Everbuild P11 Central Heating System Cleaner Remove Flux Residues 1LTR

Code: 365629
  • £6.95
  • (FREE UK Delivery)
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  • EVERBUILD P11 SYSTEM CLEANSER will remove commissioning and flux residues from new systems and restore circulation to old systems which suffer from sludge. P11 System cleanser should also be used when components are replaced or existing systems are extended


Compatible with plastic tanks, micro bore and all metals (including aluminium) used in central heating systems.

Economical-“ 1ltr will treat a 100ltr system capacity.

Areas for Use

New and existing central heating systems.

Extensions to existing systems.

Remedial cleansing when components are replaced.



Use only as directed.

Only suitable for fully indirect systems.

Not suitable for use in PRIMATIC single feed cylinders.

Use in conjunction with P14 system inhibitor for ongoing protection after the flush.



Use P11 system cleanser in accordance with BS7593:1996

Turn off boiler, mains water and drain down.

Locate the central heating feed and expansion tank.

Shake the bottle and poor the entire contents into the tank.

Turn on mains, refill the system and restart the boiler pump. Bleed all radiators.

Circulate under normal operation for :

Fast Cleanse (New components) 2 Hours (HOT)

New System 2 Weeks

Previously treated 3 weeks

Old system 4 weeks

After the recommended period, repeat from step 1 but add P14 system inhibitor at step 3 then continue with step 4 which completed the operation.

Alternatively P11 can be added via a partially drained radiator. It is still necessary to drain and refill after the recommended period in step 5.


Health & Safety

Consult COSHH data sheet for full list of hazards.



Store in original container away from frost in a dry area.



1ltr treats 100ltr system capacity


Shelf Life

36 months in original unopened containers.

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