Skip to content
Need Help
Sign in / Register
Show prices excluding VAT
INC VAT
EX VAT
Browse
Search
Activating the button will move focus to the expanded search input field
Search
Stores
Select a store
Checkout
DEPARTMENTS
Tools
Heating & Plumbing
Electrical & Lighting
Bathrooms & Kitchens
Outdoor & Gardening
Screws, Nails & Fixings
Security & Ironmongery
Building & Doors
Safety & Workwear
Sealants & Adhesives
Storage & Ladders
Auto & Cleaning
Painting & Decorating
CLICK & COLLECT
in as little as 1 minute
CLICK & COLLECT
in as little as 1 minute
NEXT DAY DELIVERY AVAILABLE
7 days per week
886 Stores Nationwide
find your local store
60 Minute Delivery
with Sprint
SHOP OUR LATEST OFFERS
Back to
Home
<
Back to
Heating & Plumbing
<
Back to
Central Heating
<
Back to
Central Heating Treatments
<
[...]
Heating & Plumbing
Central Heating
Central Heating Treatments
<
Back to
Central Heating Leak Sealers
Sort By:
Top Sellers
Price - High to Low
Price - Low to High
Product Brand - A to Z
Product Brand - Z to A
Average Star Rating
Fernox F4 Central Heating Leak Sealer 500ml
(766PP)
Product rating 4.7 stars out of 5
Product rating 4.7 stars out of 5
(27)
compare
1 Year Guarantee
Fixes System Pressure Loss Quickly
Concentrated Fast-Acting Formula
Product Quantity
Save
-
10%
£14.29
Inc Vat
Was
£15.99
Click & Collect
Delivery
Flomasta Central Heating Leak Sealer 500ml
(6774R)
Product rating 4.8 stars out of 5
Product rating 4.8 stars out of 5
(58)
compare
1 Year Guarantee
Product Quantity
£9.47
Inc Vat
Click & Collect
Delivery
Sort By:
Top Sellers
Price - High to Low
Price - Low to High
Product Brand - A to Z
Product Brand - Z to A
Average Star Rating