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Fernox Water Hawk Jointing Compound 200g

4.7 (210 reviews)
SKU: 260223155536715 EAN: 5014551103672

Compare 1 price for Fernox Water Hawk Jointing Compound 200g — from £6.19 across 1 UK seller including Toolstation.

£6.19 12h ago
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Customer Reviews 210

4.7
210 reviews
5 star
175
4 star
24
3 star
5
2 star
3
1 star
3
Does the job
4.0
February 20, 2026
Hammonddiy Verified Purchase

A bit thick and messy to apply but does the job as intended. Be nice if it came with an application brush.

Seems ok
5.0
February 18, 2026
Fff Verified Purchase

Seems to do the job, replacing radiators and had to reroute some pipe worry, no leaks yet.

Great product
5.0
February 14, 2026
DIYr man Verified Purchase

Bought the non potable version first so had to return and replace with this one. Feels like a great secure fit when things are tightened

Good value
5.0
February 5, 2026
Bogusbaz Verified Purchase

Small tub of gooey sticky plumbing gloop that works exactly as it should, sealing up joints and compression fixings...I know you shouldn't need it but belt and braces

Too dry
1.0
January 26, 2026
MLD70 Verified Purchase

It comes in metal container and is very dry; it attach to my fingers but not much to copper

Does the job...hopefully, but in a tin and not a plastic tub as shown.
3.0
December 21, 2025
e77a203d-1f4d-566b-9c47-db031d6a7211 Verified Purchase

Needed a potable water compound with a reputable name

Potable Jointing compound for use on fittings
5.0
December 16, 2025
Dave123456789 Verified Purchase

Easy to apply and smooth, works really well nothing more to add

No leaks!
5.0
December 6, 2025
readyEddy55 Verified Purchase

first time using, could do with a brush but none the less I had no leaks, which we all like

Easy to Use, And works well!
5.0
December 2, 2025
Cablemonkuk Verified Purchase

Im a Home DIY plumber and never used this product before, but works well and easy to apply, will definitely use again

Leak problem solve
5.0
October 11, 2025
Donis Verified Purchase

Great product. Problem solve, no more leaks. Easy to use

No leaking boiler here
5.0
October 8, 2025
Snake pliskin fido beddos Verified Purchase

Works well on compression joints and blanking plates

Great thread sealant
5.0
October 5, 2025
DIY did 1 bother Verified Purchase

Perfect. Sealed a stubborn leaking radiator spigot after trying various methods. Throw away the ptfe tape.

Does the job
5.0
September 12, 2025
Immortal builder Verified Purchase

Does what it says on the tin Seals compression joints

Sealed radiator tap tail threads
5.0
September 10, 2025
DIY876 Verified Purchase

Easy to use and sealed radiator tap tail threads well. Easier to use than PTFE tape.

Good plumbing leak sealant
5.0
August 16, 2025
Sappyjay Verified Purchase

Worked perfectly to seal a leaky olive joint, was a little difficult to apply to my job but worked nonetheless

Excellent...,.,..,...................................
5.0
July 29, 2025
Jonnie so to Verified Purchase

Excellent..............................................

Good product
5.0
June 26, 2025
4c4d51b6-7236-5e2f-b96c-91170ab0e79d Verified Purchase

Done the job, placed some on the olives after getting a radiator replaced following some decoration work. Seems to have done the job, no leaks.

Works well
5.0
June 21, 2025
f4729c24-db3b-5af9-9e9f-7bfb44aad9c3 Verified Purchase

Compound works well. Collection great. Staff friendly.

SLIGHT LEAK ON COMPRESSION JOINT
5.0
June 16, 2025
c08f071f-b7c7-5cf5-aafd-2f7da94dda89 Verified Purchase

Compression joint on outside tap had a slight leak, read the reviews thought I would try this result been so far so good . Let’s hope it remains so.

More effective than PTFE tape.
5.0
June 7, 2025
Onyerbikeuk Verified Purchase

Stops that leaking joint that drips no matter how much PTFE tape you put on it.

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