What types of construction sealants are available?

Construction sealants include polysulphide, polyurethane, silicone, and MS-polymer types. Polysulphide suits below-grade joints, polyurethane (like Sikaflex) suits above-grade movement joints, silicone suits glazing and facades, and MS-polymer suits multipurpose applications.

What is the difference between a sealant and a filler?

A sealant is a flexible, waterproof compound that accommodates joint movement without cracking. A filler is a rigid material used to fill static gaps where no movement is expected. Expansion joints and facade joints require sealants, not fillers.

How do I choose the right expansion joint system?

Choose expansion joint systems based on movement capacity, traffic loading, exposure type, and whether the joint is in a wet area. Shallow slab joints use foam backer rod with sealant. Structural joints in bridges and car parks use metal cover plate systems.

Construction Sealants & Expansion Joints

Seal every joint against water, air, and dust with construction sealants rated for Indian temperature extremes, from Rajasthan summers to Himalayan winters. This collection includes 31 products for structural joints, glazing, facades, and general-purpose gap filling.

Choose from polyurethane sealants (single and two-component) for high-movement expansion joints, polysulphide sealants for fuel and chemical resistance, neutral-cure silicone sealants for glazing and curtain walls, and hybrid sealants for multi-substrate bonding. Also stocked: backer rods, polyurethane foam, and sealant guns for professional application.

Top brands include ICFS, Sika, Tremco, and Fosroc, available in cartridges and bulk packs at contractor-friendly prices.

Design a watertight joint: pair sealants with primers for adhesion on porous substrates, waterproofing membranes at junction details, and geotextile tapes for membrane reinforcement at corners.