Soudal Stay Fresh Sanitary Sealant Premium 310ml

Soudal Stay Fresh Sanitary Sealant Premium is a high-quality acetoxy silicone designed for sealing joints in bathrooms, kitchens, showers and wet rooms. The formula contains a powerful fungicide that prevents mould growth on the sealant surface, keeping joints looking clean for years rather than months. Anyone who has had to scrape out blackened silicone from around a bath or shower tray knows how miserable that job is. This sealant is formulated to avoid that problem entirely.

The sanitary sealant cures to form a permanently flexible, waterproof seal that withstands the constant wetting and drying cycles typical in bathroom environments. It bonds strongly to ceramics, glass, enamel, glazed tiles and most plastics commonly found in sanitary installations. The flexibility allows for the natural movement that occurs as baths and shower trays fill with hot water and expand slightly, then contract again as they cool. Rigid sealants crack under these conditions. Soudal Stay Fresh moves with the joint.

Where Soudal Stay Fresh Sanitary Sealant Performs

This sealant handles the full range of sanitary applications. Around baths, shower trays, sinks, basins and kitchen worktops where they meet tiled splashbacks. It seals the junction between wall tiles and sanitaryware, between shower enclosures and trays, and around waste outlets. Plumbers, bathroom fitters and kitchen installers use products like this daily because a neat, durable seal is what separates professional work from a bodge job.

The anti-mould properties matter most in poorly ventilated spaces. Ensuite bathrooms with no windows, shower rooms tucked under stairs, and basement wet rooms all create conditions where mould thrives. Standard silicone will start showing black spots within six to twelve months in these environments. The fungicide in Soudal Stay Fresh Sanitary Sealant Premium actively resists mould colonisation, which means fewer callbacks and happier customers.

Application and Finish

Available in clear, white and manhattan grey, the sealant suits most bathroom colour schemes. Clear works well where you want the joint to disappear visually. White matches standard sanitaryware. Manhattan grey complements the slate and stone tones popular in contemporary bathroom design. The 310ml cartridge fits standard skeleton guns and provides enough material for a typical bathroom refit with some left over for touch-ups.

Tooling the bead correctly makes all the difference to the finished appearance. Apply steady pressure, cut the nozzle to match your joint width, and tool within the skinning time. A spritz of soapy water on your finger helps achieve a smooth, professional finish. Rushing this step or leaving too long before tooling results in a lumpy seal that looks amateur regardless of how good the sealant itself might be.

Soudal Stay Fresh Sanitary Sealant Premium resists household cleaning chemicals, so it will not degrade when customers scrub their bathrooms with bleach or bathroom cleaner. The acetoxy cure means it has a vinegar smell during application that dissipates within a day or two once fully cured. This is normal for sanitary silicones and indicates proper curing chemistry.