External Wall Insulation

At InsulationUK, we stock a wide range of external wall insulation products from market-leading suppliers such as Jablite, Kingspan, Ecorend, and Parex, ready for fast delivery nationwide across the UK.

Our solutions for insulating the external face of solid masonry walls or behind rainscreen or masonry facades are ideal for both new build and refurbishment projects. Here’s an the benefits and applications:

1. External Wall Insulation for Solid Masonry Walls:

• Improved Thermal Efficiency: By adding insulation to the external face of solid masonry walls, we significantly reduce heat loss. This helps maintain a consistent indoor temperature, leading to lower energy bills and enhanced comfort.
• Durability and Protection: Insulating the exterior of masonry walls protects the structure from weather-related damage, such as freeze-thaw cycles that can cause cracks and deterioration over time.
• Minimal Disruption: External insulation allows for retrofit projects without the need for occupants to vacate the premises, as the work is done externally with minimal disturbance.

2. Insulation Behind Rainscreen or Masonry Facades:

• Rainscreen Cladding Systems: These systems are designed to provide an additional layer of weather protection by incorporating a ventilated cavity between the cladding and the insulation. This setup helps prevent moisture penetration and allows for any water that does get in to drain away effectively. The ventilated cavity also aids in managing thermal bridging and improving the overall thermal performance of the building.
• Fire Safety: Rainscreen systems can incorporate non-combustible insulation materials, such as Rocksilk® RainScreen Slab, which has a Euroclass A1 fire rating. This enhances the fire safety of buildings, especially important for high-rise structures.
• Enhanced Aesthetics: The outer cladding offers a variety of design options, allowing for a range of textures and colors to meet architectural requirements. This can significantly improve the building's appearance while providing robust insulation.

3. Applications for New Builds and Refurbishments:

• New Build Projects: Insulating the external face of walls during the construction phase can be seamlessly integrated into the building design, ensuring compliance with modern energy efficiency standards from the outset.
• Refurbishment Projects: Retrofitting existing buildings with external insulation is a highly effective way to upgrade thermal performance without major internal alterations. This approach is ideal for improving older buildings that lack sufficient insulation.

Our External Wall Insulation product offering:

External Wall Insulation Boards

Benefits and Applications: External wall insulation boards are crucial for improving the thermal performance of buildings. They reduce heat loss, enhance energy efficiency, and contribute to a comfortable indoor environment. These boards are ideal for both new builds and retrofit projects, providing a cost-effective solution to meet building regulations and achieve lower energy bills.

Brands We Stock:

• Jablite: Known for their high-performance expanded polystyrene (EPS) boards, Jablite's insulation is lightweight, easy to install, and offers excellent thermal performance. Their boards are also 100% recyclable and come with a range of thickness options to suit different project needs.
• Kingspan: Their Kooltherm K5 External Wall Board features premium performance phenolic insulation with a low thermal conductivity. These rigid boards are suitable for masonry walls and can be used in both new and existing buildings.

External Wall Insulation Render Systems

Benefits and Applications: Render systems for external wall insulation provide not only an aesthetic finish but also additional weather protection. They are designed to be compatible with insulation boards, enhancing the overall thermal efficiency of the wall system. Render systems are durable, resistant to cracking, and can be tailored to achieve various textures and colours.

Brands We Stock:

• Ecorend: Ecorend's render systems are environmentally friendly and designed to offer a superior finish. They are easy to apply and provide long-lasting protection against weather conditions.
• Parex: Parex offers innovative render solutions that are ideal for creating energy-saving facades. Their systems are highly approved in the industry for their performance and versatility.

External Wall Insulation Accessories

Reinforcement Mesh: Reinforcement mesh is essential for adding strength and stability to the render system. It helps prevent cracking and ensures the durability of the insulation system.

Insulation Anchors: These are used to securely fix insulation boards to the external walls. They provide reliable support, ensuring the insulation stays in place and performs effectively.

