Sikalastic®-506 OM

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.

~1.55 kg/l (+25°C) 

Attention: Do not apply more than 0.35 kg/m² Sikalastic®-506 OM per coat for layers 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.

*Please contact Sika Technical Department for more information.

Before applying the base coat of Sikalastic®-506 OM on the second coat of Sikalastic®-506 OM 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 consumption of 0.35 kg/m².

All substrates must be prepared using abrasive blast cleaning, scarifying equipment or other suitable mechanical methods and cleaned using high pressure water jet. 

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 e.g. by 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®-506 OM either when the concrete temperature is falling or stable can reduce outgassing. Prime the substrate before applying the Sikalastic®-506 OM based systems.

Brick and stone:

Mortar joints must be sound, and flush pointed. Use localized reinforcement over connection joints and prime before applying Sikalastic®-506 OM. For other substrates please contact Sika's Technical Department.

Prior to application, stir Sikalastic®-506 OM thoroughly for 1 minute in order to achieve a homogeneous mixture using a slow speed (300 - 500 rpm) drill and basket type paint mixer. Over mixing must be avoided to minimize air entrainment.

Prior to the application of Sikalastic®-506 OM the priming coat must have cured tack-free. Protect adjacent areas from splashes, over painting, damage etc. with an adhesive tape or plastic. Sikalastic®-506 OM 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. Sika® 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 Sika® Roofing 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®-506 OM 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®-506 OM to ensure a consistent thickness of the seamless Sika® Roofing Systems. Thick hairbrush: For application of Sikalastic®-506 OM to all details and penetrations. Airless spray equipment: Used only for the roof coating systems / topcoats of reinforced systems. Two spray applied layers is the minimum requirement. Please perform spray tests before application start. Reference shall be made to any other available application documentation and standard industry practice.

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