Industrial Flooring


Monneli Uraprime W

Heavy Duty Polyurethane Primer for Uralevello & Uramassetto M1 Flooring Systems

As a primer to contentious substrates to reduce porosity and air release prior the application of Epofloor flooring and coating systems.
As a primer on steel substrates for use with polyurethane coating systems Uralezello and Uramassetto M1.
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Technical Information
Product Description

Uraprime W is a low viscosity solvent free primer based on Colmef Monneli’s heavy duty polyurethane resin binders. Monneli Uraprimer W is not designed for stand alone use and must be overlaid by the appropriate Uramassetto M1 coatings. The product comes in 3 components that need to be mixed completely using a suitable mixing paddle fited to a slow speed mixer (300-500 rpm) prior to application.

  • Easily applied by brush and steel trowel.
  • Designed for highly porous surfaces
  • High wetting properties
  • Damp tolerant
  • Cost effective, suitable for use in MENA region conditions
Packaging, Coverage / Consumption

3kg kits

Consumption: 10 m2 / 3kg kit

Shelf Life & Storage

Original sealed container  of  Uraprime W has a shelf life of 12 months provided it is stored clear of ground in a dry shaded place below 35ºC.

Technical Properties


Pot Life @ 25°C

30 minutes

Tensile Strength (ASTM D638-14)

6 MPa

Concrete Adhesion (ASTM D7234-12)

Concrete Fails

Coefficient Thermal Expansion (ASTM C531)

2.4 X 10-5

Water Absorption (CP.BM 2/67/2)

0 mL

Application Temperature

10°C to 60°C



Open Time (Recoating Time) @ 25°C / @ 40°C

8 hours / 4 hours

Application Information
Instructions for use

It is essential  that  Uraprime W  is  applied  to a sound, clean and dry surface in order to achieve maximum bond strength between substrate and coating/repair products.


Mix Uraprime W as supplied. Mix thoroughly for about 2 minutes by electric drill with spiral mixing paddle. Once mixed, the Uraprime W shall be immediately applied in a thin continuous film using stiff brushes or rollers. Brush well into the sides and floor of the anchor grooves. Avoid over-application and puddles.

Uraprime W shall be allowed to become tack- free prior to the application of Polyurethane coating (unless otherwise specified) but well within the open time specified for the given temperature. The hotter the substrate, the more quickly the primer will become dry.


Uraprime W shall be allowed to become tack- free prior to the application of Polyurethane coating (unless otherwise specified) but well within the open time specified for the given temperature.

Defects in the primed surface, such as blow holes in the surface as a result out of bleed run pores in the substrate, should be remendied prior to overlaying. Failure to do so may lead to surface defects in the finished floor.

If the time between coats exceeds 48 hours, or if condensation or water impacts the surface, fully abrade the surface. This will normally mean that the floor must be reprimed.


All tools and equipment shall be cleaned immediately after use with water.

Surface Preparation

The surface should be at least 5 days old and visbly dry with no standing water. Laitence deposits on new concrete are best removed by light grit blasting, mechanical scabbling or grinding.

Where heavy contamination by oil and grease has occurred or existing coatings are present, it is essential that all contaminations are removed.

Additional Information
Health & Safety

Uraprime W is non-flammable. Refer to the Material Safety Data Sheet for further information.

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 updated 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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EPOFLOOR E240 is used for a variety of industrial applications such as:
• Production assembly areas, workshops, dairies, bottling plants, breweries, pharma plants, kitchens, showrooms, etc.
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