underfloor heating

Hello, Just looking for some advice in advance of undertaking any work and/or getting quotaions. We have a very tired bathroom floor - a 'traditional' suspended wood floor and floorboards with sealed cork tiles over hardboard. This has lasted some 28 years but is going to be replaced. We are...

We decided to dig up our existing ground floor so we could have underfloor heating installed and this is what the builder did - also plays by local building inspector. Excavate the floor to a depth to accommodate the following 1) Compacted scallping to a depth of 75mm 2) Sand blinding. 3)...

Hi Everyone, Recently moved into a 1920's mid-terrace. We're planning to add underfloor heating downstairs and i've been looking at the best way, plan to do most of the work myself. There are 2 options im considering, 1) Remove floorboard, add a timber to joist, sit 100mm celotex 120mm down...

Hi there! I'm looking for advice on underfloor heating, or for people to tell me if the following is not a good idea. I have a house from 1981, uninsulated concrete slab + bitumen painted DPM + 50–60mm screed. We want to retrofit UFH on the ground open plan floor (40 sq m) but the ceilings are...

Hi everyone, the new place we're moving to has UFH. The plumber came and indicated that the flow and return is reversed, as in the top row you see here is colder than the bottom row. He said that in all UFHs he's seen, top row needs to be the flow. Would this cause any problem if I went ahead...

Hi all, I'm looking for some advice please? I'm currently building a 2 storey house, and the plastering was finished approximately 4 weeks ago. However, due to the cold weather (it's barely gone above 0°c in the daytime and as low as -12°c during the night, for the past 2-3 weeks) it still...

I have 6 circuits of underfloor heating on one manifold. The first 4 circuits are through a concrete slab the last 2 are under a suspended floor. The first 4 are great, they warm up very quickly, the last 2 do not heat up much at all. In trying to diagnose the problem I have turned off the...

I am installing floor insulation for a ground floor (bungalow) bathroom, that will have wet underfloor heating. I have already cut up and removed the old concrete slab and dug out soil/rubble until the top of the footings were exposed. I am now faced with a decision of whether to have the...

Hey all, I have two areas that aren't getting heat, my googles seem to suggest an airlock/blockage of sorts. I've attempted to flush the system through, see links below for actions taken: Tank/Boiler - Open fill valve Manifold When draining this a tiny bit of water is flowing out but not...

I recently had an electric underfloor heating (UFH) system installed in my flat. The installer initially shortened the cable from the UFH system, but later realized it was too short. He attempted to extend it by using cable connectors. Afterward, the sensor stopped working and displayed an Er1...

In the summer I replaced a massive Warmflow Bluebird 200 oil boiler holding 50L with a Grant Vortex 36-46 holding 21L. As its colder I have now switched UFH on but boiler short cycles every minute once up to heat. There was no short cycling with the Warmflow boiler. The UFH is set to 45c flow...

Can anyone help? We installed a brand new Veissman Vitodens 111 and underfloor heating system (Ambiente Manifold, Grundfos ump3 auto pump, and Heatmiser Controls) 18 months ago. We've had no issues at the tail end of winter 2022 and all of winter 2023; but when things switched on this week its...

I have a somewhat unusual challenge… My underfloor heating system has been designed for a 60 degree flow temperature solely to satisfy the heat demand of a single double-height large room. In reality we have been running it at 50 degrees because that is enough except on the coldest days. It is...

I'm hoping for someone to help explain the below - I'm not an experienced DIYer but always willing to learn... We have wet underfloor heating on the ground floor and one of the old underfloor heating thermostats (from about 2012) blanked out after a power cut. Basically, the screen never came...

Dear plumbing and central heating gurus, Good evening. I recently noticed that underfloor heating pump is leaking. The heating is working. Due to the leak, boiler pressure keeps dropping. See the photos where the rusty water dripping through. I am wondering, for fixing the leaking, do I need...

Hi everyone, we're thinking of getting some works done in our loft and have a chance to get underfloor heating installed. I have been reading around on this forum and the web and would like some advice before deciding on next steps. We want to get 3 x underfloor heating mats (UFH) across 3...

Hey folks, I’m in the Uk and looking to replace my Danfoss TP4700 with a new thermostat (still searching the similar model with less hassle to replace), the 6 actuators are broken so need to be replaced. The actuators are Giacomini R473 230V 2 wire normally closed actuators, it is difficult to...

I’m in the process of acquiring a new boiler due to the conversion of my loft and the installation of a mechanical ventilation and heat recovery system. I’ve recently discovered that Google Nest is unable to handle multi-zone systems and reverts to a simple on/off thermostat. My preference would...

Hi all I'm having a kitchen extension built and getting UFH installed - the quote for that is £2900, which sounds about right to me. Eventually, I plan to install UFH in the rest of the house myself, so I've asked for a quote for putting a four port manifold on the first floor too as part of...

has anyone attempted a "diy" to replace the flow meters and valve pins on a warmafloor UFH manifold ? also how easy is it to just replace the whole thing as I'm seeing manifolds for under £200 and wondering if its worth buying parts or just replace the whole thing but I'm not sure how straight...