Top positive review
2 people found this helpful
Used through magnaclean
on 4 December 2014
My system was losing pressure over the space of 1-2 weeks, and required topping up. I couldn't see an area where it was leaking so got this.
Used with a combi boiler + Magnaclean filter.
Turn off boiler,
Close the feed and return of the magnaclean filter,
Remove the lid, and clean the filter while you're at it,
Look at how much water is left in the magnaclean container,
use a cloth to remove the water from the magnaclean container,
fill it with the leak sealer to the same amount,
refit it, and turn the valves back on,
Bleed the magnaclean.
You cannot use the whole 1L in this method, however the leak sealer can be used for up to 10 rads, so for a normal house you'll have ~7 rads, so hopefully just about enough to make it as effective as it should be. If you want to add the whole thing though, just repeat the steps as soon as you've opened the valves (and run the boiler for a few seconds, don't get it hot though).