Sikalastic-311 (AE)

SIKALASTIC-311 (AE) – COLD APPLIED PITCH MODIFIED POLYURETHANE WATERPROOFING MEMBRANE

Description

When it comes to creating a durable, seamless, and waterproof roofing or flooring system, SIKALASTIC-311 (AE) stands out as a game-changer in the world of construction. This advanced, liquid-applied membrane system from Sika offers unparalleled protection against the harshest weather conditions, ensuring your project stays leak-free and structurally sound for years to come.

Application

SIKALASTIC-311 (AE) is a versatile solution suitable for a wide range of applications, making it an ideal choice for both commercial and residential construction projects. Whether you’re working on a new build, renovation, or repair, this innovative product can be applied to various substrates, including:

• Concrete
• Plywood
• Metal
• Bitumen
• Insulation boards

Advantages

Why choose SIKALASTIC-311 (AE) over other waterproofing solutions? Let’s explore the key advantages of this remarkable product:

• Seamless and Flexible: The liquid-applied nature of SIKALASTIC-311 (AE) ensures a seamless finish that adapts to the contours of your substrate, eliminating joints and seams where leaks could occur.
• Excellent Adhesion: This product adheres superbly to a wide range of surfaces, providing a strong and lasting bond.
• UV and Weather Resistance: SIKALASTIC-311 (AE) is highly resistant to UV rays and extreme weather conditions, ensuring the longevity of your construction.
• Low Maintenance: Once applied, it requires minimal maintenance, saving you time and money in the long run.
• Environmentally Friendly: SIKALASTIC-311 (AE) is free from harmful solvents and is environmentally friendly, making it a sustainable choice for your construction projects.

Product Information

Before we dive into the technical specifications, here is an overview of SIKALASTIC-311 (AE) that you should know:

• Product Type: Liquid-Applied Membrane
• Color: Grey
• Coverage: Approximately 1.0 – 1.5 kg/m² (0.04 – 0.06 in thickness)
• Packaging: Available in 20 kg (44 lb) pails

Technical Specifications

For the technical details, refer to the following table:

Property	Test Method	Value
Solids Content	DIN EN ISO 3251	~65%
Tensile Strength	DIN EN ISO 527-3	~1.5 MPa
Elongation at Break	DIN EN ISO 527-3	~200%
Shore A Hardness	DIN EN ISO 868	~50
Permeability to Water Vapor (µ)	EN ISO 7783-2	~1300
Crack Bridging Capability (C)	EN 1062-7	1.0 mm (at -5°C)

Construction Instructions

Note: Before starting the application, ensure that you have read and understood the product’s technical data sheet and safety data sheet. Use appropriate personal protective equipment (PPE) during the application process.

Surface Preparation:

• Surface Inspection: Examine the surface to ensure it is clean, dry, and free from contaminants, dust, or loose particles. Repair any defects or damage as needed.
• Removal of Old Waterproofing: If replacing existing waterproofing, remove it entirely, ensuring a clean and smooth substrate.
• Primer Application: Choose the appropriate primer for your substrate type. Priming is crucial for ensuring strong adhesion. Use Sikalastic®-311 (AE) or other recommended Sikabit primers.
• Primer Drying: Allow the primer to dry completely, typically for a minimum of 3-6 hours, depending on environmental conditions.

Base Coat Application:

• Mix Sikalastic®-311 (AE): Thoroughly mix Sikalastic®-311 (AE) using a low-speed drill and paddle mixer until a uniform consistency is achieved. Ensure there are no lumps or clumps.
• Base Coat Application: Apply the first coat of Sikalastic®-311 (AE) evenly at the recommended thickness (approximately 1.0 – 1.5 kg/m² or 0.04 – 0.06 inches). The aim is to create a smooth, even surface.
• Reinforcement Fleece: While the base coat is still wet, embed Sikalastic® reinforcement fleece evenly into the surface to ensure good adhesion. Overlap the fleece edges by a minimum of 50 mm (2 inches) to create a continuous waterproof layer.

Top Coat Application:

• Mix Second Coat: Mix the second coat of Sikalastic®-311 (AE) as instructed earlier.
• Apply Second Coat: Apply the second coat evenly over the base coat to the recommended thickness. Work systematically to achieve a uniform and seamless finish.

Curing:

• Curing Time: Allow the system to cure for the specified time as mentioned in the technical data sheet. Curing time may vary depending on environmental conditions, typically ranging from 12 to 24 hours.
• Protection during Curing: Protect the freshly applied Sikalastic®-311 (AE) from rain, dust, or any potential damage during the curing period.

Quality Control:

• Inspect for Defects: After the curing period, inspect the entire system for any bubbles, irregularities, or defects. Address any issues as needed.

Final Inspection:

• Verify Waterproofing: Conduct a final inspection to ensure that the Sikalastic®-311 (AE) system provides the desired waterproofing protection. There should be no leaks or signs of water penetration.

By following these detailed construction instructions, you can ensure a successful application of Sikalastic®-311 (AE) for your waterproofing needs. This liquid-applied membrane system will provide you with a durable and reliable waterproofing solution for your construction projects.