Fernox Water Hawk Jointing Compound.
Fernox Water Hawk Jointing Compound gives plumbers, heating engineers and installers a dependable way to seal threaded pipe joints. Its high-quality, non-hardening formula creates strong, long-lasting seals while allowing joints to remain easy to dismantle during future maintenance.
Whether you’re installing a new central heating system, repairing pipework or fitting an underfloor heating manifold, this trusted pipe jointing compound helps you complete the job with confidence. It spreads smoothly across threaded fittings, making application quick, clean and straightforward.
Unlike hard-setting alternatives, Fernox Water Hawk Jointing Compound stays flexible after installation. As a result, you can adjust fittings during assembly without damaging the seal. This flexibility also makes servicing much easier if you need to remove components later.
The compound works with hot and cold water systems and suits many plumbing and heating applications. You can also use it alongside traditional hemp or approved jointing fibres to create an even stronger seal where required.
Professional installers choose Fernox because of its reputation for producing reliable plumbing and heating products. Water Hawk Jointing Compound continues that tradition by delivering consistent sealing performance across domestic and commercial installations.
If you need a trusted pipe jointing compound that combines ease of use, durability and long-term reliability, Fernox Water Hawk Jointing Compound offers an excellent solution.
 Key Features
- WRAS – Approved Product
- Premium non-hardening pipe jointing compound
- Creates reliable leak-free threaded pipe seals
- Easy to apply smooth consistency
- Suitable for plumbing and central heating systems
- Can be used with hemp or approved jointing fibres
- Allows joints to be adjusted after assembly
- Suitable for hot and cold water applications
- Ideal for professional plumbers and heating engineers
- Manufactured by trusted heating specialist Fernox
- Helps simplify future maintenance and disassembly
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Fernox |
| Product | Water Hawk Jointing Compound |
| Weight | 400g |
| Type | Non-hardening jointing compound |
| Suitable For | Threaded metal pipe joints |
| Compatible Systems | Plumbing, central heating, hot & cold water, underfloor heating, gas installations (where applicable regulations permit) |
| Application | Professional & DIY use |
| Colour | Brown |
When Should I Use Fernox Water Hawk Jointing Compound?
Choose Fernox Water Hawk Jointing Compound whenever you need to seal threaded pipe fittings securely. It works well on central heating systems, domestic plumbing, radiator valves, isolation valves and underfloor heating pipework.
The non-hardening formula makes it an excellent option for installations that may require future servicing. Because the compound stays flexible, you can dismantle joints more easily without damaging the threads.
For the best results, apply the compound evenly to clean threads and use it with hemp or another approved jointing fibre where recommended.
Compatible Products
For a complete installation, consider pairing this product with:
- PTFE Thread Seal Tape
- Brass Compression Fittings
- Isolation Valves
- Stainless Steel Underfloor Heating Manifolds
- Fernox F1 Protector
- Fernox F3 Cleaner
- Fernox LS-X External Leak Sealer
- Fernox Hawk White Jointing Compound
Frequently Asked Questions
What is Fernox Water Hawk Jointing Compound used for?
Fernox Water Hawk Jointing Compound is used to seal threaded pipe joints in plumbing, heating and water systems. It helps create reliable, leak-free connections while allowing joints to be dismantled more easily during future maintenance.
Can Fernox Water Hawk Jointing Compound be used on central heating systems?
Yes. It is suitable for use on central heating systems, hot and cold water installations and many other plumbing applications. Always ensure it is used in accordance with the manufacturer’s instructions and any applicable regulations.
Does Fernox Water Hawk Jointing Compound harden after application?
No. It remains non-hardening, allowing threaded fittings to be adjusted during installation and dismantled more easily when servicing or repairs are required.
Can I use Fernox Water Hawk Jointing Compound with hemp?
Yes. Fernox Water Hawk Jointing Compound is commonly used alongside hemp or other approved jointing fibres to create durable, reliable threaded pipe seals.
Is Fernox Water Hawk Jointing Compound suitable for underfloor heating?
Yes. It can be used on threaded fittings within underfloor heating systems, including manifold connections and associated plumbing, where an effective threaded seal is required.
Why Choose Fernox Water Hawk Jointing Compound?
Choosing the correct jointing compound helps ensure your plumbing or heating system remains leak-free for years to come. Fernox Water Hawk Jointing Compound has been developed to provide reliable sealing performance while remaining easy to apply and simple to dismantle when servicing is required.
Whether you’re completing a new installation or repairing an existing system, its professional-grade formulation helps reduce installation time and gives you confidence that threaded joints are securely sealed. Combined with Fernox’s reputation for quality heating and plumbing products, it’s a dependable choice for both domestic and commercial projects.
Next Working Day Delivery: Yes, we hold all our products in stock at our 7000 sq ft Nottingham warehouse and at our 3000 sq ft warehouse in Market Harborough and use DPD for a tracked next-day delivery.
Collection Available: You can always collect from our Nottingham location and help yourself to a free tea and coffee.
