Sikalastic®-311 (AE)

Sikalastic®-311 (AE) follows the requirements of ASTM D 2833, D-412, D-417, E-96/BW & ASTM C 836

Nil water penetration in accordance with BS EN 12390

Pitch Modified Polyurethane Resin

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 +35 °C. Protect from direct sunlight and frost.

~65 %

~85 %

Sikalastic®-311 (AE) is resistant to de-icing salts, bitumen, alkalis, fresh- and ground water and various chemicals.

+5 °C min. / +40 °C max.

5 % min. / 85 % max.

+5 °C min. / +60 °C max.
 

Damp or dry substrate, no standing water
No rising moisture according to ASTM (Polyethylene-sheet)

Before applying Sikalastic®-311 (AE) on Sikalastic®-311 (AE).

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

If over coating window of 24 hours is not atchieved the area should be cleaned and then primed with SikaBit® P-11 SA or SikaBit® P-12 AE as a reactivation primer.
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.

~1.1 kg/ m²  and mm Wet Film Thickness

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level and wastage etc.

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:
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 air entrapment, and surface finish prior to any coating work. Installing the Sikalastic®-311 (AE) either when the concrete temperature is falling or stable can reduce outgassing.
Prime the substrate before applying the Sikalastic®-311 (AE) systems.
Brick and stone:
Mortar joints must be sound and flush pointed.
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®-311 (AE).
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 and primed with Sikalastic® Metal Primer.
Paints/Coatings:
Ensure that the existing material is sound and firmly adhered. Remove any oxidized layers.

Please note: Always apply a test area first

• Prior the application of Sikalastic®-311 (AE) the priming coat if used must have cured tack-free.
• Damageable areas (handrails, etc) have to be protected with tape or plastic wrapping.
• Priming: Prime the surface using Self Primed Sikalastic®-311 (AE).
• Application: Apply 2 coats Sikalastic®-311 (AE) to the prepared substrate after mixing the Sikalastic®-311 (AE) with a slow speed mixer, then apply it using a notched trowel and spread the product evenly over the area. Apply two coats in order to avoid pinholes.
• Reinforcement Sheet: for higher tensile strength and Tear resistance it is recommended to incorporate Sikalastic® Reemat Premium reinforcement sheet in between the 2 coats with 24 hours curing period prior to applying the final coats, in which a homogeneous finish should be achieved at the final stage of coating application.
• UV Exposed Areas: for UV protection apply Sikalastic® 560-GCC at a minimum coverage rate of 1.4 kg/m2.Applied in minimum of 2 coats.
• If the coating is 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®-311 (AE). 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.

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