Primer PU1050


Two-component, 100% solids, polyurethane resin as a primer

PRIMER PU-1050 is a two-component, low viscosity 100% solid resin. It has been specifically designed to increase bonding and improve the surface leveling prior to the pure polyurea TECNOCOAT or DESMOPOL systems. It can be applied on porous substrates such as concrete or mortar



Polyurethane resin as a primer for the next uses:

  • It is specially designed to increase adherence and improve the planimetry of the surfaces where the waterproofing and flooring systems  TECNOCOAT, DESMOPOL, TECNOTOP and TECNOFLOOR will be applied.

  • To apply on porous substrates such as concrete or mortar mainly.

NOTE: call our technical department about the application to other supports or situations

density 1,11 ±0,05 g/cm³
pot-life ±35~50minutes
drying time  ±2~3 hours
approx. coat consumption ± 150 g/m2
mixing ratio (in volume) 1:1


  • Made up of a mixture of two polyurethane-based components ( zero VOC)
  • it needs a flat, clean, and dry surface, as hard as possible.
  • It can be applied on porous surfaces: concrete, cement, etc. Excellent bond on porous surfaces
  • It doesn't need diluting never.
  • Depending on the state of the surface to be treated, unevenness, or plane level, the yield can vary between 150-300 g/sqm. in several layers.
  • It can be applied with a roller, brush, or airless spray equipment (verify pot life).
  • Do not apply to surfaces that are damp or exuding water coming from the interior of the substrate (water pressure due to phreatic level, condensations, leaking, etc.).
  • It can be applied in combination with mineral particles (silica sand) on very uneven surfaces.
  • At extremely low temperatures or in extreme weather conditions, consult the specification sheet of our alternative product PRIMER PUc-1050.


Metal tins of 5 kg each.


12 months for each product at temperatures between 5° C and 35° C, provided it is stored in a dry place. Once the tin has been opened, the product must be used immediately.


  • The surface must be clean and dry. If necessary, use pressurized water to remove any oil or grease residue, efflorescence, or other contaminants, as well as loose cement latencies. Before applying, take into account the residual humidity from cleaning, that is, wait until its total evaporation or verify any humidity in the surface using a measuring device.
  • In some cases, it will be necessary to use mechanical processes to prepare the surface, as well as chemical means to clean metal surfaces.
  • Mix the two components using a rod stirrer for about 2 minutes(medium speed).
  • Apply two or more coats of PRIMER PU-1050 until the desired thickness is obtained.
  • If the surface to be treated is very uneven, apply an initial coat of PRIMER PU-1050 mixed with mineral filings to level it.
  • Wait until completely dry before applying the desired waterproofing or concrete protection system.


These safety recommendations for handling, are necessary for the implementation process as well as in the pre and post, on exposure to the loading machinery.

  • Respiratory Protection: When handling or spraying use an air-purifying respirator.
  • Skin protection: Use rubber gloves, remove immediately after contamination. Wear clean body-covering. Wash thoroughly with soap and water after work and before eating, drinking, or smoking.
  • Eye / Face: Wear safety goggles to prevent splashing and exposure to particles in the air.
  • Waste: Waste generation should be avoided or minimized. Incinerate under controlled conditions in accordance with local laws and national regulations.

Anyway, consult the material and safety data sheet of the product(MSDS) or contact our technical department.




Density          ISO 1675

1,11 ±0,05 g/cm³

Viscosity         ISO 2555 700±100 cps
Density compounds A/B           ISO 1675 1,15 ±0,05 g/cm³  / 1,12 ±0,08 g/cm³
Viscosity compound A/B        ISO 2555 50~400 cps /400~950 cps

Mixing ratio (in volume)


Solids content   ISO 1768 100%
VOC(volatile organic compounds) 0

Adhesion to the concrete

>2 MPa


35~50 minutes

Tack-free time 

±60 minutes

Drying time

±2~3 hours

Recoat range time 

±3~24 hours

Ambiance application temperature range

5~35 ºC

Service temperature range 15~80 ºC

Max. Moisture on the support




Results were performed in the laboratory at 23ºC and 50% RH, under controllable conditions. These values may vary depending on the application, climatology, or substrate conditions.