Skip to content
Need Help
Screwfix Logo
Activating the button will move focus to the expanded search input field
StoresSelect a store
No items in basketCheckout
CLICK & COLLECT in as little as 1 minute
CLICK & COLLECT in as little as 1 minuteEASTER OPENING HOURS & delivery info935 STORES NATIONWIDE find your local storeDELIVERY IN AS LITTLE AS 20 MINUTES with Sprint
EASTER DEALS END 6TH APRIL. CRACK ON! SHOP NOW

People also search for...

People also search for...

Results per page:

Sentinel X100 Central Heating Scale Inhibitor 1Ltr (79683)

Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Spring Deals
Product rating 4.8 stars out of 5
Product rating 4.8 stars out of 5
 
  • 1 Year Guarantee
  • Ensures Optimum Boiler Efficiency
  • Protects against Pin-Holing
Buy 2 for £30-View Offer
£16.99Inc Vat
Check stock in your local store
Fulfilment options

Flomasta Central Heating Inhibitor 500ml (8197R)

Flomasta Central Heating Inhibitor 500ml
EnergySaving
Product rating 4.9 stars out of 5
Product rating 4.9 stars out of 5
 
  • 1 Year Guarantee
£6.99Inc Vat
Check stock in your local store
Fulfilment options

Fernox LS-X Leak Sealer 50ml (23614)

Fernox LS-X Leak Sealer 50ml
Great Value Product
Product rating 4.6 stars out of 5
Product rating 4.6 stars out of 5
 
  • 1 Year Guarantee
  • Suitable for Compression Joints & Screw Fittings
  • For External Use
£6.99Inc Vat
Check stock in your local store
Fulfilment options

Fernox F1 Protector Central Heating Inhibitor 500ml (342PP)

Fernox F1 Protector Central Heating Inhibitor 500ml
Great Value Product
Product rating 4.9 stars out of 5
Product rating 4.9 stars out of 5
 
  • 1 Year Guarantee
£20.49Inc Vat
Check stock in your local store
Fulfilment options

Sentinel X800 Central Heating System Cleaner 1Ltr (704PT)

Sentinel X800 Central Heating System Cleaner 1Ltr
Spring Deals
Product rating 4.8 stars out of 5
Product rating 4.8 stars out of 5
 
  • Treats 100 Litres
  • Not Classified Under GHS/CLP Regulations
  • Works in Cold Systems
Buy 2 for £30-View Offer
£17.99Inc Vat
Check stock in your local store
Fulfilment options

Fernox F4 Central Heating Leak Sealer 500ml (766PP)

Fernox F4 Central Heating Leak Sealer 500ml
Great Value Product
Product rating 4.8 stars out of 5
Product rating 4.8 stars out of 5
 
  • 1 Year Guarantee
  • Fixes System Pressure Loss Quickly
  • Concentrated Fast-Acting Formula
£16.98Inc Vat
Check stock in your local store
Fulfilment options

Flomasta Central Heating Inhibitor, Cleaner & Filling Kit 1Ltr 3 Pcs (1349J)

Flomasta Central Heating Inhibitor, Cleaner & Filling Kit 1Ltr 3 Pcs
EnergySaving
Product rating 4.8 stars out of 5
Product rating 4.8 stars out of 5
 
  • 1 Year Guarantee
£12.99Inc Vat
Check stock in your local store
Fulfilment options

Sentinel X400 System Restorer 1Ltr (89458)

Sentinel X400 System Restorer 1Ltr
Spring Deals
Product rating 4.7 stars out of 5
Product rating 4.7 stars out of 5
 
  • Removes Sludge & Deposits Effectively
  • Breaks Down Iron Oxide
  • Restores Heating System Efficiency
Buy 2 for £30-View Offer
£17.99Inc Vat
Check stock in your local store
Fulfilment options

Flomasta Concentrated Central Heating Inhibited Antifreeze 5Ltr (4409R)

Flomasta Concentrated Central Heating Inhibited Antifreeze 5Ltr
EnergySaving
Product rating 4.9 stars out of 5
Product rating 4.9 stars out of 5
 
