Primer PU-1050


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


Download PDF data sheet . PRIMER PU-1050TDS. Technical Data sheet Download all documents . PRIMER PU-1050Downloads


Polyurethane resin as a primer for the next uses:

  • It is specially designed to increase adherence and improve the planimetry of the surfaces where be applied TECNOCOAT or DESMOPOL waterproofing and coating systems

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

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

density at 23ºC ±1,11 g/cm³
viscosity at 23ºC 700  ±50 cps
pot life at 23ºC ±35~50minutes
drying time at 23ºC  ±2~3 hours
approx. coat consumption ± 150 g/m2
mix ratio in volume 1:1


  • Made up of the mixture of two polyurethane-based components, it needs a flat, clean, and dry surface, as hard as possible.
  • It can be applied on porous surfaces: concrete, cement, etc.
  • 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).
  • It can be applied on surfaces with a maximum surface humidity of 5%.
  • 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.
  • 100% solids (zero VOC's)
  • At extremely low temperatures or in extreme weather conditions, consult the specification sheet of our alternative product PRIMER PUc-1050.
  • Excellent bond on porous surfaces.
  • It has CE marking if it is used on the waterproofing systems, TECNOCOAT P-2049, based in pure polyurea or DESMOPOL  system based on polyurethane, under European guide ETAG #005.


Metal tins of 5 kg each one.


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 at 23ºC   ISO 1675

±1,11 g/cm³

Viscosity at 23 ºC    ISO 2555 700±50 cps
Density compounds A/B A at 23ºC     ISO 1675 1,15±0,05 g/cm³ - 1,13±0,05 g/cm³
Density compound B at 23ºC     ISO 1675 1,03±5% g/cm³
Viscosity compound A/B at 23 ºC    ISO 2555 65±50 cps - 900±50 cps

Mixing ratio (in volume)


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

Adhesion to the concrete

>2 MPa

Pot life at 23 ºC

35~50 minutes

Tack-free time  at 23 ºC

±60 minutes

Drying time at 23 ºC

±2~3 hours

Recoat range time at 23 ºC

±3~24 hours

Ambiance application temperature range

5~35 ºC

Service temperature range 15~80 ºC

Max. Moisture on the support




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