Free UK delivery on orders over £40

Sealants & Silicones

(10 products)

Electro South West Ltd is your one-stop destination for professional sealants and silicones. Browse our extensive range of sealing and bonding solutions spanning every trade application—from the legendary, all-surface CTEC CT1 and heavy-duty Pink Grip to sanitary silicones, decorators' caulks, and everything in between. We stock everyday site essentials alongside advanced, waterproof formulations, all at competitive trade prices. Every order is backed by our expert service and reliable UK delivery.
    View as

    A flawless finish and a durable build rely on superior bonding and watertight seals. At Electro South West Ltd, our comprehensive collection of professional sealants and silicones provides the high-performance chemistry required for secure construction, sanitary sealing, and heavy-duty site repairs. We proudly stock industry-leading formulations that tradespeople trust, ensuring you have the right tube for the job, no matter the conditions.

    Our inventory features powerhouse products like the revolutionary CTEC CT1, an advanced sealant and adhesive that can be applied even underwater, alongside the trades' favourite Pink Grip for unbeatable, instant-grab structural bonding. Beyond these heavy hitters, we supply a full spectrum of specialized chemicals, including high-modulus polyurethanes for flexible expansion joints, anti-mould sanitary silicones for pristine bathrooms, and acrylic decorators' caulk for a clean, paintable finish around skirting boards and architraves. To ensure precise, mess-free application every time, we highly recommend pairing these cartridges with our heavy-duty Caulking & Sealant Guns. Build, bond, and seal with absolute confidence.

    Frequently Asked Questions

    Why is CTEC CT1 so popular among professional tradespeople?

    CT1 is unique because it acts as both a universal adhesive and a highly flexible sealant, effectively replacing the need to carry multiple different tubes. Its most famous feature is its ability to bond successfully to almost any surface (including glass, metal, wood, and fiberglass) and it can even be applied directly underwater or in the pouring rain without losing its bond or shrinking.

    Can I use Pink Grip to seal around a bath or shower tray?

    No. Pink Grip is a high-strength, solvent-based gap-filling adhesive designed specifically for structural bonding (such as fixing heavy skirting boards, dado rails, or wall battens). It is not designed to be a waterproof surface sealant. To seal wet areas like a bath or shower, you must use a dedicated sanitary silicone, which contains powerful fungicides to resist mould and remains permanently flexible.

    Can I paint directly over standard silicone sealant?

    No. Standard silicone sealants are designed specifically to repel water, which means both water-based and oil-based paints will simply bead up and slide off the cured surface. If you need to paint over a sealed gap (such as the join between a timber door frame and a plastered wall), you should use an acrylic-based decorators' caulk, which is specifically formulated to be fully paintable once dry.