IDROSILEX Liquid Waterproofing Additive 25kg

Mapei IDROSILEX – Liquid Waterproofing Additive for Cementitious Mortars, Renders & Screeds

Mapei IDROSILEX is a liquid waterproofing admixture formulated to improve the water resistance of cement-based mortars. When mixed with cement, sand and water, it produces a more compact mortar with reduced capillary porosity, helping to limit water penetration through cementitious renders and screeds.

Designed for professional construction and refurbishment work, IDROSILEX is suitable for preparing waterproofing mortars used in basements, garages, underground structures, swimming pools, reservoirs, canals and other applications where improved resistance to water penetration is required.

Key Benefits

• Improves water resistance: Helps reduce water penetration through cementitious mortars.
• Reduced capillary porosity: Produces a more compact mortar than conventional cement or lime-cement mortars.
• Easy to incorporate: Diluted into the mixing water before preparing the mortar.
• Versatile applications: Suitable for waterproofing renders and screeds.
• Suitable for vertical and horizontal work: Mortars can be applied to walls and floors using appropriate application methods.
• For new construction and refurbishment: Suitable for a range of basement, underground and water-retaining structure applications.

Applications

Mapei IDROSILEX is recommended for preparing waterproof cementitious mortars for applications including:

• Waterproofing renders in basements, garages and underground structures.
• Waterproof screeds in below-ground areas.
• Rendering and waterproofing canals and swimming pools.
• Waterproofing reservoirs and cisterns.
• Rendering concrete, brick and stone walls exposed to atmospheric conditions.
• Waterproofing lift wells and underpasses.
• Waterproofing building façades using suitable cementitious render systems.

How IDROSILEX Works

IDROSILEX is a liquid admixture containing special waterproofing agents. It is diluted into the mixing water and incorporated into the cement-and-sand mortar during preparation.

The resulting mortar has lower capillary porosity than conventional cement mortars. When used as part of an appropriately prepared, multi-layer rendering system, it helps reduce the continuity of pores through the mortar and improve resistance to water penetration, including in applications subject to counter-pressure.

Dosage & Consumption

The manufacturer's recommended dosage for IDROSILEX Liquid is:

• 3–5 kg per 100 kg of cement.

The exact dosage should be selected according to the mortar formulation and project requirements. Follow the manufacturer's technical data sheet for the correct preparation and application procedure.

Technical Information

• Manufacturer: Mapei
• Product: IDROSILEX Liquid
• Product type: Liquid waterproofing admixture for cementitious mortars.
• Consistency: Liquid.
• Colour: Transparent green.
• Density: Approximately 1.20 kg/litre at +20°C.
• Dry solids content: Approximately 25%.
• Dosage: 3–5 kg per 100 kg of cement.
• Mixing: Dilute into the mixing water before preparing the mortar.
• Application: Incorporated into cement-and-sand mortars for rendering and screeding.

Important Application Guidance

IDROSILEX is used to produce a rigid waterproofing mortar. It is not a replacement for flexible waterproofing membranes and is not recommended for structures subject to severe movement or deformation that could cause cracking. It should also not be used to waterproof fresh concrete that is still subject to plastic shrinkage.

For effective waterproofing, the mortar must be correctly formulated, prepared and applied in accordance with the manufacturer's instructions. Multi-layer application and appropriate detailing are important, particularly at wall-to-floor junctions and other vulnerable areas.

Always consult the current manufacturer's technical and safety data sheets before use.

Frequently Asked Questions

1. What is Mapei IDROSILEX used for?

IDROSILEX is a liquid waterproofing admixture used to improve the water resistance of cement-based mortars. It is incorporated into renders and screeds for applications such as basements, garages, underground structures, swimming pools, reservoirs and canals.

2. How much IDROSILEX should I use?

The manufacturer's recommended dosage for IDROSILEX Liquid is 3–5 kg per 100 kg of cement. The correct dosage depends on the mortar formulation and application requirements.

3. How do you mix IDROSILEX into mortar?

IDROSILEX Liquid should be diluted into the mixing water before preparing the cement-and-sand mortar. Follow the manufacturer's instructions for the correct dosage and preparation method.

4. Can IDROSILEX be used for basement waterproofing?

Yes. IDROSILEX can be used to prepare waterproof cementitious renders and screeds for basements, garages and underground structures. The finished mortar forms part of a rigid waterproofing system and must be correctly applied and detailed.

5. Can IDROSILEX be used in swimming pools and water tanks?

Yes. The manufacturer identifies waterproof rendering for swimming pools, canals and similar applications as suitable uses. The complete mortar system and construction details must be appropriate for the structure and intended service conditions.

6. Is IDROSILEX a flexible waterproofing membrane?

No. IDROSILEX is a liquid admixture for cementitious mortars. It produces a rigid waterproofing mortar and should not be used as a substitute for a flexible waterproofing membrane where movement or deformation needs to be accommodated.

Buy Mapei IDROSILEX from Clever Shield

Clever Shield supplies professional Mapei waterproofing products and construction materials throughout the UK. We supply solutions for basement waterproofing, damp proofing, concrete protection and construction applications.

Contact our team for product availability, pricing and delivery enquiries.

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