Excellent product, not the cheaper but the best on the market.
I had to top up my boiler every few days. I add half of the sealer into my system and since to be fine.
It's early days, but I added this sealer to my central heating system a week ago and the pressure has been steady ever since. The system was losing about 0.1 bar a day prior to that and required topping up every 7-10 days. I was aware of one minor leak, but I suspect there was another hidden leak somewhere in the system, as it seemed I was adding more water than I was collecting from the minor leak. It's probably not a permanent solution, but I'll be happy if it works until the spring when I can switch the heating off and make a proper repair.
Fixed the issue. Always best using a good brand...
Sentinel is the industry leader for central heating additives
Unfortunately it doesnt work and didnt help to stop or reduce any leak.
Its sorted my boiler pressure leak as i was having to top it up every week now it happy days.
I maybe shouldn't, but with plastic pushfit pipe for some radiator tails find that they ocasionally weep a little. This stuff puts a stop to that within hours.
Did the job to seal very small leaks on radiator valve stems
Excellent product does what it says on the tin, easy to use.
I bought this in an effort to fix a pinhole leak in a new radiator and it did the job perfectly in only a few hours.
Had a leak under the floor somewhere for years I was having to top the system up everyday to keep the pressure up. One bottle of this stopped me having to do this I couldn’t believe it was that good. Excellent result so pleased !
Works a treat, I just followed the instructions and all is well with my central heating once more.
Worked better than expected and has saved an expensive repair!
Excellent product, sorted out the leak, very pleased
Used to fix a small leak somewhere in my system. Had to bleed my top of the system towel rail once a week, which made me think I had a small leak. This has now stopped
Had a client with an underfloor heating leak , this resolved the issue instantly, and saved the customer a costly lifting up and disruption of expensive flooring.
Good quality stuff, too early to say if does the job but have used before to positive results
I have used this product a couple of times and it works well.
Does what it says. Had a very minor leak on a central heating fitting. Put this stuff in the system, leak stopped after about 30-40 minutes.
