ufh

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    Ground floor UFH installation - Screed / Insulation Questions

    Hi All We are renovating a 1980s built house and intend to fit UFH throughout. In the existing part of the house the floor is made up of 4" of hardcore, DPM layer, 4" concrete with 2" screed over the top. Given that there is no insulation in the existing floor will overlay UFH in EPS panels...
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    Adjusting UFH Flow Meters

    Hi I have a Solfex UFH system installed by my builder but without any great knowledge (used Solfex design service..) It has three zones, one of which has two loops controlled by the same thermostat and actuators on the return manifold for control. Although the Solfex design defines the flow rate...
  3. C

    Replacement Floor + Overlay UFH

    Hi, I'm renovating and old (~1870) house. Having pulled up the floor coverings and original (knackered) tiles downstairs, I've discovered that 2 rooms and a sort or corridor area have a solid concrete-like base, although all at different heights, while another room has a suspended timber floor...
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    Under Floor Heating Design, UFH - HELP!!!

    Hi, I was wondering if there is anyone that can provide advice on my UFH design (attached). Each Run is circa 75m, I have gone for 150mm spacing at the front as there are large bi-fold doors. The top section has sufficient room height to install roughly 75mm insulation then 15mm pipes and a...
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    Advice on whole house heating -combi plus UFH

    Hi all, I've been using this forum for many years now and found it particularly helpful. I'm now facing an interesting challenge and I'm getting a bit of conflicting advice so thought to tap into the diynot community more directly this time. I currently have a regular boiler with a vented hot...
  6. R

    Electric UFH wood subfloor

    We are embarking on a refit of our ground floor kitchen/lounge and would like to install electric underfloor heating. Any assistance on the considerations would be great. -Large 4ft ventilated subfloor cavity ;wooden joists; chipboard subfloor. Thinking we might use 100mm polystyrene insulation...
  7. J

    Weather compensation on a Vaillant UFH & rad setup

    Am considering fitting the Vaillant weather compensator, the logic behind it makes sense to me but not sure if we have the right setup for it to work properly. Existing system is: 637 Plus system boiler UniStor cylinder Zone 1 - Radiators (upstairs & downstairs) with Honeywell room stat Zone 2...
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    Rads and UFH don't work together

    I have UFH downstairs and Rads upstairs. The CH out from the boiler goes through a Y Splitter and I then have a 2-port motorised valve on each CH circuit, one leads to the upstairs CH rads and is all controlled via one thermostat, the other goes downstairs where it meets the UFH manifold...
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    Delay before turning boiler on when using thermal actuators?

    Hi folks, I have looked for an answer to this but not come up with anything... maybe some experienced people will be able to advise. I am installing an 8-zone underfloor heating system, with a thermal actuator on each zone. I have a wiring centre that will open the relevant actuator when there...
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    Under Floor Heating Balancing

    Hi Have installed an Emetti UFH system under Agilia A screed. Two zones, 3 loops (one large kitchen for 2 loops and one utility for one loop) in a refurbishment/extension. Loops 1&2 kitchen, Loop 3 utility. It has been running for ten days now, I started at 20 C and raised to 55 C by 5 per...
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    Retrofitting underfloor heating - Good or bad move?

    Hi. (First post, so go easy on me ;)). We live in a 1930's terraced house and are planning to do some major renovations to our downstairs in the spring. I've had at the back of my mind installing wet UFH for some time (leaving the radiators upstairs), but have a few complications that I'd...
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