Surface Treatment

Water Repellant Sealer

Monneli Idrosil L

Water Repellant Acrylic Sealer

IDROSIL L is used as a dustproof sealer and as clear coat for new and old concrete surfaces. It is used as sealer for the following:
Colored and stamped concrete
Exposed aggregate concrete
Masonry bricks
Manufactured and Natural Stones
back to Surface Treatment
Technical Information
Product Description

IDROSIL L is an acrylic water based sealer used on exterior concrete surface. It dries to form a non-yellowing clear film that seals and protect concrete and masonry surfaces against stains, grease, oil, rust and water while enhancing the natural color of the applied surface.

  • Vapor barrier and protective sealer
  • Can be used as a primer coat for top decorative, architectural finishes
  • Enhances the resistance to rain, sun, oil, grease, industrial chemicals, solvents, de-icing salts and most cleaning solvents
  • Eco-friendly. No VOC
  • UV Resistant
  • Economical
  • Easy to apply
Compiliance Standard
  • ASTM C 309, Type 1, Classes A & B
  • ASTM C 1315, Type 1, Class A
  • ASTM D2697
  • ASTM D 70
Packaging, Coverage / Consumption


IDROSIL L is packed in 20 liters and 210 liters drums.


Coverage: 6-8m2/liter.

Shelf Life & Storage


Keep in original well closed drum, in dry and sheltered place, at the temperature between +5ºC and +30ºC.


Shelf life:

12 months from date of manufacturing when stored properly.

Technical Properties



White emulsion which forms a clear film when drying

Density at 25°C

1.02 kg/L

Volume solids

Approx. 25%

Touch dry

20-30 minutes

Drying time at 25°C

4-8 hours

pH at 25°C


Film thickness

25-30 micron

Service temperature

from -5ºC to +70ºC

Resistance to water penetration

Very good

All values are subject to 5-10 % tolerance

Application Information
Instructions for use

Surface Preparation

All surfaces should be clean, sound and uncontaminated.

This preparation should leave an exposed concrete, free from dust, loose particles, deleterious matter, oil, grease, chemical films and other contaminants.


Test a small area of the surface (generally 1.0m x 1.0m section) before starting application of the sealer to ensure desired performance results, aesthetics & coverage rate. Allow 5-7 days for the product to fully react.


IDROSIL L is a single component, applied at full strength and never diluted.
Mix the material thoroughly before & during application. IDROSIL L should be applied with a brush, roller or low pressure non-atomizing spray uniformly onto the surface at a rate of 6-8m2/ liter.

For vertical surfaces, flood the surface by applying from the bottom up applied to saturation with a controlled (20cm) material rundown to ensure maximum penetration on the surface.

Extremely porous substrate may require two coats. Apply the second coat as soon as the surface of the first coat has been visibly dry which around 2-4 hours at ambient temperature. Cooler temperature or higher relative humidity may extend drying time.

Surfaces with salty efflorescence must be cleaned mechanically or washed with acid cleaner and subsequently rinsed with   water. Wait for the surface to dry, before proceeding with the application of IDROSIL L.

All cement supports must be allowed to cure for at least 21 days before being impregnated with the product.


Equipment and tools used should be cleaned promptly with water.


  • Water based coatings dry by evaporation of water from the film. It is necessary to protect the newly applied material during this time form the rain, freezing conditions, high temperature, high relative humidity and physical damage.
  • Do not apply if rain, dew or water exposure is expected with 24 hours of application. Avoid application in direct sunlight and during high winds.
  • Not recommended for dense surfaces such as tiles or granite.
  • Do not apply in areas where negative hydrostatic pressure is possible.
  • Apply in thin coats only.
Additional Information
Health & Safety

Direct contact with the product may result in irritation of the skin and eyes. Product vapors may also cause irritation.

Wear gloves and masks during application. Remove any contaminated clothing and wash skin thoroughly with soap and water. Remove ignition sources prior to use.

In case of accidental eye contact, wash with plenty amount of water and seek immediate medical attention.

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
Fast Download
Technical Properties Sheet
download (*.pdf 0.28Mb)
More Products from this section
Monneli Idrosil A

Water Repellant Penetrating Water Based Sealer

Monneli Idrosil XS

Solvent Based Silane-Siloxane Penetrating Water Repellant Treatment

Monneli Epochim K 100

High Chemical Resistant Epoxy Coating

EPOCHIM K100 is used as follows:
A resistant coating against chemicals. It also acts as an abrasion protective coating for floors and walls and aggressive products, stored in concrete tanks
As an abrasion and chemical resistant coating in seawater tanks, sewage works, manholes and pipe linings
Due to its smooth and easily cleaned surface, EPOCHIM K 100 is especially suited for wet rooms of all types, abattoirs, dairies and agricultural buildings, etc.
Contact us
Choose a location
P.O. Box: 123808, Dubai
Toll: +971 4 8803488
Fax: +971 4 8803450
Site Map