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Central heating small leak


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Hi

 

 Thank you for reading , we have seem to have developed a very small pin hole leek in one of our domestic radiators ...I have found "FLOMASTA 0647 CENTRAL HEATING LEAK SEALER" 

 

Am wondering if this is ok to try or will there be any issues when it mixes with the blue antifreeze.

 

looking for some help / advise please

 

Thank you 

 

Andy 

 

 

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When I had a leak I just double dosed with Radweld Plus

https://www.holtsauto.com/holts/products/radweld-plus/

 it mixes fine with Blue antifreeze as it's designed for cars. It hasn't affected my Eberspacher and the system is still running 6 years later, I've changed the antifreeze since then and so far no leaks😱

Edited by Loddon
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38 minutes ago, Loddon said:

When I had a leak I just double dosed with Radweld Plus

https://www.holtsauto.com/holts/products/radweld-plus/

 it mixes fine with Blue antifreeze as it's designed for cars. It hasn't affected my Eberspacher and the system is still running 6 years later, I've changed the antifreeze since then and so far no leaks😱

That's the stuff  thank you.

 

Just as an idea how many radiators / How big are they just as an idea ?

 

If it doesn't work back to new Rads..... Nothing lost etc 

 

Thank You 

 

Andy

 

 

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I had the same problem. Replaced rad about £40 for new rad from screwfix. Takes about 30 mins. Drain down the rad first and save the fluid to add back to the top tank. It’s much easier than faffing about trying to fix it. Even I managed it. 

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System comprises of

1 calorifier

2 of 500x500 single rads

3 of 900x200 single rads

Plus about 50 metres of 22mm copper pipe feeding it all

The 900x200 are not normal rads they are quite thick so hold a fair amount.

 

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You don’t have to drain the whole system. Just drain the rad. You can isolate it using the valves each end. 

Just now, Loddon said:

System comprises of

1 calorifier

2 of 500x500 single rads

3 of 900x200 single rads

Plus about 50 metres of 22mm copper pipe feeding it all

The 900x200 are not normal rads they are quite thick so hold a fair amount.

 

 

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27 minutes ago, Balloon said:

You don’t have to drain the whole system. Just drain the rad. You can isolate it using the valves each end. 

 

I am fully aware of how to do that,  however you still have to drain the rad and if you cant get a bowl under the valve to catch the liquid  it is easier just to use the drain points. In my case  the heater was away being serviced so I had to part  drain the system anyway, plus it was time for an antifreeze  change.

When replacing the rads in my house I did exactly the same and drained the whole system  as I had no idea how old the inhibitor was in the system and wanted to add fresh.

 

 

Edited by Loddon
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Just now, Loddon said:

I am fully aware of how to do that,  however you still have to drain the rad and if you cant get a bowl under the valve to catch the liquid  it is easier just to use the drain points. In my case  the heater away being serviced so I had to part  drain the system anyway, plus it was time for an antifreeze  change.

When replacing the rads in my house I did exactly the same and drained the whole system  as I had no idea how old the inhibitor was in the system and wanted to add fresh.

 

 

Fair enough. I used a plant saucer to get the clearance. 

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14 hours ago, Loddon said:

System comprises of

1 calorifier

2 of 500x500 single rads

3 of 900x200 single rads

Plus about 50 metres of 22mm copper pipe feeding it all

The 900x200 are not normal rads they are quite thick so hold a fair amount.

 

Thank you..... 

 

Will try what you did .... Mine is a Webesto Thermotop Boiler.

 

So similar to yours I guess.... Just wondering about it working now as not a "true" pressurised system 

 

Thank you 

 

Andy

 

 

 

 

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