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No Nonsense Central Heating Leak Sealer 500ml (88705)

500ml. Internal leak sealer for small, inaccessible leaks and weeping joints which reduce system pressure. Effective within 24 hours. 500ml treats 100 litres.

  • 1 Year Manufacturer's Guarantee
  • Effective Within 24 Hours

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£7.99INC VAT (£15.98/Ltr)

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Rated 4.6 out of 5 by 31 reviewers.
  • 2016-09-30 T11:43:54.041-05:00
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Rated 5 out of 5 by Easy to use - does the job I used this a year ago to seal a few weeps at radiators on my central heating system. was sealed within half an hour and has held good for over a year, what more could you want? I added it via the towel radiator after checking a video online 11 Aug 2016
Rated 5 out of 5 by Brilliant liquid I'm not a plumber or an electrician or anything like that but I had a leak and this cured it. It actually only took about 15 minutes!!!!! Pressure in the system has been rock solid for almost a week. Usually had to re-charged every couple of days. 29 Jul 2016
Rated 5 out of 5 by Worked for me. My system pressure has been dropping for 9 - 12 months now. Started with maybe monthly top up required but lately down to weekly. Leak is obviously under floor, and access is very difficult. Saw this and bought it, added it to system 8 days ago and system pressure seems to be steady with no loss. Checked my accumulator tank when system partially drained, 8 psi, and system pressure now holding steady about 20 psi. Going by the other reviews I am hopeful this will be a permanent repair, and hopefully has negated the need for expensive fault finding and repair. 17 Jun 2016
Rated 3 out of 5 by value brand half price of others and probably same stuff/ pva mix? need time to tell if it works on this particular job though! 16 Jun 2016
  • 2016-09-30 T11:43:54.041-05:00
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5 Questions  4 Answers

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9 Jun 2016
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Belfast
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Answer: 
Hello GirlyDIY72,

The central heating leak sealer should be compatible with most systems.

If you in doubt please consult a qualified tradesperson for advice.

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10 Jun 2016
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Yeovil
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i have a pipe leak somewhere but unable to find it,was told about this product used by a neighbour but his boiler is an old type not a combi
4 Feb 2016
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newport
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Answer: 
Yes the product is suitable for use with combination boilers and ideal to stem the leak you describe.
6 Feb 2016
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10 Jan 2016
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Elgin
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Answer: 
Yes you can. It's a misnomer that air causes this product to catalyse like the car product Radweld; it doesn't. It works by altering the surface tension of the system water so it works by forming a soft seal in capillary leaks. Air in the system may be caused by a mechanical fault that Leak Sealer can't fix, but it represents the cheapest option that should be explored first.
10 Jan 2016
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22 Nov 2015
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sunderland
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Answer: 
No - this is not the use for which the product is intended. It will seal leaks in sealed systems and is best for capillary leaks. The toilet cistern continually changes water. You may have better success with No Nonsense External Leak Sealer to deal with your specific leak.
23 Nov 2015
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27 Sep 2015
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liverpool
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  • 2016-09-30 T11:41:40.670-05:00
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Specification
Brand No Nonsense
Manufacturer Guarantee 1 Year Manufacturer's Guarantee
Pack Size 1
Pieces in Pack/Case 1
Pieces in Pack/Case 1
Product Type Central Heating Leak Sealer
Sealant Adhesive Volume 500 ml

Downloads

Safety Data Sheet (COSHH)