Add to trolley for...

- Change your branch

Check stock in your local branch

Free Saturday Delivery on orders over £75

Product Details

Cures small leaks from joints that are difficult to locate. Dosage 1L to treat 100L system.

Technical Specification
Manufacture ID ELS1
Safety Data Sheet click here
Volume (L) 1
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm £5 Free
Turbo usually Next Business Day before 12 noon £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 9pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Central Heating Leak Sealer 1L is rated 4.6 out of 5 by 18.
Rated 1 out of 5 by from Pretty poor Had to redo with fernox f40
Date published: 2020-02-05
Rated 5 out of 5 by from Good Product Very good product works well and did solve the problem
Date published: 2019-11-30
Rated 5 out of 5 by from It works !/2 bar leak over 4 days. nothing visible at boiler or rads. Tried this in a 9 rad house. After a week pressure hasn't dropped. Success. One bottle was enough.
Date published: 2019-09-18
Rated 5 out of 5 by from Heating leak seal 1ltr Price ok looks ok can’t be that bad when 5star by plumbers
Date published: 2019-09-14
Rated 5 out of 5 by from Saved a Fortune My Boiler was leaking where the inlet pipe screws into the Heat exchanger at the back of the boiler so that the nut cannot be accessed without a complete strip down. I drained the loft tank plus an extra 10 litres and then using a funnel poured 2litres of Qual Rad directly into the the pipe work and refilled.After a few hours the leak had sealed which must have saved me hundreds of pounds or even a new boiler.
Date published: 2019-05-14
Rated 5 out of 5 by from Pressure Loss Had a slow pressure loss over a number of months, unable to pinpoint leak, during a rad change dropped tub contents in via open pipe, weeks later no pressure loss.
Date published: 2019-04-28
Rated 5 out of 5 by from Excellent Very good and done the job
Date published: 2019-03-04
Rated 5 out of 5 by from Does what it says on the label We used this on the central heating system as some radiators had been added in our extension. There appeared to be a consistent loss of pressure so we suspected a minor leak. Popped this liquid in which was easy to do and now the system works fine. Would buy again
Date published: 2019-02-23
  • y_2020, m_2, d_18, h_12
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.5
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_18
  • loc_en_GB, sid_91364, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_toolstation-gb
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getContent, 10.33ms

You might also like

This site uses cookies to store information on your computer. Some of these cookies are essential to make the site work and others help us to improve services by giving us some insight into how the site is used. You can view our cookies policy here.