Primer PU1050


Two-component, 100% solids polyurethane resin as a primer (for low temperatures)

PRIMER PUc-1050 is a two-component, low viscosity 100% solid resin. It has been specifically designed to increase bonding and improve the surface leveling for the waterproofing and coating systems as  TECNOCOAT, DESMOPOL, TECNOTOP, and TECNOFLOOR, always in low ambiance temperature conditions.




Polyurethane resin for the next uses:

  • To apply in situations of low temperatures
  • 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 at 23ºC 1,11 ±0,05 g/cm³
pot life at 15ºC ±35~50minutes
trying time at 15ºC  ±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.


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.
  • 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.
  • 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.
  • Apply two or more coats of PRIMER PUc-1050 until the desired thickness is obtained.
  • If the surface to be treated is very uneven, apply an initial coat of PRIMER PUc-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 at 23ºC   ISO 1675

1,11 ±0,05 g/cm³

Viscosity at 23 ºC    ISO 2555 700±10 cps
Density compounds A/B A at 23ºC     ISO 1675 1,15 ±0,05 g/cm³  / 1,12 ±0,08 g/cm³
Viscosity compound A/B at 23 ºC    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

Pot-life at 15 ºC

35~50 minutes

Tack-free time  at 15 ºC

±60 minutes

Drying time at 15 ºC

±2~3 hours

Recoat range time at 15 ºC

±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 15ºC  or 23ºC and 50% RH, under controllable conditions. These values may vary depending on the application, climatology, or substrate conditions.