Sikalastic®-560 GCC

• Conforms to the requirements of LEED EQ Credit 4.2: Low - Emitting Materials: Paints & Coatings: VOC < 100 gm/l
• USGBC LEED rating: conforms to LEED SS Credit 7.2 -  Heat Island Effect-Roof, SRI ≥ 78
• Conforms to Estidama requirements for reflectivity
• Conforms to Dubai Green Buildings for reflectivity

Polyurethane modified Acrylic Dispersion

12 months minimum from date of production if stored properly in original, unopened and undamaged sealed packaging.

Store in dry conditions in original packaging at temperatures between +5 °C and +30 °C. Protect from direct sunlight and frost.

~65 %

~48 %

Roof Coating:
For UV-stable coating, to extend life of old roofs or as reflective coating to enhance energy efficiency.

Attention: Do not apply more than 0.35 kg/m² Sikalastic®-560 GCC per coat for layers without reinforcement.

-10 °C min. / +80 °C max.  (with reinforcement)
-5 °C min. / +80 °C max.  (without reinforcement)

+8 °C min. / +40 °C max.

80 % max.

Beware of condensation. Surface temperature during application must be at least +3 °C above dew point.

+8 °C min. / +40 °C max.

< 6 % moisture content.
No rising moisture according to ASTM (Polyethylene-sheet). No water / moisture / condensation on the substrate.

Before applying Sikalastic®-560 GCC on primer Sikalastic®-560 GCC diluted with 10 % water:

Before applying the base coat of Sikalastic®-560 GCC on the second coat of Sikalastic®-560 GCC allow intermediate coats to fully cure

¹⁾ Assuming that all dirt has been removed and intercoat contamination is avoided.

Note: Times are approximate and will be affected by coating thickness and changing ambient conditions particularly temperature and relative humidity. Low temperature and high humidity retard curing, while high temperatures and low humidity accelerate curing progression. The above times are based on a coating thickness of 0.35 kg/m².

Note: Times are approximate and will be affected by coating thickness and changing ambient conditions particularly temperature and relative humidity. Low temperature and high humidity retard curing, while high temperatures and low humidity accelerate curing progression. The above times are based on a coating thickness of 0.35 kg/m².

All substrates must be cleaned and prepared using high pressure water jet. Abrasive blast cleaning, scarifying equipment to or other suitable approved mechanical methods.
Cementitious substrates:
New concrete should be cured for at least 28 days and should have a pull-off strength ≥ 1.5 N/mm².
Loose friable material and weak concrete must be completely removed by mechanical means to achieve an open textured surface and all surface defects such as blowholes and voids must be fully exposed.
Repairs to the substrate, filling of joints, blowholes/voids and surface leveling must be carried out using the appropriate Sika® products. Refer to Sika’s Technical Department for further advice.
High spots must be removed by for example grinding.
Outgassing is a naturally occurring phenomenon of concrete that can produce pinholes in subsequently applied coatings. The concrete must be carefully assessed for moisture content, air entrapment, and surface finish prior to any coating work. Installing the Sikalastic®-560 GCC either when the concrete temperature is falling or stable can reduce outgassing.
Prime the substrate before applying the Sikalastic®-560 GCC systems.
Brick and stone:
Mortar joints must be sound and flush pointed.
Use localised reinforcement over connection joints and prime before applying Sikalastic®-560 GCC.
Bituminous felt:
Ensure that Bituminous felt is firmly adhered or mechanically fixed to the substrate.
Bituminous felt should not contain any badly degraded areas and be primed before applying Sikalastic®-560 GCC.
Metals:
Metals must be in a clean sound rust free condition.
Metals surfaces must be free of oil and greases.
Abrade exposed surfaces to reveal bright metal.
Use localised reinforcement over joints and fixings.
Paints/Coatings:
Ensure the existing material is sound and firmly adhered.
Remove any oxidized layers and use localised reinforcement over joints.
Existing SikaRoof® CET Systems:
The existing SikaRoof® CET Systems should still be soundly adhered to the substrate be clean, dust free and dry.

Prior to application, stir Sikalastic®-560 GCC thoroughly for 1 minute in order to achieve a homogeneous mixture using a slow speed (330 - 500 rpm) drill and basket type paint mixer.
Over mixing must be avoided to minimise air entrainment.

Prior to the application of Sikalastic®-560 GCC the priming coat must have cured tack-free. Protect adjacent areas from splashes, over painting, damage etc. with an adhesive tape or plastic.
Sikalastic®-560 GCC is applied in 2 – 6 coats as per the required system. Prior to the application of each coat the indicated waiting times must be followed.
Sikalastic® Flexitape Heavy or Sika® Reemat Premium is applied at areas having high movements, irregular substrate or to bridge cracks, joints and seams on the substrate.
Please note, always begin with detailing works prior to waterproofing the horizontal surface.

Tools:
High Pressure Jet Washer (minimum 150 bar): If dust, vegetation, moss / algae or other contaminants are present on the existing roof, a power washer is required to clean the substrate prior to the application of SikaRoof® Systems. Existing chippings should be removed by hand or scabbling prior to power washing.
Squeegee: Useful when removing excess water from the roof after overnight rain
Drill and paddle: Sikalastic®-560 GCC should be mixed for one minute using a slow speed (300-500 rpm) drill and basket type paint mixer.
Solvent resistant short-piled roller: Used in the application of Sikalastic®-560 GCC to ensure a consistent thickness of the seamless SikaRoof® systems.
Thick hair brush: For application of Sikalastic®-560 GCC to all details and penetrations.
Airless spray equipment: Used only for the roof coating systems / top coats of reinforced systems. Two spray applied layers is the minimum requirement. The pump should have the following parameter:

• minimum pressure: 220 bar
• minimum output: 5.1 l/min
• minimum Ø nozzle: 0.83 mm (0.033 inch)

For example: Wagner Heavycoat HC 940 E SSP Spraypack.

Note: Please refer to the most recent issue of the specific Method Statement

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