Can't find the colour you want? take a look at our Rainbow Custom where we can make ANY colour to order.
Looking for a bargain? check out of Rainbow Clearance stock
Rainbow RAL Coloured Silicone Sealant is a professional‑grade, neutral‑cure silicone designed for high‑performance sealing across glazing, sanitary, construction and façade applications. Colour‑matched to the full RAL palette, Rainbow provides seamless, visually perfect joints with over 60 stocked RAL colours, ensuring an exact match for window frames, cladding, panels and interior finishes.
Formulated with fungicide additives, Rainbow Silicone offers strong protection against mould and microbial growth, making it ideal for kitchens, bathrooms and other high‑humidity environments. It is MEKO‑free, low‑odour and fully compliant with EU safety standards, providing a safer working environment without compromising performance.
With excellent adhesion to metal, plastic, brick, wood and window frames, Rainbow Silicone is suitable for both indoor and outdoor use and delivers long‑lasting, flexible joints that resist UV, weathering and ageing.
Colour‑matched to RAL standards (60+ stocked colours)
Neutral‑cure, MEKO‑free and low odour
Anti‑mould protection for sanitary areas
Excellent adhesion to multiple substrates
Fast curing, high elasticity & movement capability
UV, weather & ageing resistant for indoor/outdoor use
Window and door frame sealing
Kitchens, bathrooms & sanitary installations
Interior finishing and decorative joints
Façade detailing and cladding interfaces
Brickwork, timber, metal and plastic bonding
General construction and refurbishment sealing