Sikagard®-403 W

• Contributes towards satisfying Materials and Resources (MR) Credit: Building Product Disclosure and Optimization — Material Ingredients under LEED® v4

• Contributes towards satisfying Indoor Environmental Quality (EQ) Credit: Low-Emitting Materials under LEED® v4

• Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by Institut für Bauen und Umwelt e.V. (IBU)

• French regulation on indoor VOC emissions class A+

• Biological Resistance BS3900-G6, SikaGard®-403W, IMSL, Report No. IMSL 2014/12/0

• Crack-bridging test EN 1062-7, SikaGard®-403W, kiwa, Report No. P 10108-E

• Gloss, Fineness of Grind, Wet Scrub Resistance, Contrast Ratio tests EN 13300, S

• Taint test SikaGard®-403W, Campden BRI, Report No. S/REP/139540/1

• Vapour permeability EN 7783-1, SikaGard®-403W, 4ward, Certificate No. PO 4500 49

• Vapour permeability EN 7783-1, SikaGard®-403W, Certificate No. L117647

Styrene-acrylic copolymer dispersion, water-based

12 months from date of production

The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Protect from direct sunlight and frost. Always refer to the packaging.

47 %

61 %

Good short-term resistance to mild acids, alkalis, cleaning agents and disinfectants. Please contact Sika Technical Services for specific information.

Disinfection with hydrogen peroxide vapour:

• Resistant when using STERIS VHP technology.

• Resistant to PEA vaporisation technology if a system structure with glass fibre reinforcement is used.

• Resistant when using Oxypharm vaporiser type NOCOSPRAY under the following conditions:

Beware of condensation. The substrate and uncured applied product must be at least +3 °C above dew point to reduce the risk of condensation on the surface of the applied product.

Visibly damp-free

Before applying Sikagard®-403 W on Sikagard®-403 W, allow:

Before applying 2-part top coats, allow:

Note: Times are approximate and will be affected by changing ambient conditions, particularly temperature and relative humidity.

Note: Consumption data is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply the Product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

1. IMPORTANT Avoid air entrapment. Use an electrical stirrer at low speed (300–400 rpm) to stir the Product until a uniform liquid has been achieved.

WARNING

Hazardous respirable droplets may be formed when sprayed.

1. Do not breathe spray or mist.

IMPORTANT

Reduced service life due to incorrect treatment of cracks

The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking.

1. For static cracks, ensure the width is suitable for overcoating with Sikagard®-403 W.
2. For dynamic cracks, ensure the movement is within the movement capacity of Sikagard®-403 W.

IMPORTANT

Risk of crazing due to excess moisture

Crazing may occur if coating undried surfaces.

1. Ensure the entire surface is fully dry before proceeding.
2. Allow new concrete substrates to cure or hydrate for a minimum of 10 days, and preferably 28 days.

IMPORTANT

Application on acoustic boards

Acoustic boards may lose some acoustic absorption after coating.

IMPORTANT

Ventilation in confined spaces

Always ensure good ventilation when applying the Product in a confined space.

IMPORTANT

Temporary heating

If temporary heating is required, do not use gas, oil, paraffin or other fossil fuel heaters, these produce large quantities of both CO₂ and H₂O water vapour, which may adversely affect the finish. For heating use only electric powered warm air blower systems.

Surface profile due to reinforcement

Note: A slightly rough surface profile will be visible if the Product is reinforced with Sika® Reemat Premium.

ROLLER APPLICATION

1. IMPORTANT For aesthetic reasons, use the same roller type in the same areas. Apply the Product to the correct film thickness per layer with a short-pile roller.

AIRLESS SPRAY APPLICATION

This method leads to a smoother surface compared to roller application.

1. IMPORTANT Use the same application type in the same areas. Apply the Product to the correct film thickness per layer with airless spraying application equipment, use tip sizes from 0.38–0.53 mm and a fan angle from 40° to 60°.

Clean all tools and application equipment with water immediately after use. Hardened material can only be removed mechanically.