This is my first post here.
I'm moving into a victorian house in a few weeks which has no central heating. And in part to keep costs manageable, but also just because I enjoy DIY, I'd like to see if I could install my own radiators and pipework, and get a GSR heating eng to take care of the boiler.
I've spent hours upon hours reading forum posts, watching Youtube videos, and reading the part L regs to try to determine the best set up and still have a few questions.
I'd be looking to install a 22mm/15mm twin pipe system with an upstairs and downstairs branches, but I'd like to hide the pipes, and there's a concrete floor downstairs.
Despite reading dozens of posts on the very subject and looking at the building regs, there appears to be no real consensus on how to do this.
Would it be best to keep pipework for both branches under the first level floor boards and supply the downstairs radiators from above? The "problem" I see is that due to door ways I'd need to have at least two drops, so I think a drain off value would be required on one radiator per drop. It also means two sets of 22mm piping (one for each branch) would be routed through the floorboards. To be honest, given this configuration, it seems a single branch/zone system would be easier.
Another option is to chase directly into the concreate and make a track perhaps 2-3 inches from the wall supplying each radiator. As there'll be an engineered wood floor over the top, this might be a cleaner idea.
Another option would be to horizontally chase into the wall at the skirting board. This would make it easy to service the pipes in the future, as I'd just have to remove the skirting. The only issue here is crossing doorways, so I'd have to do some chasing into the concrete floor.
Is one of these options more correct than the others? Or should it be tackled in a completely different way?