Pinholing in Hot Water Cylinder

geoffo · 2 Mar 2008

I recently had my boiler serviced and the engineer noticed that there was evidence of pinholing in my lagged hot water tank. As it had self-sealed (temporarily), he advised that I should place a margarine lid underneath, keep an eye on it and let him know if I noticed any leaks. I know I should have asked him this, but how long will it be before it needs replacing?

Thanks

Geoff

doitall · 2 Mar 2008

Pin holes don't self seal, they make a mess

nickso · 2 Mar 2008

hmm, unless you want a swimming pool in your home id make plans to change it now.

doitall · 2 Mar 2008

Can you post a pic of the cylinder and the supposed pinhole.

ChrisR · 2 Mar 2008

how long will it be before it needs replacing?

Monday morning, 2:37 a.m.

geoffo · 2 Mar 2008

Thanks for your replies lads. Here are your results:-

doitall (1st post) 8/10
nickso 9/10
doitall (2nd post) 8/10
chrisr 10/10

chris wins - well done!

nickso · 2 Mar 2008

damn, i was close that time. chris did deserve to win though

doitall · 2 Mar 2008

nickso said:
damn, i was close that time. chris did deserve to win though

One has to ask what the engineer is doing in the airing cupboard taking the lagging off.

He was there to service the boiler, or did you have a leak on the cylinder, and asked for an opinion.

namsag · 3 Mar 2008

Its called walking the system DIA where you should inspect rads valves etc for any signs of leaks that could cause future problems and if cylinder is fitted on couple of wood strips leaks on bottom seam would be found by doing this or if lagging had come away..

Pretty standard thing to do in dometic properties i am surprised you asked this

corgiman · 3 Mar 2008

doitall said:
nickso said:

damn, i was close that time. chris did deserve to win though

Click to expand...

One has to ask what the engineer is doing in the airing cupboard taking the lagging off.

He was there to service the boiler, or did you have a leak on the cylinder, and asked for an opinion.

So what if the punter didnt ask DIA?

The chap gave a good service

geoffo · 3 Mar 2008

namsag said:
Its called walking the system DIA where you should inspect rads valves etc for any signs of leaks that could cause future problems and if cylinder is fitted on couple of wood strips leaks on bottom seam would be found by doing this or if lagging had come away..

Pretty standard thing to do in dometic properties i am surprised you asked this

This is exactly what happened. The heating engineer said it was part of the normal service to inspect for leaks. He noticed right at the bottom of the tank (without removing the lagging) a small white furry substance which he said was evidence of pinholing. He didn't sound unduly alarmed (as the earlier posters appeared), and told me just to keep an eye on it. I now have other work in need of doing and wondered if it was worth getting this replaced/repaired at the same time. From replies, I think it would be wise to do so. Thanks

Geoff

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Pinholing in Hot Water Cylinder

namsag

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