jmatthes

Yeah it's a gas boiler but supposedly works well with a cylinder with excess power using that as a thermal store as a whole smart setup

Wow, i thought the board they provide would be enough to kind of work, but also surprised to hear that even with 150mm it didn't work as well as you had hoped! I may have to do more research on alternatives and plan how to make everything work. But even with the heat loss of both radiators and UFH, surely the lower temperature vs radiators would make them more economical to run? But even if i went for heatpumps, UFH was always mentioned when speaking to companies. I actually hadn't considered it massively aside from the trickle vents and potentially a log burner to help draw air from the room. But i hadn't considered a dMEV in the kitchen though, i had only planned for a timer based fan in the bathroom but the greenwood you suggested may be a better and smarter system. I had been recommended against a heatpump by my plumber for a couple of reasons such as insulation (which I'm fixing and improving) and a lack of engineers in the area who could work on them. Having discussed with him he recommended a boiler from a company called "Navien" along with a tank down the line with an immersion heater as i plan to have solar in the future. This is his current system where excess power is used to heat the water tank after the batteries are charged. With power costs what they are today and probably for a few years, I've heard they're quite pricey to run since they "cheat" and use a heater in the water tank to bump up the temperature.

Having just looked at the windows still being fitted, it looks like they're using cans of foam, no signs of tape. Do you have any suggestions or recommendations on a website or program that may make the process of calculating heat loss easier? I had found 1 by Proctor Group to calculate the U value but a lot of their options are specific to their product line. At the moment my highest priority is trying to decide if something like Continal "SlimFix" or these retrofit UFH systems really do work efficiently on uninsulated concrete as I've had the sales pitch from them. https://www.continal.co.uk/system/slimfix This was the system I was looking at and I had looked around on the internet and this forum as well of people discussing such matters. But it was never clear if they were putting pipe directly onto the concrete and putting screed over, or if they were using this retrofit system with the grooved polystyrene boards. I understand it's not as good as if they were on insulated concrete, but would they still be more efficient/cheaper to run than traditional radiators? The idea of digging and replacing the concrete and insulating it has been on my mind but is a big undertaking.

Hey all! TLDR: Heya! We got an old house, lots of work and decisions to me made and done!😮‍💨 As the title suggests i would like to think of myself a DIYer but not a so experienced one but you'd only learn by doing! It's frustrated me to no end that I'm not as practical as i'd like to be, anything to do with computers, programming, 3D etc is a different story. Hope you guys could help lend some of your experience. My girlfriend and I have just purchased a 1959 semi-detached bungalow which doesn't look like it's ever been updated, or if it has been... it's not been updated well with so many corners cut it's more like a circle. I've had 3 plumbers come to look at our system, 2 couldn't be sure if the heating is a 1 pipe or 2 pipe system, and the 3rd thankfully so confident it's a 2 way, he'll put money on it. As I type this the windows are finally being replaced and have already started to feel warmer! but still a bit colder inside than it is outside. With having moved in not too long ago and things still packed away. I'm hoping to take advantage of that and try where I can to do things right and get the place rewired from the get-go! Heating will be next. The house is a bit of an odd shape at the back and everyone we've spoken too has suggested to square the back off where the conservatory is which has led us to look to reconfigure the layout of the inside overtime, but bearing in mind this is a multi year project having been quoted 60k for a 25m2 ish single story extension to replace the conservatory and build to the side a bit. As we look to reconfigure over time, the main dilemma fighting in my head at the moment going back and forth is how to do UFH! All the radiators don't look like they've been updated since with no TRVs and just big blocks of iron. We know which rooms won't and will change and by how much thanks to the magicplan app, We've also got the original planning permission for the house when it was built. We supposedly have 6" (152.4mm) of uninsulated concrete floor under our delightful carpet and lino floor (no asbestos). I've spoken to companies like Wunda, Continal, Nu-Heat etc about retrofitting on top of our slab knowing we'd lose head height. But they seem confident their 15-20mm channeled polystyrene boards with the pipes embedded into them would be enough insulation to keep heat loss going into the slab to a minimum and I think they said max 8% downward loss. Supposedly the bottom thickness between the bottom of the pipe and board is the same for the 15mm or 20mm boards, they just reduce the height at the top and use smaller pipes. The other side of the battle is thinking do I just break the concrete room by room and redo the floor but i'd look to do this DIY! The main reason I'm contemplating UFH knowing having the whole house done is known to be really pricey, is because we know some walls are going to be removed when we eventually extend and reconfigure. We intend to keep the current radiators in the rooms that will change, such as bedroom 3, Kitchen, bathroom, and dining room and put UFH in the lounge, hallway and bedroom 2. In the future, we will extend the UFH to the other rooms and have had these UFH companies look at the current layout and our future intended layout to make sure the system could flow into the other rooms after the extension. This turned out to be a longer post than I thought but good to get it all written in one place! Any suggestions, or insights are GREATLY appreciated!