ufh

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...

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...

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...

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...

I have a fully operational 2-zone wet UFH system in the ground floor of my house. Suspended floor with PIR boards between joists, pipe laid on top in a S&C biscuit screed. Builder ran the flow and return for one of the zones under the joists of the cupboard under the stairs. The stairs go...

Wondering if you tilers could advise please? I will be laying a kitchen floor, 28sqm. Tiles are limestone, 600x400mm. 12mm thick. What would be The recommended trowel notch size for these tiles? I intend to stick a decoupling mat on the screed first, as I’ve got wet ufh. Would a 6 or 8 mm...

Evening all. Looking for some advice on a wet UFH install. I have a SCU209LED-TM wiring centre, which helpfully has no terminals for a 2 port valve (which is installed on the flow to the manifold). Link here: https://underfloorheatingexpress.com/amfile/file/download/file/6/product/277/...

IMG_20201025_164001 by AndyCW62 posted 29 Oct 2020 at 9:37 AM I installed this UFH system 15 years ago. Sorry about the embarrassing pipework. But it's worked all this time, although it has a leak somewhere so has to be re-pressurised every month. I want to fix this, so I'm looking for obvious...

IMG_20201025_164001 by AndyCW62 posted 29 Oct 2020 at 9:37 AM This brass component is leaking. I can't find anything that looks like it online to try to get a replacement. The top bit looks like an automatic air vent, but the body? Any help identifying this would be appreciated!

Hi, I am not even sure if I have a problem or not. I have had underfloor heating installed but the manifold creates a whirring / humming sound when running. The guy who installed it says that is the noise they make. I am not sure if this is truly the case and he can’t be bothered to sort it. I...

Hi DIYNOT I've searched this forum but not found anything matching my current issue, so please kindly help me. I have a property with wet underfloor heating, a REHAU system with 4 zones each with their own REHAU Star 20 thermostat. These are basic analogue dial thermostats. My intention is to...

Hello all I'm planning on having an UFH system put in, around 30 sq. m, in size. Pipes will be screeded in around 75mm thick, above a 100mm of insulation. From looking around at various websites, it's thrown up more questions than just picking a kit. I see various brands selling 'single...

Hi All. I have recently had an extension done and we have UFH on just the new extension, and radiators upstairs etc, in the house we have a nest thermostat and a heatmiser stat for the UFH area. The issue I am having right now is that the nest is the only control for heating the radiators and...

I am having a plated underfloor heating system installed between the joists of my suspended timber floor throughout the house, so, I was wondering what the best subfloor type is to lay over the joists when the UFH has been installed. So the floor joists are at roughly 450mm centres which is...

Hi All Apologies if this is answered elsewhere, I couldn't see an answer but I may have missed it I have a crap combi boiler thermostat, I would like to replace it. (It's in the wrong place, hardwired and not very capable) We are having an extension built this year, and will add wet...

Evening all. I have enquired about having a air source heat pump fitted after seeing adverts on social media. Very sceptical. I have a solid brick detached property with no cavity. Wooden windows. Poor insulation. They said I’d benefit massively from the RHI scheme due to these reasons...

I seem to have what must be a common problem when using underfloor heating with a boiler however I haven’t managed to find a standard solution online. The boiler cycles at a high frequency due to the difference in boiler power compared to what the underfloor heating manifold will accept. Setup...

I have installed heat spreaderplates between floor joists and installed wet UFH. I took care to stabilise the floor as much as possible with noggins and aluminium roof plate straps adapted to size to hold the joists as an additional measure. I have placed 18mm t&g chipboard P5 flooring on top...

Hi, My partner and I are having an extension on the back of our house and we would like UFH throughout the downstairs. Most UFH systems I have found aren’t the best for wooden floorboards and the floor height would raise substantially, so I was wondering about the feasibility of replacing the...

Hello, We are renovating a lower ground flat in a Victorian mansion block (but inside was completely rebuilt in 1989). In the open plan kitchen/dining/living space my architect has suggested putting down foil, then a layer of wet UFH, Omnie Lowboard 15 straight on top of the concrete slab...