C-TEC CT1 Multi-Purpose Underwater Marine Sealant And Adhesive

C-Tec CT1 is a multi-purpose adhesive and sealant for bonding, sealing and repair work across construction, roofing, engineering, installation, maintenance and marine applications. Made with TRIBRID® Polymer technology, CT1 can be used in wet or dry conditions and can even be applied underwater.

CT1 is designed to bond to a wide range of common trade and repair materials without the need for additional fixings in most applications. It can be used as an alternative to wood adhesives, polyurethane adhesives, silicone sealants, sanitary silicone, acrylic sealants and butyl rubber sealants.

Suitable Materials

CT1 bonds to all metals, including lead, as well as glass, mirrors, wood, MDF, polystyrene, fibreglass, tiles, concrete, most natural stones and most synthetic materials. It is also suitable for most plastics, excluding PP, PE and PTFE.

• Suitable for metals, glass, wood, MDF, tiles, concrete and most stones
• Suitable for wet surfaces and underwater applications
• Suitable for marine, boating and salt-water environments
• Suitable for fibreglass and carbon fibre repair work
• Suitable for natural stone without staining or bleed-through
• Not suitable for PP, PE or PTFE plastics
• Not suitable for PP-backed mirrors

Mirror, Stone and Marine Applications

For mirror bonding, apply CT1 in vertical strips. Do not use CT1 on PP-backed mirrors. CT1 can be used on natural stone without bleeding through and is suitable for sealing and bonding work in marine and salt-water environments.

Application Guidance

Before use, store the cartridge at room temperature. Cut the cartridge at the nose, cut the nozzle to the required bead size and apply with a standard mastic gun. Apply CT1 to a clean, degreased surface and finish joints with MULTISOLVE where required.

Curing and Paintability

At 23°C and 50% relative humidity, CT1 has a skin cure time of approximately 25 minutes, with a tolerance of plus or minus 5 minutes. Full cure time depends on bead depth and site conditions. As a guide, a 2-3 mm bead cures in approximately 12 hours, a 3-6 mm bead cures in 12-48 hours, and a 6-12 mm bead cures in 48-72 hours.

CT1 can be painted once fully cured. It is compatible with common water-based paints but is not suitable for alkyd paints. Prior testing is recommended before painting, especially on specialist coatings or unusual substrates.

Colours and Cartridge Size

CT1 is supplied in recyclable 290 ml cartridges and is available in clear, white, black, grey, beige, brown, oak, blue, silver and anthracite. Cartridges must be completely empty and the nozzle removed before recycling.

Safety and Handling

The CT1 Colours excluding silver safety data sheet lists the product as not classified under CLP. EUH208 applies because the product contains Trimethoxyvinylsilane, which may produce an allergic reaction. Use in a well-ventilated area and wear suitable personal protective equipment, including safety glasses and protective gloves.

Common Questions

Can CT1 be used underwater?

Yes. CT1 can be used in wet conditions and underwater, making it suitable for emergency repairs, marine maintenance and salt-water environments.

Can CT1 be used on natural stone?

Yes. CT1 can be used on most natural stones without staining or bleeding through.

Can CT1 be painted?

Yes. CT1 can be painted once fully cured with common water-based paints. It is not suitable for alkyd paints.

What plastics should CT1 not be used on?

CT1 is not suitable for PP, PE or PTFE plastics. It is also not suitable for PP-backed mirrors.

Is CT1 suitable for marine repairs?

Yes. CT1 is suitable for marine and boating maintenance, including salt-water environments, fibreglass bonding and carbon fibre repair work.

Technical Specifications