Sika Sikalite Powdered Waterproofing Admixture, 1kg

Sika Sikalite Admixture

The Sika Sikalite Waterproofing Admixture is a specialized powdered additive engineered to reduce the capillary absorption of moisture in cement-based mortars, renders, and mass concrete. This chloride-free chemical agent integrates directly into the mix to block pores and improve the overall durability of the structure. It is compatible with all types of Portland cement and is widely used for both interior and exterior applications where water resistance is a primary requirement.

Built for the Job

Site supervisors and masonry contractors utilize this powdered agent to enhance the performance of cementitious mixes in damp environments. The chemical action works by lining the internal pores of the mortar with a water-repellent film, which significantly slows down the rate of water penetration through capillary action. This is particularly useful for external wall renders that face heavy driving rain or for floor screeds in wet areas like bathrooms and laundries. By reducing the permeability of the material, the additive also helps minimize the risk of efflorescence and frost damage in colder climates.

• Waterproofing of external cement renders and plasters.

• Addition to mortar for bricklaying in damp-proof courses.

• Moisture reduction in floor screeds and mass concrete.

Product Highlights

Chloride-Free Composition

The formula does not contain chlorides, ensuring it will not promote the corrosion of steel reinforcement or wall ties within the structure.

Enhanced Workability

• Improves the plasticity of the wet mix for easier trowel application.
• Reduces the amount of gauging water required to achieve a specific consistency.

Technical Specifications

What’s Included

• 1 x 1kg Bag of Sikalite Powdered Admixture

On-Site & Workshop Notes

• Always mix the powdered additive with the dry cement and aggregates before adding water to ensure even distribution throughout the batch.

• Do not exceed the recommended dosage, as over-dosing may result in extended setting times or reduced final compressive strength.

• Ensure the substrate is properly prepared and free of loose debris before applying the treated render or mortar.

• Store in a cool, dry location in original sealed packaging to prevent clumping from atmospheric moisture.