Grout joint mortar CERESIT CE40 5 kg — flexible, waterproof, Terra 55 shade

CERESIT CE40 5 kg in the Terra 55 shade is a flexible, waterproof grout mortar formulated for filling joints between ceramic, porcelain and natural stone tiles. Supplied as a powdered blend to be mixed with water, this grout provides elastic joint sealing with aquastatic properties suitable for wet and humid environments. The Terra 55 colour offers a warm brown tone for coordinating with a range of tile surfaces in residential and light-commercial settings.

Advantages

The mortar combines flexibility and water resistance to reduce the risk of cracking and staining in both wall and floor applications. Its formulation supports good adhesion to common tile substrates and maintains joint integrity under moderate movement. As a cement-based grout designed for interior and protected exterior areas, it is suitable for zones exposed to splashes and humidity while delivering a consistent Terra 55 colour match.

Suitable for

• Grouting joints between ceramic and porcelain tiles on floors and walls
• Filling joints in natural stone installations where a flexible grout is required
• Wet rooms such as bathrooms, showers and kitchens due to aquastatic properties
• Balconies and other protected outdoor areas with limited structural movement

When it may not be suitable

This grout is not intended for structural gaps, large movement joints or expansion joints where special elastic sealants are required. It may not be the best choice for high-traffic industrial floors requiring extremely hard-wearing, epoxy-based grouts or for continuously submerged installations where products explicitly rated for constant immersion are recommended.

Key specifications

• Form: cement-based powdered grout to be mixed with water
• Pack size: 5 kg
• Shade: Terra 55 (warm brown tone)
• Performance: flexible, waterproof (aquastatic)
• Recommended use: joints between ceramic, porcelain and natural stone tiles
• Application areas: floors and walls, including wet rooms and protected outdoor areas

How to use

Mix the powder with the recommended amount of clean water to obtain a homogeneous, lump-free grout of workable consistency. Apply the mixed mortar into clean, dry joints using a rubber float or trowel, pressing firmly to ensure complete filling. Remove excess grout from tile surfaces with a damp sponge before the material hardens, and perform final cleaning after initial set. Allow grout to cure according to the manufacturer’s instructions before exposing the area to heavy use or continuous moisture.

What to consider before purchase

• Ensure the Terra 55 shade suits your tile colour and test on a sample area if precise colour matching is required
• Confirm joint width and depth are compatible with cement-based flexible grout
• Check whether an epoxy or specialized grout is needed for extreme wear, chemical exposure or permanent immersion

Usage recommendations

For best results, prepare joints by removing old grout and contaminants, maintain recommended water-to-powder ratio, and finish cleaning within the manufacturer’s suggested time windows. Allow adequate curing time before sealing or exposing to moisture; where additional water resistance is needed, consider compatible sealants applied after full cure.