Waterproofing Joints

Waterproofing Joints – Seal Expansion, Construction & Movement Joints in Concrete, Masonry & More

Water ingress through structural joints can lead to costly repairs, loss of performance, or full system failure. Our joint waterproofing systems are designed to prevent these risks by forming a durable, watertight seal across critical interfaces in floors, walls, and ceilings. These products adapt to changes in moisture, pressure, or movement, making them ideal for expansion joints, cold joints, and pipe entries in waterproofed environments.

From hydrophilic waterstops that swell in contact with moisture, to flexible joint tapes that stretch and move with the structure, our solutions cover both passive and active sealing methods. Injection hoses allow resin to be pumped into joints after construction, providing a backup seal if leaks appear later. For above-ground and buried applications alike, these systems are trusted for their reliability and compatibility with a wide range of waterproofing layers.

These joint treatments are essential for high-risk areas including concrete slabs, podiums, retaining walls, and movement joints. Installation is straightforward with the correct primers, adhesives, and tools, and most systems are supplied in convenient roll lengths, cartridges, or kits for site efficiency. Reinforcement options, adhesive choices, and bond strengths vary depending on the system, but all products are selected for durability and long-term watertight performance.

Whether you are specifying for new construction or retrofitting existing works, our products offer confidence where it matters most, in tandem with our range of waterproofing products. Explore our full category to find reliable, tested solutions that integrate easily with your chosen waterproofing system.

FAQs – Waterproofing Joints

What’s the difference between static and movement joints?

Static joints are fixed and experience little to no movement once cured, such as cold joints in concrete pours. Movement joints are designed to allow expansion, contraction, or shifting between elements - such as those found in slabs, decks, or facade panels. Different waterproofing products are used for each type depending on flexibility and elongation properties.

Can joint waterproofing systems be used below ground?

Yes, many joint systems are specifically designed for use in basements, foundations, and retaining walls where hydrostatic pressure is present. Products such as waterbars and hydrophilic profiles are cast into the concrete or bonded to the joint to create a barrier that resists water penetration from the surrounding soil or groundwater.

How are injection hose systems used in joint sealing?

Injection hoses are embedded within joints during construction and allow for post-construction injection of resin or gel if leaks develop. They are especially useful for complex foundations or tunnel segments where access after curing is limited. Once activated, the resin fills voids and forms a watertight seal inside the joint cavity.

Do I need a primer or adhesive for joint tapes?

Most joint tapes require a compatible adhesive or primer to ensure proper bonding to the substrate. Some are self-adhesive, while others rely on epoxy or polyurethane adhesives to anchor them in place. Always refer to the specific product instructions for preparation, application, and curing times to ensure performance.

Are waterproofing joint products compatible with liquid membranes?

Yes, many joint systems are designed to integrate with a range of building supplies inclusive of liquid-applied membranes, cementitious coatings, and bitumen layers. The overlap between joint protection and surface waterproofing is critical, and most tapes or profiles are embedded into the first coat of membrane, then sealed with a second coat for continuity and strength.