One clear winner

BT1 is similar to CT1 but is also anti-bacterial and mould-resistant, making it ideal for sealing around baths, sinks, showers, and kitchen worktops. BT1’s formulation prevents black mould growth, which is a common issue in painted and decorated spaces. Unlike traditional sealant and silicones, BT1 is paintable when it has cured, meaning decorators can achieve a seamless finish without worrying about paint adhesion issues. Provides a clean, professional look without the need for additional priming.

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