Sikalastic®-311 (AE)
Sikalastic®-311 (AE) is a cold applied Single component Pitch Modified Hydrophilic polyurethane waterproofing membrane. Suitable for use in hot and tropical climatic conditions.
- Highly elastic and crack-bridging
- One-component - ready to use
- Excellent adhesion on porous and non-porous substrates
- Seamless, fully bonded waterproofing membrane
- High tensile strength
- Resistant to oxidation
- Repair friendly
- Cold applied - requires no heat or flame
- Self priming
- Thixotropic
- Elastomeric
- Moistue tolerant to damp substrates
Usage
- For waterproofing solutions in both new construction and refurbishment projects
- For use as a waterproofing membrane underneath hard landscaping on podium areas
- For the waterproofing of bathrooms, shower rooms, kitchens, Balconies and plumbing rooms beneath hard protection, for example ceramic tiles
- Substructure foundations as a damp-proofing Solution
- Horizontal and vertical applications
Advantages
- Highly elastic and crack-bridging
- One-component - ready to use
- Excellent adhesion on porous and non-porous substrates
- Seamless, fully bonded waterproofing membrane
- High tensile strength
- Resistant to oxidation
- Repair friendly
- Cold applied - requires no heat or flame
- Self priming
- Thixotropic
- Elastomeric
- Moistue tolerant to damp substrates
Packaging
20 L Pail (~22 kg)
Product Details
APPROVALS / CERTIFICATES
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
Composition
Pitch Modified Polyurethane Resin
Shelf life
12 months minimum from date of production if stored properly in original, unopened and undamaged sealed packaging.
Storage conditions
Store in dry conditions in original packaging at temperatures between +5 °C and +35 °C. Protect from direct sunlight and frost.
Density
~1.1 | (ASTM D6937 - 08) |
Solid content by weight
~65 %
Solid content by volume
~85 %
Shore A hardness
~53 | (ASTM D 2240) |
Tensile strength
~1.5 N/mm2 unreinforced | (ASTM D 412) |
Tear strength
~22 N/mm2 | (ASTM D 624) |
Chemical resistance
Sikalastic®-311 (AE) is resistant to de-icing salts, bitumen, alkalis, fresh- and ground water and various chemicals.
Permeability to water vapour
Nill | (ASTM E96) |
Application
Ambient air temperature
+5 °C min. / +40 °C max.
Relative air humidity
5 % min. / 85 % max.
Substrate temperature
+5 °C min. / +60 °C max.
Substrate moisture content
Damp or dry substrate, no standing water
No rising moisture according to ASTM (Polyethylene-sheet)
Curing time
12 h | Touch Dry |
24 h - 36 h | Partial cure (Water-test) |
7 d | Full cure |
Waiting time to overcoating
Before applying Sikalastic®-311 (AE) on Sikalastic®-311 (AE).
Substrate temperature | Relative humidity | Minimum | Maximum 1) |
+10 °C | 50 % | ~4 h | ~24 h |
+20 °C | 50 % | ~2 h | ~24 h |
+30 °C | 50 % | ~1 h | ~24 h |
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.
Consumption
~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.
SUBSTRATE QUALITY
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
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Thinner C immediately after use. Hardened and/or cured material can only be removed mechanically.