External Insulation
Professional rendering of your property not only shields it but also creates a luxurious finish, increasing its value.
External wall insulation (EWI) is a cornerstone of our insulation solutions at Prestige Houses, offering a multitude of advantages for homeowners in Hampshire and Dorset. Our primary insulation material is Expanded Polystyrene (EPS), renowned for its high performance and cost-effectiveness. When applied to a building, EPS significantly enhances its thermal properties by improving U-values and reducing the risks associated with water penetration and condensation.
EPS boards, available in a variety of thicknesses ranging from 20mm to 200mm in 10mm increments, are versatile enough to be used on masonry, system-built properties, and in conjunction with our EWI Pro render systems. Designed for external application, these boards are affixed using EWI Pro adhesive and mechanical fixings, ensuring a secure and long-lasting installation.
The integration of EWI into your home provides tangible benefits such as increased energy efficiency, enhanced comfort, and improved aesthetics. By creating a protective barrier around your home, EWI minimises heat loss during winter and heat gain in summer, resulting in lower energy bills and a consistently comfortable living environment. Additionally, EWI acts as an effective sound barrier, reducing external noise pollution and promoting a quieter indoor atmosphere.
Beyond these immediate benefits, our EWI solutions contribute to environmental sustainability by reducing your home's reliance on heating and cooling systems, thereby lowering carbon emissions. This eco-friendly approach aligns with the preferences of environmentally conscious homeowners seeking sustainable home improvement options.
At Prestige Houses, we pride ourselves on delivering superior EWI solutions tailored to meet the specific needs and preferences of our clients. With our expertise in handling complex EWI projects, we ensure meticulous planning, precise execution, and the use of high-quality materials to guarantee optimal performance and durability. Our comprehensive services, from initial site assessments to final installation, are designed to exceed client expectations at every stage.
Our commitment to customer satisfaction is unwavering, underpinning our reputation as a trusted leader in the field of external wall insulation. We uphold values of clear communication, transparency, and professionalism throughout the entire process, keeping our clients well-informed and engaged at every step. Whether you aim to enhance your home's energy efficiency, improve its curb appeal, or increase its resale value, you can count on Prestige Houses to deliver bespoke EWI solutions that align perfectly with your goals.
Improve External Appearance
An EWI system features a render finish that boosts both the functionality and outward look of a building. Our renders are available in a diverse array of textures and colors, providing a distinctive finish that is durable over time.
Enhance Facade Durability
Our premium range of renders is extremely flexible, breathable, and hydrophobic. These attributes contribute to enhancing the longevity of the building's facade by reducing the likelihood of cracking, organic growth, and damp problems.
Improve Thermal Comfort
Thermal comfort means maintaining a pleasant temperature inside a building regardless of external weather conditions. With EWI, we can ensure that the interior of your property remains at an ideal temperature for optimal comfort, regardless of the weather.
Minimise Heating Costs
By retaining heat within a building, energy costs can be significantly lowered. A four-bedroom detached house can anticipate saving around £455 per year on energy expenses by installing 90mm of EPS on a solid brick wall.
Extend Building Longevity
As EWI envelops the entire exterior of a building, it not only prevents heat loss but also guards against water penetration. The render serves as a weather-resistant barrier for the building, consequently extending its longevity.
Reduce CO2 emissions
With external wall insulation, the reliance on gas and electricity usage is reduced throughout the year. Consequently, buildings with EWI contribute to environmental conservation by consuming less energy.
Our Materials
EPS Insulation
The focal point of our external wall insulation systems is Expanded Polystyrene insulation (EPS).
EPS insulation is a high-performing and cost-efficient insulation material. When installed on a property, EPS very easily upgrades the thermal properties of a building – improving U-values and reducing the risk of water penetration and condensation.
EPS boards can be used on masonry and system-built properties as well as with our range of EWI Pro render systems. It is designed to be applied externally using EWI Pro adhesive and mechanical fixings.
EWI Pro EPS boards are available in a broad range of thicknesses (from 20mm to 200mm – going up in 10mm increments).