Base Bead: Base beads are used to create a clean edge at the bottom of the render system. They help in maintaining the integrity of the render and provide a neat finish.

Corner Bead: Corner beads protect the edges of external walls and render systems, providing a straight and durable edge that prevents damage and wear.

Box Base Joint Clips: These clips are used to join and secure the base of insulation boards, ensuring a consistent and stable installation.

Hammer Fixings: Hammer fixings are robust fasteners used to attach insulation boards and other components securely to the wall. They are easy to install and provide strong holding power.

Why Choose Us InsulationUK for External Wall Insulation?

We are committed to providing high-quality external wall insulation products from trusted brands like Jablite, Kingspan, Ecorend, and Parex. Our extensive range ensures you can find everything you need for your insulation project, all available for fast delivery nationwide. Trust in our expertise and comprehensive product offering to meet your insulation needs efficiently and effectively.

Frequently Asked Questions about External Wall Insulation (EWI)

1. What is External Wall Insulation (EWI)? External Wall Insulation involves the application of insulating material to the external surface of a building's walls. This helps to reduce heat loss, improve energy efficiency, and protect the building from external weather conditions. External Wall Insulation (EWI) typically includes layers of insulation boards, a basecoat with reinforcement mesh, and a decorative render finish.

2. How does External Wall Insulation (EWI) work? External Wall Insulation (EWI) reduces heat loss through the walls by adding an insulating layer that prevents the transfer of heat. This layer can be made of materials like expanded polystyrene (EPS), mineral wool, or phenolic foam. The insulation helps to keep the building warm in winter and cool in summer by reducing heat conduction, convection, and radiation.

3. What are the benefits of External Wall Insulation (EWI)?

• Energy Efficiency: Reduces heat loss and can significantly lower energy bills.
• Comfort: Maintains a stable internal temperature, improving indoor comfort.
• Condensation Prevention: Warmer walls reduce the likelihood of condensation and dampness.
• Aesthetic Improvement: Enhances the appearance of the building with a range of finishes and colours.
• Increased Property Value: Improves the energy rating of the property, which can increase its market value.

4. How long does it take to install External Wall Insulation (EWI)? The installation time varies depending on the size of the property. Typically, it takes around 5-7 working days for a standard-sized home. Larger properties may take longer.

5. Will I need planning permission for External Wall Insulation (EWI)? Planning permission is generally not required unless the property is located in a conservation area or has specific planning constraints. It's advisable to check with your local planning authority to ensure compliance with any local requirements.

6. What are the costs associated with External Wall Insulation (EWI)? The cost of External Wall Insulation (EWI) can range from £4,000 for smaller properties to over £14,000 for larger homes. The total cost depends on the size of the property, the type and thickness of insulation used, and the complexity of the installation.

7. Are there any grants available for External Wall Insulation (EWI)? Yes, there are various grants available, such as the Energy Company Obligation (ECO) program and the Great British Insulation Scheme (GBIS). These programs offer financial support to homeowners and tenants, particularly those on state benefits or with lower income, to help cover the cost of installing External Wall Insulation (EWI).

8. What is the expected lifespan of External Wall Insulation (EWI)? External Wall Insulation (EWI) systems have a long lifespan, often exceeding 30 years for retrofit installations and up to 60 years for new builds, provided they are maintained properly.

9. Can External Wall Insulation (EWI) be installed on any type of building? External Wall Insulation (EWI) can be applied to a wide range of building types, including solid walls, cavity walls, and various substrates like brick, masonry, and concrete. However, it is essential to assess the condition of the existing walls and choose the appropriate type of insulation.

10. What maintenance is required for External Wall Insulation (EWI)? External Wall Insulation (EWI) systems require minimal maintenance. Regular inspections and occasional cleaning of the render finish can help maintain its appearance and performance. Any damage to the render should be repaired promptly to prevent water ingress.