Fernox 58232 Leak Sealer

Had a slow leak in my 10 radiator combi central heating. Used the Fernox leak sealer as instructed and ran the heating system on low heat for two hours. It corrected the leak and several weeks later pressure is still maintained. This is an excellent product and to be recommended.

Great stuff very easy to use

I have a pressurised combi boiler system working under very low pressure as we do have a leak issue and my plumber recommended I used this product. So, after watching their "how easy it is to use video" I went ahead and bought it. According to the video it should only take a matter of a few minutes to use.So, I attached the product exactly as per the video, pulled the trigger and about 5 seconds later the black plastic tube attached to the trigger shot off and I was covered in water and F4.

Works fine, however part of the nozzle snapped when administering the product.

It was like a Chinese puzzle trying to interpret the application instructions, A sequence of pictures are alright if you have 20/20 vision, but at the age of 85, my vision is like a lot of other parts of my anatomy, wearing out by the day. I found better instructions on the supplier's website, and after wiping a large amount of the substance off the bedroom wall. I finally got it sorted. I think it has done what it says on the tin and it's great to have the central heating ticking over nicely again. Just one small gripe - I think three weeks delivery for such a small package is a bit much.

Didn't stop the loss of pressure but was easy to use

This is a brilliant solution for small leaks. Is saved me a lot of money and hassle with a small leak from radiator.

Did the job and eliminated pipes leaking so we knew the problem was in the boiler