Advantages of EPS Insulation
Great value
Easy to work with
Lightweight but durable
Dense material – low thermal conductivity
Low moisture absorption
Non-degrading
Technical Details:
Thermal Conductivity: 0.032W/(m2K)
Reaction to Fire: Class E
Size of boards: 1200mm by 600mm
Composition: Expanded polystyrene, graphite
Thicknesses Available: 20mm, 30mm, 50mm, 70mm, 90mm, 100mm, 150mm, 200mm.
Mineral Wool Insulation
Rockwool insulation features as part of our Mineral Wool insulation system, offering both improved thermal conductivity and acoustic insulation.
One of the most appealing aspects of this type of insulation is that it offers outstanding fire resistance, because Mineral Wool is non-combustible; it’s therefore ideal for providing firebreaks when insulating high rise buildings.
This is because the insulation itself acts as a fire barrier, helping to slow down the rate of flames without contributing to the fire.
Mineral Wool systems are also a premium system because of they offer a high level of breathability; the presence of fibres and moisture repelling compounds within the material help to wick moisture through and away from the substrate.
Mineral Wool insulation boards are made up of two different density layers of wool – the outer layer being the most dense and therefore providing a firm surface on which to apply the basecoat and render.
Rockwool external wall insulation boards require metal pin mechanical fixings as well as the EWI-225 Premium Adhesive to tie them to the wall (a minimum of 7 fixings are required per m2).
Advantages of Mineral Wool Insulation
Breathable
Non-combustible
Unparalleled thermal performance
High acoustic insulation performance
Technical Details:
Thermal Conductivity: 0.036W/(m2K)
Reaction to Fire: Class A1 (non combustible)
Size of boards: 1200mm by 600mm
Composition: Mineral Wool
Thicknesses Available: 70mm, 100mm, 110mm, 150mm, 120mm, 200mm.
XPS Insulation
Known for its high compressive strength and excellent moisture resistance properties, XPS insulation is a closed-cell foam insulation board that offers fantastic thermal capabilities.
Suitable for use on a wide variety of buildings for a range of applications, XPS is popularly used for extending concrete window sills or insulating below the DPC due to its water and impact resistance, it is also used for extending concrete window sills or providing insulation backing where EPS is not suitable to use.
XPS is excellent for use on timber, masonry and system build properties, and provides a high-performance base for a wide range of rendering systems as well as brick slips and tile hangings.
The XPS insulation should be fixed to the substrate using a quick-drying adhesive such as the EPS Basecoat Adhesive.
Advantages of XPS Insulation
Closed-cell structure
Reduces the risk of water penetration
Compact and robust
High compressive strength
Lightweight but durable
Easy to work with
Technical Details:
Thermal Conductivity: 0.034W/(m2K)
Reaction to Fire: Class E
Size of boards: 2485 mm by 585mm
Composition: Closed-cell extruded polystryene foam
Thicknesses Available: 30mm, 50mm, 100mm
Wood Fibre Insulation
Wood Fibre insulation operates as part of our most sustainable system.
It is a highly breathable insulating material and provides an outstanding level of thermal comfort within the home;
fibre board insulation offers superior solar protection, preventing the building from gaining too much heat during the warmer months while also preventing heat loss during winter.
Not only does this type of insulation offer superlative thermal properties, it also has the credential of being an environmentally friendly material; the insulation boards are made from waste shavings of environmentally sourced timber from sustainable forests (the Wood Fibre insulation that we offer is NaturePlus certified!).
The insulation will regulate the passage of water through the building structure, allowing for the diffusion of water vapour and preventing any moisture build-up within the property and the EWI system.
This contributes towards a dry and healthy building structure. The insulation boards fit together with a tongue and groove shape to ensure that thermal bridges are reduced.
When used in conjunction with our vapour permeable Silicone Render or a breathable Heritage Lime Render, the Wood Fibre insulation system offers unbeatable performance.
Advantages of Wood Fibre Insulation
Breathable
Sustainable
Excellent thermal performance
Ideal for timber frame properties
High solar protection
Tongue and grooved for ease of installation
Reduces thermal bridges
Contributes to a healthy building structure
Technical Details:
Thermal Conductivity: 0.043W/(m2K)
Reaction to Fire: Class E
Size of boards: 1450mm by 580mm
Thicknesses available: 60mm, 80mm, 100mm, 120mm.
