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Sikagard®-1855 G

Single component, high build hydrophobic coating for foundations

Sikagard®-1855 G is a single component high build hydrophobic coating for foundations. This water based, protective coating formulated from high performance acrylic polymers, able to be applied even upon green concrete at 24 hours after placing. When cured, Sikagard®-1855 G provides excellent abrasion and chemical, including acid, resistance. Suitable for use in hot and tropical climatic conditions.

  • One component and easy to apply
  • Good abrasion and chemical resistance
  • UV stable
  • Can be applied over damp surfaces
  • Can be applied over green concrete to act as a curing compound in addition to a protective coating
  • Environmentally friendly and safe to use (free from hazardous materials/ carcinogens such as coal tar pitch, hydrocarbon-based solvents, aromatic amines, asbestos and can be used in confined spaces)
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Usage

Sikagard®-1855 G is developed to protect concrete sub- strates from corrosion and deterioration. It is an ideal protective coating for underground structures and foundations and can be applied on green concrete, serving as a curing compound as well as protection, saving time, labor and cost.
   

Advantages

  • One component and easy to apply
  • Good abrasion and chemical resistance
  • UV stable
  • Can be applied over damp surfaces
  • Can be applied over green concrete to act as a curing compound in addition to a protective coating
  • Environmentally friendly and safe to use (free from hazardous materials/ carcinogens such as coal tar pitch, hydrocarbon-based solvents, aromatic amines, asbestos and can be used in confined spaces)

Packaging

19 L unit

Colour

Grey

Product Details

Product Information

Shelf life

12 months from date of production

Storage conditions

Store in original, unopened, sealed and undamaged packaging in dry conditions at temperatures between +15 °C and +25 °C. Protect from direct sun light, heat and moisture.

Density

~1.29 kg/l (25°C)(ASTM D1475)

Solid content by volume

~45 %

(ASTM D2697)

 
Technical Information

Tensile adhesion strength

≥ 1.0 N/mm2

(ASTM D4541)

Chemical resistance

Lactic Acid 20 %Resistant
Acetic Acid 20 %Resistant
Nitric Acid 5 %Resistant
Ethylene Glycol 40 %Resistant
Copper Sulphate 25 %Resistant
Zinc Sulphate 25 %Resistant
Magnesium Sulphate 25 %Resistant
Tap WaterResistant
Sea WaterResistant
Ground WaterResistant
High Sulphate WaterResistant
Distilled WaterResistant

Sikagard®-1855 G is meant to be used as a protective coating against below ground environment and external applications. It is not suitable to be used as a high chemical resistant coating against strong acids and alkalis. Contact Sika Technical Services Department for specific details.

Water absorption

~0.2 %

(BS 1881, Part 122)

Application

Application Information

Layer thickness

Min. 360 microns dry film thickness (DFT), acheived by application in 2 coats, each 180 microns DFT.

Higher thickness can be acheived with multiple coat cross-wise application.

Material temperature

+15 °C min. / +30 °C max.

Relative air humidity

≤ 85 %

Dew point

Temperature must be at least 3 °C above dew point

Substrate temperature

+10 °C min. / +40 °C max.

Curing time

7 days at 25 °C

Waiting time to overcoating

6–7 hours at 25 °C between 1st and 2nd coat. Refer to Method Statement if multiple coat application is required.

Times are approximate and will be affected by changes in ambient conditions, particularly temperature and relative humidity

Drying time

~45 min. at 25°C

(ASTM D1640)

Times are approximate and will be affected by changes in ambient conditions, particularly temperature and relative humidity.
Consumption

Consumption

As a guide: 2.5 m2 per litre at 400-micron wet film thickness (WFT), per coat.

Min. two coats application is recommended.

Please refer to Method Statement for system specific coverage rates. Note: These figures are theoretical and do not include for any additional material required due to surface porosity, surface profile, variations in level and wastage, etc..
Application steps

SUBSTRATE PREPARATION

The surface to which Sikagard®-1855 G is applied should be clean and free from oil, salt, grease and any other substances which may impair adhesion.

MIXING

Sikagard®-1855 G should only be well stirred before use.

APPLICATION

Sikagard®-1855 G can be applied by brush or short nap paint roller in min. 2 coats. Application should take place within the overcoating intervals of the coating. If the overcoating interval is missed, then the surface of existing coat should be lightly abraded and cleaned prior to recoating.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with clean / soapy water immediately after use. Hardened and/or cured material can only be removed mechanically.

 

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