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Fernox Powerflow Flux 100g

4.9 (35 reviews)
SKU: 260223155525657 EAN: 5016009190302

Compare 5 prices for Fernox Powerflow Flux 100g — from £8.99 to £16.95 across 5 UK sellers including Toolstation, Travis Perkins, B & Q and more. Save up to £7.96 (47%).

£8.99 9h ago
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Compare Prices from 5 Sellers

Prices updated 13 Apr 2026
2
Travis Perkins
£13.20 +£4.21
11h
3
B & Q
£14.53 +£5.54
5h
4
Tooled Up
£16.95 +£7.96
11h
5
My Tool Shed
£16.95 +£7.96
11h
#2 Travis Perkins
11h ago
£13.20 +£4.21
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#3 B & Q
5h ago
£14.53 +£5.54
View
#4 Tooled Up
11h ago
£16.95 +£7.96
View
#5 My Tool Shed
11h ago
£16.95 +£7.96
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Fernox Powerflow flux is a soft paste applied to joints prior to soldering. Contains no zinc chloride which reduces corrosion concerns Suitable for both lead containing and lead free solder alloys Self cleaning Easy to apply WRAS approved
No specifications available
No features listed
No items listed

Customer Reviews 35

4.9
35 reviews
5 star
32
4 star
2
3 star
1
2 star
0
1 star
0
The best
5.0
February 17, 2026
Cyclemaster Verified Purchase

I’ve used this for years and it works really well without any problems

Good Performing Flux
5.0
May 11, 2025
Neuromancer Verified Purchase

Best flux I’ve used for a while though not the cheapest you do get consistent results.

Self cleaning flux
5.0
May 1, 2025
Johnathan pendragon Verified Purchase

Needed a self cleaning flux to solder onto old copper pipwork , unable to clean prperly. Worked fine

Great for lead free solder
5.0
December 3, 2024
Alfies mate Verified Purchase

Always great for lead free solder a little expensive but does the job

Best flux to use.
5.0
November 3, 2024
And 125 Verified Purchase

This flux is probably the best there is. I had bought some of the white paste from another outlet but it was absolute rubbish. The staff at Toolstation in Elgin were incredibly helpful as always.
I would highly recommend this product.

Excellent Flux in
5.0
September 11, 2024
Martindf3 Verified Purchase

Love this flux and it helps solder lots of different materials like steel and rechargeable batteries I have been using wick flux which is inferior to this when I ran out .

Flux 100g
5.0
August 27, 2024
TRBrook Verified Purchase

Excellent stuff to use as I've used it many times in the past.

Works as it should. No issues. Another good product from Toolstation
5.0
May 19, 2024
kingabunyip Verified Purchase

Works as it should. No issues. Another good product from Toolstation

First class
5.0
April 10, 2024
Dialot Verified Purchase

Always use this never had a problem with it great stuff

Good quality flux
5.0
November 26, 2023
The Real Adrian Verified Purchase

This flux worked pretty well, leaving minimal residue which easily wipes off. Just use the minimum gas flame to melt the solder. Too much and the flux burns off.

The orginal
5.0
November 25, 2023
Jamal Mustafa Verified Purchase

The original and always the best/go-to brand. Never skimp on flux!

Great service as usual
5.0
August 26, 2023
PDEntwistle Verified Purchase

Excellent product at a good price with great service

Easy to use
4.0
August 3, 2023
MumFixesStuff Verified Purchase

Easy to use for home repairs on daughters playjewellery. Much better than the stuff we tried first.

Good
5.0
July 27, 2023
D Chalmers All Trades Verified Purchase

This product was very good and came at a reasonable price.

Good flux
5.0
April 28, 2023
Part time Plumb er Verified Purchase

Good quality high temperature flux. White paste disolves under heat to take solder.

Does the job, nothing else to add
5.0
April 24, 2023
Julesnickname Verified Purchase

Does the job, good well established flux so the rest of this text is just filler to meet the 50 characters!

Great Flux
5.0
April 13, 2023
Jafferolli Verified Purchase

I have used this flux for years. Brilliant stuff, cleans the copper as soon as its applied, and lets the solder run freely creating water tight joints every time. Highly recommended.

Flux
4.0
March 16, 2023
DazzaB Verified Purchase

Does what it should, shame there is no brush with it.

Flux for Lead free solder
5.0
December 26, 2022
Place hero Verified Purchase

Needed a replacement tub of this flux & checked on line availability & ordered for click & collect

5.0
December 10, 2022
Bogger Verified Purchase
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