Seal gaps, prevent leaks and finish jobs neatly with our range of Silicone & Sealants, ideal for building, plumbing, glazing and decorating projects. Sealants are essential for creating flexible, watertight seals around joints, edges and connections—helping protect against water ingress, drafts and movement. Whether you’re sealing a bathroom, finishing around windows, or completing general repairs, choosing the right silicone or sealant helps improve durability and achieve a professional-looking finish.
Silicone sealants are commonly used in bathrooms, kitchens, showers and around sinks, providing a flexible, water-resistant seal that stands up to regular moisture. General purpose sealants are ideal for sealing around frames, gaps, joints and external openings, helping improve weatherproofing and reduce drafts. Using quality sealants also helps improve appearance by creating clean lines and tidy edges around fittings and surfaces.
For best results, ensure surfaces are clean and dry, cut the nozzle to the correct bead size, and apply evenly using a suitable sealant gun. Smoothing the bead and allowing correct curing time helps achieve a strong, long-lasting seal.
Shop online today for silicone and sealants with delivery and collection available
Three William Hercock depots in Melton Mowbray, Leicester and Oakham supply trade professionals and DIY customers with building materials, timber and landscaping supplies.
Collect from your nearest yard or have it delivered straight to site with HIAB and Moffett offload.
Whichever branch is closest, you get the same service.
Our depot teams can help you choose materials and work out quantities.