidentally. I've clipped it back on and while it still seems to have all the settings and the little flame icon comes on as expected, it doesn't seem to actually fire up the pump and heat the floor. This...
  10. fatmcgav

    Engineered Oak flooring splitting

    Hey there We purchased and installed engineered oak flooring as part of our living room renovation a bit over 12 months ago. The flooring was installed over a screeded wet UFH system using Bona R848 Flexible wood adhesive. The screed was given plenty of time to dry before we installed the...
  11. J

    latex flooring with warm water UFH

    Hi, I've been a plumber (not heating engineer) for 9 years now and finally bought my first home. As my first project, I decided to install a warm water UFH system. I've decided on Mapei Latexplan Trade for the screed which will be aprox 20mm thick. The data sheet states max 11mm per coat...
  12. T

    Energy Saving in an Open Plan world

    We’ve an open plan kitchen/diner/social space, that, as you can see, has a lot of glass. It carries the same thermal delights as a conservatory. Scorchio in summer, freezing in winter. It measures about 8x8m. The area has WarmUp UFH covering it, but I’d have to sell a body part to fund...
  13. D

    Nest E to Heatmiser UH4

    Hello, I am new to this great forum so first of all apologies if this has already been covered somewhere else. Here goes: I have a WB Greenstar 8000 Life boiler for all my radiators in the house. This is controlled by a battery operated, 2-wire Nest-E which was installed by the plumber at the...
  14. N

    Wet UFH recommendations

    Hi, I am planning to install a wet system in the next week or 2, prior to screed arrival for my new kitchen floor. Having done quite a bit of googling, I can't seem to find many impartial places of advice as to what's a half decent and not too pricey ufh system for approx 28m2 in a single...
  15. J

    Can you have painted floorboards with UFH?

    We have painted floorboards throughout our victorian terraced house. We are planning an extension which will make the back of the house a very large open plan space (roughly 7m x 7m). Without much available wall space for radiators, UFH looks like the best way to heat it. I've noted that there...
  16. Niall70

    24v myson ufh with nest thermostat

    Hi guys have 24v myson ufh manifold system set up with 2 zone with actuators. I want to control the zones with nest thermostats I have a cat 5 at the thermostat so that sides all good but I want to know what I need to run from the nest junction box to the manifold. Can anyone help? Cheers
  17. Ubi

    Tile backing board

    Hi all, Can anyone help with question. I am laying some new insulation and electric UFH and need to minimise the floor build up. So far I am laying a layer of DPM, 50mm PIR cut to fit and then was planning on placing a 6 mm cement backed tile back board the UFH mat and then tile on that. I am...
  18. T

    Underfloor heating into existing Y plan heating.

    Hi, some years ago I had wet UFH installed in my conservatory. It was just chopped into the existing Y plan wiring and plumbing. The problem being that when UFH demands the CH/HW runs and vice versa. We have put up with it but now as we are spending more time at home it needs fixing. The best...
  19. M

    Celotex Ga4100 Rigid Board for Underfloor Heating

    Hi all, So I have some spare GA4100 celotex after using it for between the roof rafters. I should have enough remaining to provide a 100mm installation floor base and 75mm screed. Is GA4100 safe to use with ufh? Will the compression be too weak or will the foil cause issues? Ideally I would...
  20. The_Boycie

    DT90E, Nibe Fighter 200P and UFH

    Hi, Just swapped all my thermostats to DT90E's (6 in total) and wanted to know if I should change anything in the installer menus as per my setup. The old thermostats were 3 wire (Live, Sw-Live and Neutral) and the new ones I've wired up with just 2 wire (Live and Sw-Live). I have a Nibe...
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