This versatile silicone is specially designed for sealing expansion joints between a variety of surfaces, including porous and non-porous substrates such as concrete, masonry, brick, aluminium, PVC, glass, ceramics, and most plastics. Its durable formulation ensures a strong and lasting seal, making it suitable for both indoor and outdoor use. Ideal for high-humidity areas, this silicone sealant effectively prevents mildew growth, making it a perfect choice for bathrooms, kitchens, refrigeration units, and cold rooms. Its moisture-resistant properties help protect against water damage while maintaining cleanliness and hygiene in food preparation areas and other sanitary environments. The Rainbow RAL Coloured Silicone Sealant is also perfect for conventional glazing and perimeter weathersealing of windows and doors. By creating a tight seal, it reduces drafts, enhances insulation, and improves energy efficiency in buildings. Whether used for sealing or protecting against mildew, this sealant is a reliable solution for all your home improvement needs.