Anti-Crack EWI System | Cement-Free

Our Licatatherm Anti-Crack EWI system is ideal for unstable substrates. The combination of Rasotherm 500 plus and glass fibre mesh provides ultimate crack resistance. This system is also completely cement free. Choose from brick slips, coloured render or resin multi-colour for the decorative finish. With over 700 colours available, you can pick the perfect coloured render for your project. Our EWI systems help improve the appearance and thermal efficiency of properties, reducing overall energy consumption.

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Features

Suitable For Various Substrates
Over 700 Colour Options
Weather Resistant
Protects Against Algae & Mould
Energy Carbon Saving
Breathable
Fully Fire Compliant
Provides Ultimate Crack Resistance
Suitable For New Builds & Refurbishment

Suitable Substrates

Products Required

Cement Board

K5 INSULATION

GREY EPS INSULATION

MINERAL WOOOL INSULATION

EJOT H1 ECO

Mesh

ISOLANTE LG PRIMER

SILOXAN PRIMER

AGGRAPPATNE LG PRIMER

RASO TOP BIO

SILICONE RENDER

ACRYLIC RENDER

SILICATE RENDER

Acrylic Brick Slips

Once laid Acrylic brick slips are indistinguishable from traditional brickwork both a look at and feel. Below is just a small sample of the colours and textures available. We also offer a brick matching service.

Clay Brick Slips

A modern method of construction with a traditional aesthetic. A vast range of slips is available from our network network of suppliers.

Leading italian
manufacturer &
supplier

BBA certified
insulated render
systems

Licata 10 years
products warranty

National insulation
association

Benefits of Anti-Crack External Wall Insulation System

An anti-crack external wall insulation system improves both the durability and efficiency of a building. These systems use a combination of materials like insulation board and glass fibre mesh to create a strong structure that prevents cracking and reduces the risk of moisture damage.

By incorporating high-performance insulation material with external wall insulation systems, homeowners can enjoy lower energy bills and increased comfort. The system significantly reduces heat transfer, making it ideal for improving thermal insulation systems in both modern and traditional buildings.

The Role of Renders in External Wall Insulation Systems

Choosing the right render is important for an effective external wall insulation system. Acrylic render, silicone render, and mineral render are popular for their durability, adhesion, and wide range of colours, ensuring a durable finish for external walls.

Renders also help protect the insulation layer and the underlying substrate from adverse weather. Silicone renders, for example, are water vapour permeable, allowing moisture to escape while keeping the wall dry, thereby enhancing the overall lifespan of the insulation system.

Innovative Techniques for Achieving Seamless Wall Finishes

Licata’s anti-crack render systems use advanced techniques like glass fibre mesh reinforcement to create durable finishes. These meshes work with insulation boards to strengthen the render system, ensuring walls remain crack-free even under extreme weather conditions.

With a wide range of colours available, including over 700 options, Licata’s systems cater to diverse aesthetic needs. Combining acrylic or silicone renders with external wall insulation systems ensures a smooth, durable finish that resists moisture and impact damage, keeping walls looking great for years.

Sustainable Insulation Materials for External Wall Systems

Using sustainable insulation materials like expanded polystyrene (EPS boards) or mineral wool can improve the environmental impact of your project. These materials are non-combustible, lightweight, and suitable for both low-rise and high-rise properties.

Incorporating high-quality insulation boards in EWI systems helps reduce energy consumption and overall energy costs. Paired with acrylic renders, these systems provide excellent thermal performance, keeping homes warm in cold weather and cool during summer.

Improving Energy Efficiency with Advanced Insulation Systems

Modern render systems combine high-performance insulation materials like insulation boards and expanded polystyrene to significantly lower energy bills. These systems are also water vapour permeable, preventing condensation and maintaining a dry, healthy interior.

For properties facing fuel poverty, these systems provide an affordable way to insulate external walls and door reveals. By offering a range of suitable options like loft insulation and surface rendering, they ensure homes are more energy-efficient and comfortable in all weather conditions.

Frequently Asked Questions (FAQs)

1. What makes anti-crack EWI system different from standard EWI?

Licatatherm Anti-Crack EWI system gives extra strength and flexibility where other external wall insulation systems may fail. Using Rasotherm 500 Plus with glass fibre mesh, it creates a reinforced base that resists cracking, even on unstable substrates.

Because it’s cement free, it allows for more natural movement without compromising the finish. This means you can achieve a smooth, long-lasting render on a variety of building types while protecting the insulation layer beneath.

2. Is Licatatherm Anti-Crack system suitable for timber frame buildings?

Yes. Timber frames can shift slightly over time, which can lead to cracks in standard renders. The breathable insulation board and reinforced basecoat in this system work together to keep the external walls stable and intact.

Paired with a silicone render or acrylic render finish, it not only protects the structure from moisture but also offers a wide range of colours to match the style of the property.

3. How long does an anti-crack EWI system last?

When fitted by Licata-approved applicators, this system can perform for decades. The combination of insulation board, reinforced mesh, and weather-resistant render ensures the external walls remain protected from both physical wear and adverse weather.

Keeping an eye on high-traffic areas like door reveals is recommended, but the design is low-maintenance by nature. With the right care, it keeps its appearance and thermal performance for decades.

4. Can this system be used in adverse weather?

Yes. The breathable construction and protective finishes make it well suited to harsher climates. Silicone render, for example, helps shed water while still allowing vapour to escape, reducing the risk of trapped moisture in the insulation.

Whether facing heavy rain, salt air, or strong winds, the anti-crack EWI system is built to protect external walls while maintaining an attractive, durable finish.

5. Will installing an anti-crack EWI system improve my property’s EPC rating?

By adding a high-quality external wall insulation system, you’re reducing heat loss through the walls, which can contribute to a better EPC rating. The insulation board acts as a thermal barrier, helping to keep warmth in during winter and heat out in summer.

With less energy needed to maintain a comfortable indoor temperature, the building’s efficiency improves, often leading to lower energy bills and a smaller carbon footprint.