Single component solvent based polyurethane primer

  • Significantly improves the adhesion of polyurethane and polysulphide sealants over several construction substrates such as concrete, asphalt, galvanized steel, aluminium and glass.
  • Increases the service life of the sealing system.
  • Easy to use, single component product that does not need mixing.

Flexprime PU is a low viscosity single component solvent based moisture cure polyurethane primer especially formulated to significantly enhance the adhesion of polyurethane and polysulphide sealants with the most common porous and nonporous construction substrates. 


Flexprime PU is available in 1 litre, 4 litre and 20 litre packs.


Flexprime PU should be applied in one coat or two successive coats at a rate of 5 - 10 m2/ltr depending on the substrate porosity to achieve a dry film thickness of 40 - 80 microns per layer.

Shelf Life

Flexprime PU has a shelf life of 9 months from the date of manufacturing if stored at temperatures between 5 and 25°C in its original unopened package.


Flexprime PU is used to enhance the bond between polyurethane and polysulphide sealants and the substrates in the following applications:

  • High porous substrate such as normal grade concrete, mortar and red bricks.
  • Impervious substrates such as aluminium, steel and glass.
  • Rubber and asphalt surfaces.

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Don Construction Products - Qatar

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New Industrial Area, Street 21, Zone 81, bldg. # 9
P.O Box 24839 
Doha - Qatar
Tel.: +974 4 411 4004
Fax: +974 4 411 4014

E-mail: info.qatar@dcp-int.com