Industrial Flooring


Monneli Primer PU

Polyurethane Primer

PRIMER PU is used as follows:
Serves as a consolidating treatment on friable supports prior to application of epoxy polyurethane coatings.
Works as an anti-dust treatment of industrial floorings.
Serves as primer on semi-porous substrate prior to the application of epoxy or polyurethane coating.
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Technical Information
Product Description

PRIMER PU is a single pack, modified Polyurethane primer designed to improve adhesion between a large variety of coatings and substrates. It acts as a sealer on porous substrates such as concrete and improves adhesion to difficult substrates such as non-ferrous metals.

  • No crystallizing
  • Good adhesion
  • Impermeability to liquids
  • Good chemical resistance
  • Excellent abrasion resistance
  • Primer and sealer coat in one product
Packaging, Coverage / Consumption


PRIMER PU is available in 4 and 15 Liter packing.



6-8 m²/ Liters per coat according to the porosity of the support

Shelf Life & Storage


Store the product in dry closed place with temperature between +5°C and +35°C. In these conditions, the product maintains its stability for 12 months.

Technical Properties






Mix density at 25°C

0.96 kg /L

Pot-life time at 25°C

90 minutes

Re-coatable at 25°C

after 8-12 hours

Bonding strength

Greater than
cohesive strength of
concrete substrate

Tests performed at 25°C, 50% of relative humidity and in absence of ventilation.

All values are subject to 5-10 % tolerance

Application Information
Instructions for use

Surface Preparation

All surfaces should be sound, clean, dry and free from loose and flaking material, efflorescence, laitance, curing compounds, dirt, oil and grease.
New concrete or cementitious surfaces should be allowed to cure and have moisture content not exceeding 5%. Old or existing floor should be refurbished mechanically to ensure clear sound substrate.

In case of old concrete floors use mechanical methods like grinding or blasting in order to provide a suitable clean surface. All necessary repairs should be made prior to application by using COLMEF epoxy mortar.


For the preparation of product, pour component B (hardener) into component A (resin) and mix carefully with electric mixer at low number of turns, till obtaining a perfect mix. Allow the product to induct for 10 minutes to reduce the risk of epoxy blush.


Apply the product with a brush or roller. For treatment of friable substrate or very porous surface, apply the product up to complete saturation of the support. Onto very compact supports, avoid the build-up of material.

Re-coating can be executed after 8-12 hours depending on surface and temperature conditions.


Clean tools with Solvente 10 promptly before material hardens. Cured material must be mechanically removed.


  • Don’t apply the product with imminent rain forecast.
  • PRIMER PU should not be applied on asphalt floor and PVC tiles.
  • PRIMER PU should not be applied on the concrete surface that has greater than 4% maximum moisture content.
Additional Information
Health & Safety

Avoid contact with skin & eyes. Protective clothing such as gloves & safety goggles should be worn during application. Treat any splashes to the skin or eyes with fresh water immediately.


Should the product be accidentally swallowed, do not induce vomiting, but call for medical assistance immediately. Ensure adequate ventilation at site and avoid inhalation of vapors.

Important note

The information in this Technical Data Sheet is based on Colmef Monneli’s experience. Colmef Monneli does not accept any liability arising from the use of its products as it has no direct or continuous control over where or how its products are applied. All Colmef Monneli’s Data Sheets are updates on regular basis. It is the user’s responsibility to obtain the latest version.

additional materials
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Technical Properties Sheet
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The product is used in the following:
Pile cap head treatment & protection
Pile cap waterproofing sealing
Heavy machinery, equipment or structural elements needing maximum bearing support
Large or wide plates requiring precision grouting
High vast lighting bases
Narrow clearance situations including anchor bolts
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