Fernox boiler noise silencer F2 improves heat transfer efficiency. Reduces boiler noise. Compatible with all Fernox Protectors. Non-toxic, environmentally frien...

Fernox leak sealer F4 liquid is an ideal solution for reducing pressure loss from sealed systems.  Fernox Leak Sealer F4 is used throughout domestic hea...

Fernox Superconcentrate Leak Sealer F4 is used throughout domestic heating systems for sealing small inaccessible leaks. Leak Sealer F4 works best in warm/hot c...

Fernox F4 Express Leak Sealer F4 is used throughout domestic heating systems for sealing small inaccessible leaks. Quick and convenient solution which works i...

Fernox superconcentrate limescale preventer prevents build-up of limescale throughout the home. 'Bag in the tank' scale reducer. Extends the life of hou...

Fernox LS-X  External Leak Sealer and Jointing Compound. It’s a silicone paste used as an external leak sealer and jointing compound. Features ...

Hawk White is a pipe jointing compound for all general work. It is suitable for Natural Gas, non-potable water (NB: for potable water use Water Hawk), steam, ai...

Fernox 62422 F4 Express Central Heating Leak Sealer 400 ml ...