Sikagard®-550 W Elastic

Sikagard®-550 W Elastic is listed on the Eco-Product Directory as environmentally friendly product choice for green building initiatives. (application no.: PL-01465-2022).

• CE Marking and Declaration of Performance to EN 1504-2 - Surface protection product for concrete - Coating
• Surface protection system OS-DII ZTV-SIB 90, Sika MonoTop®-620, Sikagard®-545 W Elastofill / -550 W Elastic, Institut für Bauforschung Germany, Test report No. A 2714/D2/V12
• Performance testing, EN 1504-2, Sikagard®-550 W Elastic, LPM AG, Report No. A-33'882-1, A-33'882-2E
• Determination of crack bridging, EN 1062-7, kiwa, Report No. P 8690a

EN 1504-2: Surface protection product for concrete - Coating

Acrylate dispersion

24 months from date of production.

The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +25 °C.
Always refer to packaging.

~1.39 kg/l (at +20 °C)

~66.1 %

~53.4 %

*For intensive yellow or red colour shades and / or a dark substrate, more than 2 coats maybe required (or greater thickness per coat).

Primer options

Sika® levelling / re-profiling mortars, weak concrete with a tensile adhesion strength < 1 N/mm²:

Sikagard®-551 S Elastic Primer with up to 10 % Sika® Thinner C 

Very dense concrete:

Sikagard®-551 S Elastic Primer with up to 10 % Sika® Thinner C

Minimum required dry film thickness to achieve the required characteristics (CO₂ equivalent air thickness of 50 m) ≈ 160 μm.
Minimum required dry film thickness to achieve full durability characteristics (CO₂ diffusion, adhesion after thermal cycling and crack bridging) ≈ 340 μm.

+8 °C min. / +35 °C max.

< 80 %

Substrate and ambient temperature must be at least 3 °C above dew point.

+8 °C min. / +35 °C max.

Waiting time between coats at +20 °C substrate temperature:

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

When application is on existing coatings, the waiting time for both primers will increase by 100 %.

Maintenance coats of Sikagard®-550 W Elastic can be applied without priming if the existing coat has been thoroughly cleaned.

Full cure: ~7 days at +20 °C

Times is approximate and will be affected by film thickness, changing ambient conditions particularly temperature and relative humidity.

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

Reference must be made to the Sika Method Statement: Protective Coatings

Note: Confirm waiting / overcoating times of any previous mortars, primers or coats is achieved before applying subsequent coats. (Refer to waiting / overcoating time in Application Information)

Note: Confirm product application conditions: substrate moisture content, substrate, air and product temperatures, relative humidity and dew point.

Note: Make sure the application area is well ventilated during application and drying.

Note: To prevent air bubbles affecting the finish, do not 'over' brush, roller or spray.

Protective coating

Manual application

1. Apply the Product evenly over the surface with a brush or short pile fleece roller at the required consumption.
2. Control the layer thickness during application using a thickness gauge to achieve the required total dry film thickness. 
3. The coating must be continuous, pore free and to the required surface finish.
4. Protect the Product from heavy rain or rain showers until dry to prevent surface damage.
5. Apply additional coats as required.

Airless spray application

IMPORTANT

Do not use aerosol car body type spraying equipment

1. Spray apply the product in a continuous cross-spray operation and at a speed to achieve a consistent thickness and the required surface finish.
2. Control the layer thickness during application using a thickness gauge.
3. The coating must be continuous, pore free and to the required surface finish.
4. Protect the Product from heavy rain or rain showers until dry to prevent surface damage.
5. Apply additional coats as required.

Clean all tools and application equipment with water immediately after use.

Hardened material can only be mechanically removed.

For Sikagard®-551 S Elastic Primer use Sika® Thinner C.