What is C2 classification of tile adhesive?

C2 is a classification of tile adhesive according to European standards. C2 tile adhesive is classified as a “improved” or “high-performance” adhesive, which means it has superior properties compared to lower classifications such as C1 or C1T.

The main characteristics of C2 tile adhesive are:

1. Increased bonding strength: C2 adhesive has higher bonding strength than C1 adhesive. This means that it can be used to fix tiles that are heavier or larger than those that can be fixed with C1 adhesive.
2. Improved water resistance: C2 adhesive has improved water resistance compared to C1 adhesive. This makes it suitable for use in wet areas such as showers, swimming pools, and exterior applications.
3. Greater flexibility: C2 adhesive has greater flexibility than C1 adhesive. This means that it can better accommodate movement and substrate deflection, making it suitable for use on substrates that are prone to movement.
4. Improved temperature resistance: C2 adhesive has improved temperature resistance compared to C1 adhesive. This means that it can be used in areas that are exposed to significant temperature fluctuations, such as external walls or floors that are exposed to direct sunlight.

In addition to the standard C2 classification, there are also sub-classifications of C2 adhesive based on their specific properties. For example, C2T adhesive is a subtype of C2 adhesive that has been specifically designed for use with porcelain tiles. Other subtypes include C2S1 and C2F, which have specific properties related to their suitability for use with different types of substrates.

C2 tile adhesive is a high-performance adhesive that offers superior bonding strength, water resistance, flexibility, and temperature resistance compared to lower classifications such as C1. It is suitable for use in demanding applications such as wet areas, exterior installations, and areas with significant substrate movement or temperature fluctuations.