For sealing water bearing and dry cracks and joints, or creating a watertight curtain behind a structural envelope.

Concrete Crack Repair Products

Waterproofing Injection

Structural Injection

Other Sika structural strengthening solutions

FAQs

What are some application considerations, such as injection pressure and conditions?

Sika recommends using low injection pressures (around 300 psi / ~20 bar) for adequate crack filling; higher pressures aren't more effective and may be harmful.Certain products can be injected with either one-component or two-component pumps depending on pot life and mixing needs.

Can you explain the difference between PU injection foam and PU injection resin?

According to Sika’s guidance:
PU Injection Foams react with water and expand upon contact, making them ideal for active leaks or damp joints.
PU Injection Resins, in contrast, don’t foam on contact with water. They cure to seal cracks durably while remaining slightly flexible—better suited for dry or damp cracks without continuous water flow.

Which types of resins does Sika offer for crack injection?

Sika are a leading construction chemical supplier and offer a full range of crack injection products for most applications.

What’s the difference between waterproofing injection and structural injection?

Waterproofing Injection targets water-bearing cracks, creating a watertight seal.Structural Injection focuses on reinforcing structural integrity by filling cracks and voids to restore load-bearing performance.

What is Sika’s crack repair and injection resin used for?

Sika's products can be used to seal water-bearing and dry cracks and joints in concrete, and for establishing a watertight barrier behind structural envelopes. It falls under both Waterproofing Injection and Structural Injection categories.