When it comes to achieving a strong, reliable bond that stands the test of time, choosing the right sealant and adhesive is essential. Whether you're installing anthracite windows, fitting composite doors, fixing cladding, sealing roof details or tackling general building work, you need a product that delivers outstanding adhesion, long-lasting flexibility and dependable weatherproof performance.

Bond It GBX Next Gen STP Hybrid Sealant & Adhesive has quickly become a favourite among builders, roofers, window installers and DIY enthusiasts thanks to its impressive all-round performance. Combining the strength of a professional construction adhesive with the flexibility of a premium hybrid sealant, GBX is designed to bond, seal and protect across a huge range of building materials.

What Makes Bond It GBX Different?

Unlike traditional silicone sealants or solvent-based grab adhesives, Bond It GBX uses advanced STP (Silane Terminated Polymer) hybrid technology to create an incredibly strong yet flexible bond. Once cured, it forms a durable waterproof seal that resists cracking, shrinking and weathering, making it ideal for both interior and exterior applications.

The Anthracite 290ml version is especially popular for modern homes and commercial buildings, providing a neat colour match around anthracite windows, doors, fascias, soffits, cladding and aluminium frames. Instead of standing out, it blends seamlessly into contemporary installations for a clean, professional finish.

Key Features & Benefits

Bond It GBX has been developed for professionals who demand reliable performance on every job.

• Professional STP hybrid polymer adhesive and sealant
• Exceptional grab strength for secure bonding
• Creates a waterproof, weatherproof seal
• Permanently flexible to accommodate movement
• Excellent UV and weather resistance
• Bonds to most common building materials
• Suitable for internal and external use
• Paintable once cured
• Low odour formula
• Ideal for trade professionals and DIY users alike

Ideal Applications

Thanks to its versatility, Bond It GBX can be used for a wide variety of projects, including:

• Installing anthracite windows and doors
• Sealing window and door frames
• Bonding cladding panels and trims
• Roofing repairs and flashing details
• Guttering and downpipes
• Kitchen and bathroom installations
• Skirting boards, architraves and decorative mouldings
• Timber, brick, concrete, metal, glass, ceramics and UPVC

Whether you're carrying out a new installation or making repairs, GBX provides the strength, flexibility and weatherproof protection needed for a long-lasting finish.

Why Choose Bond It GBX?

Many installers previously relied on separate grab adhesives and silicone sealants. GBX combines both jobs into one high-performance product, reducing the number of cartridges needed while delivering excellent adhesion and sealing performance.

Its ability to withstand rain, UV exposure, temperature changes and everyday movement makes it an ideal choice for UK weather conditions, while the anthracite finish perfectly complements today's most popular window and door colours.

If you're looking for a professional hybrid adhesive and sealant that delivers outstanding performance without compromise, Bond It GBX is a product that's well worth having in your toolbox.