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CRYSTON IW+

Crystalline Waterproofing System Integral Additive. For Concrete In Dry Powder Form

Permeability reducing; chloride ion penetration & migration reducing admixture for concrete with crack bridging abilities till 500 microns.

COLOR & TEXTURE: Light Grey Powder

APPLICATION AREAS :

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Most suitable for sub-structures and water retaining structures.

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Recommended for usage in high salinity and toxicity environments for increasing durability of RCC

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All types of RCC structures.

• CRYSTON IW+ is to be added directly to the concrete mixer during batching.

• The product can be added at any time during the batching process. However, the addition time may affect plastic properties. Trial batches are recommended.

• If being batched into transit mixers, allow the product to thoroughly mix at medium/high speed for ten minutes prior to placing.

• If superplasticizers are to be used, they should be added normally after the addition of CRYSTON IW+ in the mix.

• CRYSTON IW+ improves flow, pumpability and placement properties of plastic concrete. Best results are achieved if the concrete mix is placed within 45 minutes from time of batching After 45 minutes, concrete may experience slump loss. Adjust slump with superplasticizer following manufacturers’ instructions. Do not add water to increase workability.

• CRYSTON IW+ can have minor effects on the initial and final setting times of the concrete. Adjust your finishing or stripping schedule accordingly.

• CRYSTON IW+ greatly improves internal curing and helps reduce drying shrinkage and crazing cracks. However, the product is not a replacement for proper curing procedures. Wet cure the concrete with a fog mist spray, sprinkler, or wet burlap for at least five days. Protect from rain, direct sunlight, or excessive wind.

PROPERTIES STANDARDS VALUE
Reduction in
water permeability		 As per DIN 1048 50% to 90%
Increase in
compressive
strength		 As per IS 516 0% – 5%
Drying
shrinkage
reduction		 As per DIN-157-08 Up to 40%

Recommended dosage – 0.8 to 1.2 % by weight of binders for optimum performance. Trials should be carried out to adjust dosage for desired performance. Maximum dosage ideally should not exceed 2.0 % by weight of binders.

SHELF LIFE

12 months when stored in dry conditions in original unopened packaging.

STORAGE

Storage above 35°C and humidity above 50% may reduce shelf life and product performance.

PACKING

Standard Pack Size
25 kgs lined HDPE bags

Health & Safety Precautions

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Cementitious product hence contact with skin may cause irritation.

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Avoid skin contact by using protective gloves. If any contact occurs, wash thoroughly with soap and water.

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Should not be inhaled. It is advisable to use protective respiratory mask of good quality while handling, pouring, and mixing the powder.

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Avoid contact with eyes by using proper eye protection. If such contact occurs, rinse thoroughly with clean water. If any uneasiness persists, seek medical advice.

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If mistakenly ingested, seek medical advice.

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Refer to MSDS for further instructions and precautions.

Cryston IW+ – Crystalline Waterproofing Additive for Long-Term Concrete Protection

Have you ever seen water seep through what should be solid concrete? Cracks, damp patches, and long-term structural damage are all signs of poor waterproofing. That’s where Cryston IW+ comes in.

Cryston IW+ is a crystalline waterproofing additive designed to be blended directly into your concrete mix. Once added, it forms millions of microscopic crystals that grow within the concrete matrix, blocking water pathways permanently.

This isn’t surface-level waterproofing. This is waterproofing from within, making your structure more durable, resilient, and maintenance-free.

Key Benefits :

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Internal waterproofing – no need for surface membranes or coatings

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Self-healing cracks up to 0.4mm with crystal regrowth

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Enhanced durability against water, chemicals, and aggressive environments

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Compatible with all concrete grades and mixes

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Minimizes long-term repair costs and structural risks

How Does Crystalline Waterproofing Work?

The secret lies in crystalline technology. When Cryston IW+ is mixed into wet concrete, it reacts with water and unhydrated cement particles to form insoluble crystals. These crystals fill pores, capillaries, and micro-cracks, creating a permanent waterproof barrier inside the concrete.

Even if future water enters, the crystals reactivate and regrow to seal new cracks. That’s what makes Cryston IW+ one of the best concrete waterproofing products available for B2B applications.

Where Can You Use Cryston IW+?

Cryston IW+ is trusted across a wide range of structural applications:

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Basements & Foundations

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Water Tanks & STPs

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Roof Slabs & Terraces

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Precast Elements & Rafts

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Tunnels & Underground Structures

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Bathrooms, Lift Pits & Utility Areas

Frequently Asked Questions

No. Cryston IW+ is a waterproof concrete additive—it works by becoming an integral part of your concrete, unlike surface-applied membranes or sealants.

Because it becomes part of the concrete itself, the waterproofing is permanent and even reactivates in the presence of water.

Yes, because it eliminates the need for extra waterproofing layers or labour-intensive surface coatings. Add it to your concrete and move forward with confidence.

Trusted by Engineers – Proven on Site.

From commercial buildings to infrastructure projects, VAC Buildcare’s waterproofing solutions are engineered to last. Cryston IW+ is the go-to solution for project engineers, architects, and contractors who need fail-proof crystalline waterproofing that works in the real world, not just on paper.

Looking for the Best Concrete Waterproofing Products?

We don’t just supply chemicals, we provide end-to-end waterproofing systems tailored to your site. Ready to build leak-free, future-ready structures?

Contact Us for a free site inspection or personalized product consultation.

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