Specialist to find a home heating link under concrete floor

adocholiday · 25-04-2019 4:04pm #1

Hi all,
I recently bought a house that was built in early 00's and the previous owner had all of the underfloor pipework put in for OFCH but didn't put in the rads or boiler. We've had that done and the plumber doing the installation said that despite his best efforts some of the old pipework under the floor is leaking and he can't find any of the ones that are left. To give you an idea of the leak, when I want to turn on the heating I've to open the filler cap to pressurise the system to ~20 psi and after about 3 hours it will be empty. I usually turn off the heat after 2 hours.
The plumber has suggested bringing in a specialist leak detection company to find the leak(s) and then he'd come back and fix them. I'm ok with this but was wondering if anyone could recommend one of these companies in the Dublin/Wicklow area. I want to ensure that we get them all at the one time and be done and dusted with this ASAP.
Many thanks.

Wearb · 25-04-2019 5:31pm

Cant help with a specialist, but does your house not have individual pipes from each radiator returning to the hotpress or to a manifold somewhere? I think that by that period, that would have been the plumbing norm.

Cerco · 25-04-2019 6:21pm

Did the plumber try any sealants?
I saw a video of the tec7 sealant and it looks very impressive.
I am not a plumber so perhaps others can advise.

https://www.youtube.com/watch?v=VJonk66C9Cc

adocholiday · 25-04-2019 7:22pm

Sorry I'm only after seeing I said link not leak in the title. All the radiators are in and working, the problem is that there is a leak under one of the concrete floors so it isn't holding pressure.

Yes the plumber tried 2 cans of sealant and it held for about 2 days but failed then so only solution left is to find it.

DGOBS · 25-04-2019 7:32pm

You could hire a good thermal imaging camera and fill the system, allow to heat up, and search the floor then looking for the pool(s) where your leak is. It should be actually easier find a larger leak like yours than a smaller leak.

adocholiday · 25-04-2019 7:45pm

DGOBS wrote: »

You could hire a good thermal imaging camera and fill the system, allow to heat up, and search the floor then looking for the pool(s) where your leak is. It should be actually easier find a larger leak like yours than a smaller leak.

That's exactly what the plumber did and could only find one connection that wasn't fully sealed under the floor. He couldn't find any other leaks with the camera. He said the specialist leak finders would have much better equipment though

rightjob! · 26-04-2019 5:01am

Google the A Team Dublin,these guys are very good.

Specialist to find a home heating link under concrete floor

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