Sanitary Silicone Sealant CERESIT CS25 Bahama 280 ml — MicroProtect, mold-resistant

CERESIT CS25 Bahama is a sanitary silicone sealant supplied in a 280 ml cartridge with MicroProtect biocidal protection. Formulated for sealing sanitary joints, it creates a flexible, waterproof connection between fixtures and finished surfaces. The product is intended for indoor wet-room applications including baths, showers, sinks and tiled areas where long-lasting, mildew-resistant joints are required.

Advantages

The sanitary silicone provides elastic sealing that accommodates small movements between materials while maintaining water tightness. MicroProtect technology reduces the growth of mold and mildew in the joint, improving hygiene and reducing maintenance. The sealant adheres to typical bathroom substrates such as glazed tiles, ceramics, glass, glazed sanitaryware and many non-porous surfaces, forming a durable, easy-to-clean joint.

Suitable for

• Sealing joints between bathtubs and walls
• Sealing around showers and shower trays
• Sealing gaps around sinks, washbasins and taps
• Sealing tile-to-tile or tile-to-sanitaryware joints in wet rooms and bathrooms

When it may not be suitable

This sanitary silicone is formulated for indoor wet-room and sanitary applications; it is not intended for structural bonding or heavy load-bearing joints. It should not be used on untreated porous substrates where primer is required or on surfaces that continuously absorb water. Compatibility with some plastics, bitumen, or oily/contaminated surfaces may be limited and adhesion should be checked before application.

Key specifications

• Format: 280 ml cartridge
• Type: Sanitary silicone sealant with biocidal MicroProtect
• Application: Indoor sanitary and wet-room joints
• Properties: Elastic, waterproof, mold- and mildew-resistant
• Curing: Acetoxy/neutral (silicone type) — forms a flexible cured sealant
• Color: Bahama (beige tone)

How to use

Prepare joint surfaces by cleaning away dirt, grease and loose material. Ensure substrates are dry and free of contaminants. Cut the cartridge nozzle to the required bead size, load into a caulking gun and apply a continuous bead of sealant into the joint. Tool the sealant within the product’s skin formation time to ensure good contact with both sides of the joint and a smooth finish. Allow the sealant to cure fully according to ambient temperature and humidity before exposure to water.

What to consider before purchase

• Verify color match (Bahama) with tiles and sanitary fixtures.
• Confirm substrate compatibility for non-porous surfaces and check if a primer is needed for specific materials.
• Ensure the 280 ml volume is sufficient for the intended number of joints.
• Check manufacturer guidance for curing time and temperature limits for application.

Usage recommendations

For best results, apply at room temperature on clean, dry surfaces. Tool the bead to ensure full contact and smooth appearance, and avoid mechanical strain on the joint until the sealant is fully cured. Regular inspection and cleaning will help maintain the mold-resistant properties offered by MicroProtect.