weber jointseal PU MC

Product formerly named: formerly Jointseal.PU MC


One-component polyurethane sealant and adhesive weber jointseal PU MC is a reliable high modulus polyurethane based elastomeric sealant suitable for jointing and high performance bonding. It cures under the effect of atmospheric humidity to form a flexible and resistant joint that has a good resistance to tear and to weather. 
After stretching, it recovers its performances. weber jointseal PU MC is suitable for bonding various construction materials and as sealing joint.
It is also easily over painted.
The weber jointseal PU MC sealant conforms to the requirements of ASTM C 920, “Standard Specification for Elastomeric Joint Sealants”, Type S, Grade NS, Class 25, Use T and NT-Type A & M.


Surface of application

Wall, Floor, Roof

Available packaging

Lebanon Syria Jordan KSA UAE Qatar Kuwait Oman
280 ml 280 ml 280 ml 280 ml 280 ml 280 ml 280 ml 280 ml
600 ml 600 ml 600 ml 600 ml 600 ml 600 ml 600 ml 600 ml


Documentation and brochures

To know before applying

  • All surfaces should be clean, dry, free from grease, oil or dust and any contaminants that could harm bonding.
  • Remove old sealant residue completely before applying new sealant .We recommend cleaning concrete with a metal brush.
  • If necessary, rub down metal surfaces beforehand. After rubbing down, the surface should be re-cleaned.Allow the substrate to dry after degreasing.
  • For a cleaner job, protect the edges of the joint with self-adhesive masking tape.
  • If required place a backer rod inside the gap to be filled for correcting the depth.

For more information please refer to the technical data sheet of the product

Features and benefits

  • For interior and exterior applications
  • Flexible and resistant joint
  • U.V rays and climatic ageing resistant
  • Very Good adhesion on most construction materials
  • Bonding roof tiles and various materials
  • Resitance to tear
  • Can be easily over painted


  • This product should be used within 24 hours of opening the sausage; otherwise, the sealant could harden inside.
  • Avoid any contact with non-cured MS, hybrid PU or silicone sealants as well as with alcohols or ammonia during curing.