CT1 Sealant and Construction Adhesive 290ml - Black | CT1535106

• TRIBRID® Technology - up to 360% stronger than hybrid polymer
• Bonds on wet surfaces and underwater
• 290ml black cartridge - solvent-free and odourless
• Skin forms in approx. 24 minutes, full cure in 48 hours
• Replaces 7+ separate adhesive and sealant products
• EC1 Plus A+ GOLD® certified - highest indoor air quality rating
• UV-stable black - resists yellowing and fading over time
• Withstands -40°C to +120°C once fully cured
• Made in Britain - voted UK's Number 1 Sealant and Adhesive

CT1 Black 290ml - TRIBRID® Sealant and Adhesive for Any Surface

One Product, Countless Applications:

CT1 Black replaces at least seven separate products - wood adhesives, PU adhesives, silicone sealants, sanitary silicone, acrylic sealants, butyl rubber sealants, and more - from a single 290ml cartridge. Powered by TRIBRID® Technology, it delivers up to 360% greater strength than a traditional hybrid polymer and 250% more elongation, bonding to virtually any material without the need for additional mechanical fixings.

Bonds in Wet Conditions and Underwater:

CT1 Black can be applied directly onto damp surfaces and will bond effectively even when submerged underwater - a performance level no standard silicone or acrylic sealant can match. Skin formation takes approximately 24 minutes, with full cure achieved within 48 hours under standard conditions. Cure time varies with temperature, humidity, and joint thickness.

Certified Safe for Indoor and Food-Adjacent Use:

CT1 is 100% VOC-free and contains no petrochemicals or solvents, making it completely odourless during application. It holds the EC1 Plus A+ Indoor Air Comfort GOLD® certification, is approved by NAAF (Norwegian Asthma and Allergy Association), and carries ISEGA certification for conformity to food preparation standards. Once cured, it operates reliably between -40°C and +120°C and can be overpainted with most water-based paints.

Durable, UV-Stable, and Long-Lasting in Black:

The black colour is UV-resistant and retains its depth over time - it will not yellow or fade as many lesser sealants do. CT1 is also resistant to fungal and bacterial growth, vibration, and movement, making it a reliable choice for roofing, marine repair, construction joints, and general maintenance tasks. Each cartridge is supplied in eco-compliant packaging made from 80% recycled materials.

Shop our full Painting & Decorating range from Heavins.ie, with delivery available across Ireland.

Key Features

TRIBRID® Technology - up to 360% stronger than traditional hybrid polymer sealants.
Bonds underwater - applies on wet and damp surfaces with no loss of adhesion.
Solvent-free and odourless - 100% VOC-free, safe for indoor use.
EC1 Plus A+ Indoor Air Comfort GOLD® certified - highest indoor air quality rating.
NAAF approved - certified by the Norwegian Asthma and Allergy Association.
ISEGA certified - conforms to food preparation area standards.
Replaces 7+ product types - adhesive, silicone, acrylic, butyl rubber, and more in one tube.
UV and colour stable - black stays black, resists yellowing and fading.
Service temperature - remains stable from -40°C to +120°C once cured.
Eco-friendly cartridge - made from 80% recycled materials.
Voted UK's Number 1 Sealant and Adhesive - by independent survey.
Made in Britain - registered with the Made in Britain organisation.

Specifications

• Brand: CT1 (C-Tec)
• Colour: Black
• Volume: 290 ml
• Technology: TRIBRID®
• Skin Formation Time: Approx. 24-25 minutes
• Full Cure Time: 48 hours (standard conditions, 23°C, 2-3mm joint)
• Application Temperature Range: 5°C to 35°C
• Service Temperature (cured): -40°C to +120°C
• Shore A Hardness: 60 ±5 (DIN 53505)
• Joint Classification: Class 20HM (ISO 11600)
• Tensile Strength: Up to 360% stronger than traditional hybrid polymer
• Elongation: 250% more flexibility than traditional hybrid polymer
• VOC Content: 0% (100% VOC-free)
• Solvent-Free: Yes
• Paintable: Yes - water-based paints only (not suitable with alkyd/oil-based paints)
• Bonds On: All metals (including lead), glass, mirrors, wood, MDF, polystyrene, fibreglass, tiles, concrete, most stones, most plastics and synthetic materials
• Not Suitable For: Polyethylene (PE), Polypropylene (PP), PTFE
• Certifications: EC1 Plus A+ Indoor Air Comfort GOLD®, NAAF Approved, ISEGA Certified, BS EN ISO 8339:2005
• Cartridge Material: 80% recycled materials
• Weight: 529 g (approx. 0.53 kg)
  

What's Included in the Box

• 1x CT1 Black 290ml Cartridge
• 1x Nozzle

We are pleased to offer FREE delivery on orders over €499.00 to anywhere in the Republic of Ireland and Northern Ireland, and our Click & Collect service is FREE on all orders.

All items are shipped from the Athlone Warehouse in Co. Westmeath, Ireland so no import duties apply to the island of Ireland.

Delivery Costs to Republic of Ireland are €6.99 for orders Under €499.00

Same Day Dispatch €9.99
Orders placed before 12pm are dispatched the same working day, helping your items reach you sooner. Excludes bulky items.

Large Bulky Items
Please be aware that large, bulky items (large appliances, white goods, etc.) have a delivery charge of €39.99 for bulky items or €59.99 for extra bulky items to ROI

- We are now delivering to Northern Ireland with all delivery costs equal to the Republic of Ireland.

View our full Delivery & Collection information

Due to our valued customer feedback, we have updated and improved our Returns Policy.

We now offer an exhange or refund on goods purchased online, and returned 14 days after purchase. 

View our Full Returns Policy