Bondaglass G4 Pond Paint Black

5 reviews

Extremely popular with Swell UK pond keepers, Bondaglass G4 Pond Paint (Black) helps seal your pond basin using non-porous paint, keeping your pond water just where you need it!


  • G4 Black 1kg 10% OFF With Code
    code: BON12112 In Stock (Only 2 left!)
  • G4 Black 2.5kg 10% OFF With Code
    code: BON12114 In Stock (Only 3 left!)
  • G4 Black 5kg 10% OFF With Code
    code: BON12116 Out of stock (
    More stock due in 2 days

Product Information

Bondaglass G4 Pond Paint is ideal for waterproofing your pond. It is a moisture cured polyurethane which forms a non-porous seal. It is perfect for waterproofing ponds made from rendered brick.

G4 Pond Paint uses the moisture in the air and substrate to cure and harden.

When using the black paint, the first two coats must be G4 clear. This is because the G4 clear provides the maximum non porous seal and adhesion. A further two coats of G4 black can now be added.

If you have a cracked pond, then the crack must be filled before the G4 can be used to waterproof it.

Key Features:

  • Polyurethane paint forms a non porous seal
  • Suitable for ponds made from rendered brick
  • Hardens in the air
  • First use clear G4 then coloured G4
  • One can (1kg) is 1 litre


1st and 2nd coats = clear 410g / metre sq.(for 2 coats)

3rd and 4th coats = black 400g / metre sq. (for 2 coats)

To work out how much you need, use our Pond Paint Calculator.

Latest Customer Reviews

  • Rating
    Date 02/05/2021 17:05pm
    Bondaglass G4 Black 5kg
    Feefo Logo
    If I had the product I could give a review. Who knows when I will get it!
  • Rating
    Date 01/05/2021 06:05am
    Bondaglass G4 Black 2.5kg
    Feefo Logo
    Great way to seal your concrete pond, does what it says on the tin. Need to be careful using it as need Gloves, eye protection and mask to avoid fumes. Must allow all day to give several coats as must be done within 4 hours of each other which caught me out. Follow those instructions and it will be a great way to avoid an pond liner with folds in it. Recommended
  • Rating
    Date 14/09/2020 02:09am
    Bondaglass G4 Black 2.5kg
    Feefo Logo
    These products are fantastic this is my third pond I've built using G4 pond paint.
  • Rating
    Date 26/04/2020 11:04am
    Bondaglass G4 Black 1kg
    Feefo Logo
    Does as what it says,quick and easy
  • Rating
    Date 16/07/2019 07:07am
    Bondaglass G4 Black 1kg
    Feefo Logo
    Have used G4 plenty of times in the past and is usually a great product. This sample was rubbish. Almost too thick to get out of the tin. Impossible to paint on properly. One bad coat applied to a veg filter and the remaining half a tin left to be thrown away at some later date.