Protective Coating


Monneli Ureaprime PU1

Concrete & Wood Primer/ Sealer

Primer for concrete
Primer for wood substrates
Sealer and vapor block on damp concrete and problematic situations
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Technical Information
Product Description

UREAPRIME PU1 is a single component, 100% solids, UV stable urethane primer. It is specifically formulated to be used as a primer that can be applied over damp concrete.

UREAPRIME PU1 cures by chemical cross-linking to produce a primer for long term bonding. It is an excellent choice for use as a sealer and vapor block because of it’s film forming properties.

  • Eco-friendly, Low VOC
  • Non-flammable
  • Odorless
  • Non-toxic
  • Ready to use
  • Safe for manual applications
Compiliance Standard
  • ASTM D412
  • ASTM D624
  • ASTM D4541
Packaging, Coverage / Consumption

UREAPRIME PU1 is available in 4 Liter Packing, 19-Liter Pails, and 200-Liter Drums

Shelf Life & Storage

UREAPRIME PU1 contains chemically active materials which will react with water, alcohols, amines and other compounds. After each use, cap container with dry air or nitrogen.

UREAPRIME PU1 should be stored in original, unopened factory containers, under normal storage conditions of 15° C to 27° C. In these conditions, prouct shelf life is 12 months from the date of production.

Technical Properties


Solid Content



250 mPas

Tensile Strength (ASTM D412)

23.3 N/mm2

Elongation (ASTM D412)


Tear Strength (ASTM D624)


Adhesion to Concrete (ASTM D4541)

> 3.0 N/mm2

Overcoat Window (min)

2 hours

Overcoat Window (max)

24 hours

Application Information
Instructions for use


UREAPRIME PU1 is a single component product, therefore no mixing is necessary.


Apply UREAPRIME PU1 by brush, roller, or squeegee.


UREAPRIME PU1 will dry to the touch in less than two hours after application in climatic conditions of 25°C and relative humidity falls of 50%. The film remains reactive for up to 24 hours after application.


Clean tools immediately after use.

Surface Preparation

The surface of the substrate shall be sound, clean and uncontaminated.

This preparation shall be such as to leave a sound expose surface free from dust, loose particles and any deleterious matter. If the surface is defective or has laitance, it must be cut back to a sound base.

New concrete or cementitious surfaces should be at least 28 days old and have moisture content not exceeding 5%. Old or existing surface should be refurbished mechanically to ensure clear and sound substrate.

Additional Information
Health & Safety

All body parts should be covered and activated charcoal respirators or forced-air breathing apparatus are necessary for safe application of this product. Keep uncured product away from children at all times. All personnel should read and understand the safety recommendations stated in the Material Safety Data Sheet .

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.

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Technical Properties Sheet
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