OB1 Black Multi-Surface Construction Sealant & Waterproof Adhesive
Versatile OB1 sealant bonds metals, plastics & more underwater. Zero VOCs, ISEGA-certified & weatherproof. Ideal for kitchens, pools & roofing.
OB1® Black Multi-Surface Construction Sealant & Adhesive is a versatile, high-performance bonding solution designed for a wide range of applications. Its unique hybrid polymer formula ensures strong adhesion across various materials, including metals (even lead), plastics (PVC & GRP), glass, mirror, polystyrene, fibreglass, and wood. Unlike traditional sealants, OB1® works in wet or dry conditions—even underwater—and contains zero VOCs for an environmentally friendly choice.
Key Features:
- Exceptional Bonding Strength: Maintains flexibility from -40°C to +120°C with 350% elongation.
- Food Safe: Complies with ISEGA standards, making it suitable for kitchens and food prep areas.
- Marine & Pool Approved: Resistant to saltwater and ideal for underwater repairs.
- Weather & Chemical Resistant: UV-stable, fungal-resistant, and perfect for harsh environments.
- Non-Shrinking & Painter-Friendly: Retains its shape after curing and can be painted over.
- Solvent-Free: No isocyanates or VOCs—safe for residential and industrial use.
- Quick Initial Grab: Holds materials like mirrors without additional fixings.
Applications:
OB1® excels in roofing, plumbing, marine repairs, solar panel installations, bathroom sealing, and garden fixture repairs. It bonds lead flashings, seals leaking gutters, and fixes cracked concrete or terracotta—even underwater. Its durability and flexibility make it the go-to adhesive for professionals and DIYers alike.
Free 24 Hour Delivery
Free next-day delivery (UK mainland)
- Kitchen worktops (marble, granite, quartz)
- Marine & underwater repairs
- Swimming pool tile bonding
- Solar panel installations
- Colour: Black
- Material: Hybrid polymer
- Temperature Resistance: -40°C to +120°C
- Elongation: 350%
- Certification: ISEGA (food safe)
- VOC Content: Zero
- Paintable: Yes
- Weight: 518g
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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