Sikalastic® WR

• Conforms to the requirement of LEED EQ credit 4.2: Low - Emitting Materials. Paints and Coatings: VOC < 100 gm/l
• Certified by Thomas Bell-Wright International Consultants according to ASTM E84-16 : Standard Test Method for Surface Burning Characteristic of Building Materials. Certificate number: TBW0300202

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 %

Wet Room Waterproofing

For cost efficient waterproofing solutions in new construction and refurbishment projects.

These figures are theoretical and do not include for any additional materials required due to surface porosity, surface profile, variations in level and wastage.It is recommended to apply a mortar fillect or Sika® Flexitape at all floor wall joints.

-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.

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

Before applying Sikalastic® WR on primer Sikalastic® WR diluted with 10% water.

Before applying Sikalastic® WR on Sikalastic® WR allow intermediate coats to fully cure.

¹⁾ Assuming that all dirt has been removed and 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.

Prior to the application of Sikalastic® WR the priming coat must have cured tack-free. Protect adjacent
areas from splashes, over painting, damage etc.with an adhesive tape or plastic.
Sikalastic® WR is applied in minimum 2 coats. 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).
Squeegee: Useful when removing excess water.
Drill and paddle: Sikalastic® WR 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® WR to ensure a consistent
Thick hair brush: For application of Sikalastic® WR to all details and penetrations.
Airless spray equipment: Used only for the 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.

The coating must be covered with a hard protection. (ceramic tiles, stone slabs).
For bonding tiles or equivalent materials, use SikaCeram C2 type according to EN 12004 or an adhesive compatible with Sikalastic® WR. The application can take place after the second layer has fully cured.

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

All substrates must be cleaned and prepared using high pressure water jet. Abrasive blast cleaning, scarifying equipment to or other suitable approvedmechanical 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® WR either when the concrete temperature is falling or stable can reduce outgassing.
Prime the substrate before applying the Sikalastic® WR systems.

 
Brick and stone:
Mortar joints must be sound and flush pointed.
Use localized reinforcement over connection joints and prime before applying Sikalastic® WR.

 
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® WR.

 
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 localized reinforcement over joints and fixings.

 
Paints/Coatings:
Ensure that the existing material is sound and firmly adhered.
Remove any oxidized layers and use localized reinforcement over joints.

Prior to application, stir Sikalastic® WR thoroughly for 1 minute in order to achieve a homogeneous mixture.
Over mixing must be avoided to minimise air entrainment.

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