Elastomer Bitumen Sealing Material

Mastic 244 
Mastic 244 

Cat. No. 244

Mastistop is a plastic bituminous compound made from high-quality bitumen, additives as required to preserve the plastic properties of the product, fibrous fillers and carbolic solvents. The product is easiest to apply when cold.

Mastistop contains unique ingredients which make it bond well on wet surface even when it rains, and water-proof.


MASTIC 244 is used for sealing cracks, seams and floor-wall contact points, vertical walls (of concrete, asbestos or metal). In addition, “Mastic 244” can be used to finish bitumen sheet works in hard to reach areas.

Technical Specifications





Shiny black paste

Specific weight:

1.06 kg.


Paste material

Solid contents (%):

66 min.

Heat resistance at 100°c

Material doesn’t slip or liquify

Cold flexibility at -10°c

Material doesn’t crack

Stagnant water resistance  

When sunk in glass net material withstood stagnant water exposure without affecting its properties.

Elongation at break:




Climatic resistance:

Very good.




a. Seal cracks:

  1. Enlarge crack to 1.5 cm in wide and 1 cm depth.
  2. clean crack surface well.
  3. coat crack with “Primer 106”. Wait 1-2 hours until dry.
  4. fill crack with Mastic 244.

b. Vertical and slanted sealed surface patch work:

  1. Clean surface well.
  2. place “Primer 106” on desired area at a quantity of 300 gr/m².
  3. wait until dry. Coat with Mastic 244 at a minimum thickness of 3 mm.

c. Sealing completion for bitumen sheets:

  1. Clean surface well of all dirt, dust and debris.
  2. Heat sheets before bitumen treatment to remove all undesored coating like polyethylene and talc.
  3. Coat sheet with Mastic 244 at a thickness of 5 mm minimum. Coat surface 8 cm from each side of the seam line of the two adjoining sheets.


Due to application.

Drying time

Contact dry time – 24 hours.

Final dry time – one week.


18 Lit., 4.5 Lit.

Safety regulations

  • This product contains flammable solvents, only use it in well ventilated areas. Use personal protective gear.
  • Avoid contact with hot surfaces, parks, flames.
  • Avoid contact with skin, eyes.
  • If swallowed do not induce vomiting and get prompt medical attention.
  • Static discharge can cause fire.
  • Empty containers retain product residues that can be dangerous and should be disposed properly. 


All materials are not available for all countries. 

Contact your dealer about the availability.