Emmeti manifold to new radiators.

[Jerry]

I've priced it all up and while not cheap it's not much more than copper pipes and much cheaper than using 15mm coils of copper!
My only worry is the PEX AL PEX Pope isn't really rodent proof! Any ideas on protecting it?
Thanks for all the replies by the way, helping the enemy (sparks)

Get some cats.

I am also a sparky!

The price is similar but the labour less. Get yourself and angled drill and a nice 13mm wood drill and get drilling. Don't forget the regs surrounding drill holes through joists. Finally, the pipes pull easier when all the holes line up. You are going to want to spend a bit of time marking before drilling.

The next time I do this system, I will be looking to use the buteline pipes and fitting. This is because they are sealed internally I.e pulling JG pipes through joists etc can scratch the hell or of them. This can make it hard to get a good seal because JG seals externally. Also, tighter radius's and 25 gear guarantee.....

 

[ShaunCorbs]

Get some cats.

I am also a sparky!

The price is similar but the labour less. Get yourself and angled drill and a nice 13mm wood drill and get drilling. Don't forget the regs surrounding drill holes through joists. Finally, the pipes pull easier when all the holes line up. You are going to want to spend a bit of time marking before drilling.

The next time I do this system, I will be looking to use the buteline pipes and fitting. This is because they are sealed internally I.e pulling JG pipes through joists etc can scratch the hell or of them. This can make it hard to get a good seal because JG seals externally. Also, tighter radius's and 25 gear guarantee...

Unless you have rats east straight through the stuff

 

[Jerry]

Unless you have rats east straight through the stuff

Bigger cats then. I recommend a Maine Coon

 

[king of pipes]

Rodents will knaw through plastic pipework I wouldn't take the risk even with al pert. Kop

 

[Jerry]

Rodents will knaw through plastic pipework I wouldn't take the risk even with al pert. Kop

Agreed but how many new builds are 100% copper?

 

[Dobbslc]

Most/all? new builds have solid floors with underfloor heating or microbore plastic buried in the screed.

 

[Jerry]

Most/all? new builds have solid floors with underfloor heating or microbore plastic buried in the screed.

Not really

 

[Dobbslc]

Well it's been a long summer and autumn and winter grafting under the floors but its finally done, almost.... Thanks for the advice along the way chaps.
The upstairs heating was piped up in "normal " copper while I had the floors and stud walls ripped out and was the first part of the heating system to be working. You'll see all the new 7×2" joists I had to fit due to the previous owners bodged attempt at extending the bedrooms into the eaves

Then the downstairs was started!!! After much deliberation I went with the Emmeti manifolds and Kuterlex 15mm soft copper coils pulled under the floors. It wasn't exactly easy getting it to pull up straight at the rads but it was ok. I put it in flexible conduit to protect it under the screed, it's all lagged under the old wooden floors and clipped where I could get to it.

Here's a photo of why I was worried about rodents eating the pipes!


I bought the adapters to fit it to the manifolds that have two seals on them and seem to hold the pipe quite tightly and I only had a couple of small leaks due to not tightening them up enough.


Here it is half finished with a temporary loop for testing, it's now got two more 22mm Kuterlex pipes going to the other manifold on the opposite side of the hallway. Now they were a PITA to fit in! The plumber finished installing the new oil boiler and getting the hot water back on in October, I then connected it up and tested.
All in all it works well and we have heat to all but the hall and spare room that will be done when I'm in there doing the wiring at a later date.
Hope this helps anyone doing something similar in an old house with a new extension and mice!