  • Suitable for All Heating Types
  • Dilute at Point of Use
£37.99Inc Vat
Check stock in your local store
Fulfilment options

Flomasta Central Heating Leak Sealer 500ml (6774R)

Flomasta Central Heating Leak Sealer 500ml
EnergySaving
Product rating 4.8 stars out of 5
Product rating 4.8 stars out of 5
 
  • 1 Year Guarantee
£7.44Inc Vat
Check stock in your local store
Fulfilment options

Sentinel Internal Leak Sealer 1Ltr (99730)

Sentinel Internal Leak Sealer 1Ltr
Great Value Product
Product rating 4.6 stars out of 5
Product rating 4.6 stars out of 5
 
  • 1 Year Guarantee
£13.99Inc Vat
Check stock in your local store
Fulfilment options

Flomasta External Leak Sealer 50g (8487J)

Flomasta External Leak Sealer 50g
Great Value Product
Product rating 4.2 stars out of 5
Product rating 4.2 stars out of 5
 
  • 1 Year Guarantee
  • Ready to Use
  • Cures in 1 Hour
£6.49Inc Vat
Check stock in your local store
Fulfilment options

Flomasta Universal Filling Kit 5 Pcs (8145K)

Flomasta Universal Filling Kit 5 Pcs
Great Value Product
Product rating 4.5 stars out of 5
Product rating 4.5 stars out of 5
 
  • 1 Year Guarantee
£5.99Inc Vat
Check stock in your local store
Fulfilment options

Fernox F1 Express Central Heating Protector 400ml (625HP)

Fernox F1 Express Central Heating Protector 400ml
Great Value Product
Product rating 4.4 stars out of 5
Product rating 4.4 stars out of 5
 
  • 1 Year Guarantee
  • Non-Toxic Formulation
  • Protects Against Corrosion & Limescale
£19.99Inc Vat
Check stock in your local store
Fulfilment options

Fernox F4 Express Leak Sealer 400ml (567HP)

Fernox F4 Express Leak Sealer 400ml
Product rating 3.9 stars out of 5
Product rating 3.9 stars out of 5
 
  • 1 Year Guarantee
  • Non-Toxic Formulation
  • 100% Recyclable Can
£19.98Inc Vat
Check stock in your local store
Fulfilment options

Flomasta Central Heating Cleaner 500ml (8506R)

Flomasta Central Heating Cleaner 500ml
EnergySaving
Product rating 4.7 stars out of 5
Product rating 4.7 stars out of 5
 
  • Treats 100 Litres
  • Not Classified Under GHS/CLP Regulations
£5.98Inc Vat
Check stock in your local store
Fulfilment options

Sentinel X200 Boiler Noise Reducer 1Ltr (43140)

Sentinel X200 Boiler Noise Reducer 1Ltr
EnergySaving
Product rating 4.8 stars out of 5
Product rating 4.8 stars out of 5
 
  • Suitable for All Boiler Types
  • Restores Boiler Efficiency
  • Eliminates Kettling
£13.49Inc Vat
Check stock in your local store
Fulfilment options

Fernox F3 Central Heating Cleaner 500ml (757PP)

Fernox F3 Central Heating Cleaner 500ml
Great Value Product
Product rating 4.5 stars out of 5
Product rating 4.5 stars out of 5
 
  • Treats 130 Litres
  • Neutral pH
  • Non-Hazardous & Non-Foaming
£19.53Inc Vat
Check stock in your local store
Fulfilment options

Flomasta Central Heating Inhibitor 310ml (4792R)

Flomasta Central Heating Inhibitor 310ml
EnergySaving
Product rating 4.4 stars out of 5
Product rating 4.4 stars out of 5
 
  • 1 Year Guarantee
£9.99Inc Vat
Check stock in your local store
Fulfilment options

Sentinel LS Rapid Dose Leak Sealer & Adaptor 300ml (7013V)

Sentinel LS Rapid Dose Leak Sealer & Adaptor 300ml
Great Value Product
Product rating 4.9 stars out of 5
Product rating 4.9 stars out of 5
 
  • 1 Year Guarantee
£21.99Inc Vat
Check stock in your local store
Fulfilment options
Results per page: