Record Breaking Strongest Adhesive & Sealant

Adiseal adhesive & sealant destroyed the competition in an independent test. It was over 3 times stronger than the nearest competitor. Even the SCREWS STARTED RIPPING OUT in the test.

Black Sealant

(Last Updated On: 12 January 2023)

Black Sealant

Which black sealant?

Adiseal is a high performance black sealant and adhesive. It outperforms other black sealants on the market. We will look at what are the benefits of using Adiseal black sealant adhesive compared to other products.

Demonstration of applying black sealant on wet brick.
Applying black sealant adhesive on wet brick.

Benefits of Adiseal Black Sealant Adhesive

The standard adhesive drying time for Adiseal is 24 – 48 hours to fully cure. Curing times can increase in colder temperatures.

Details of benefits

Works in dry, wet & underwater

Adiseal works in the dry, wet & even underwater. This is especially handy when there is a need to seal immediately like a leaking gutter. Most other products require a dry surface to apply meaning they are not suitable for emergency repairs.

Demonstration of sealing underwater with wet sealant.
Demonstration of sealing underwater.



Adiseal is also a black waterproof sealant. This allows Adiseal to be used where other sealants will not work. It also allows testing of a seal as soon as it is applied which can’t be done with other sealants. Adiseal can also be used as a black sealant for cars.

Video of waterproof sealant sealing underwater.

Resists mould

In our test Adiseal has the strongest mould resistance of the products tested. We tested the white coloured sealant so that any mould growth could be clearly seen.

Anti mould sealant & mould resistant sealant comparison vs *** sealant and adhesive. Adiseal has stronger mould resistance than *** sealant and adhesive.
Mould resistance sealant comparison vs popular competitor.

Over Paintable

Adiseal is available in the following colours: white, black, grey, brown & ultra clear. It can be manufactured in any RAL colour. It is also over paintable with most paints. For solvent & oil based paints, compatibility testing is required. Sanding the surface slightly can help the paint adhere better. Waiting until Adiseal has fully cured is recommended before painting over it. Adiseal can take 48 hours for it to fully cure.

Tip – Own paint colour can be mixed into Adiseal Ultra Clear to make an adhesive & sealant match the exact colour required. Use a piping bag, tube or cartridge to apply the custom coloured Adiseal.


Virtually Odourless

Adiseal does not have that harsh solvent smell like other sealants. This is because Adiseal is solvent and isocyanate free. To be able to use other products require good ventilation but this is not an issue for Adiseal.


Solvent Free

Adiseal black sealant adhesive is solvent free. This make it safer for use on sensitive materials that can be damaged by solvents. Polystyrene is an example that solvents can attack. Polystyrene is sometimes used inside bath panels which black bath sealants based on solvents can attack. This is not a problem for Adiseal, making it ideal for use in applications like a black bath sealant.


No Shrinkage or Cracking

Another problem of solvent based black sealants is they can shrink whilst they are drying. This will make a weaker seal as the seal pulls away from the surface as it shrinks. Solvent based products can be cheaper to manufacture but this means there is less active product inside the tube.


EC1 Plus certified

Adiseal has the lowest VOC and is certified EC1 Plus.


Black kitchen sealant

Adiseal is ISEGA certified meaning it is suitable for use in food preparation areas. Adiseal is the ideal black kitchen sealant as it’s certified safe for use in food preparation areas.


Interior & exterior use

Adiseal is suitable for both interior and exterior use. It is very versatile and outperforms dedicated products. It will work equally well as a black worktop sealant as well as a roof sealant.

Where to buy Adiseal black sealant adhesive?

In the UK, Adiseal products can be bought from stockists. For other countries, our products can be bought from www.guglue.com

Other colours

Adiseal is also available in the following colours:

Frequently asked questions about black sealant

How to remove black sealant?

To remove black sealant, varies on what type of product it is. Most silicone sealants are solvent based. For solvent based products, Adisolve can be used to deactivate the product. Spraying Adisolve on top of the product will help the silicone peel away from the material it is stuck to. Use a sharp item then to cut away any sealant that remains stuck to the surface.

How to apply black sealant?

To apply black sealant requires a clean surface first. If there is any existing sealant, this will require removing before applying the new sealant. Adisolve will help remove old sealant that is solvent based. Old sealant can also be removed using a sharp item like a knife.
Once the surface is clean, apply the sealant on top. Pushing the sealant into the gap will provide a better seal. Smooth the sealant then allow the product to dry. Some people apply tape on the sides to get a good clean finish on the sealant.

What is the best black sealant adhesive?

Adiseal is the best black sealant. Adiseal works in the dry, damp, wet and even underwater. It seals instantly even in the rain. It is UV resistant and has many other benefits.