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Telephone: 01606 841398 |  |
Email: Enquiries@kginsulation.co.uk |
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External Wall Insulation
If your house was constructed before 1940 chances are your walls are made up of solid brickwork. The heat lost through this kind of wall is around 45%. Solid Wall OR External Wall Insulation as it is commonly known is a method available that will slow down the rate at which the warm air inside your house escapes through the walls. You can effectively cut your energy bills by as much as 25% using this method and save up to £385 per year.
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The house prior to |
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Solid wall insulation is basically a technique consisting of three layers - an insulator, a bonding agent and cladding with decorative outer layer which can be matched to the existingdecor of your home.
External wall insulation renews the appearance of the house, improve weatherproofing, air tightness and sound resistance.
BENEFITS OF EXTERNAL WALL INSULATION
- SAVE ON YOUR HEATING BILLS The most significant heat loss in your home is through the external walls. This is estimated to be around 45% of the total heat loss, resulting in high heating bills. By insulating your external walls, you can reduce heat loss and significantly cut your heating bills. You could save up to £385 per year on your annual energy bill.
- INCREASED COMFORT LEVELS Your home will warm up more quickly if insulated and you won’t have to keep the heating on for as long to reach a comfortable temperature. Condensation will be a thing of the past and without it less mould growth will occur, leading to a healthier living environment.
- IMPROVED APPEARANCE With the installation of external wall insulation your home will be transformed with a wide range of contemporary or traditional finishes with a choice of textures, colours and finished effects which can be matched to the original decor of the building.
- EASY MAINTENANCE The high performance render finishes used on the system offer excellent durability and protection against rain, UV rays from sunlight and cracking. Our finishes have the colour pigments added during the mixing process which means they never have to be painted, providing you with a low maintenance home.
- EXTERNAL INSUALTION WORKS ARE ALL CARRIED OUT FROM THE OUTSIDE OF YOUR HOUSE. This means, NO internal living space is lost as all the insulation is on the outside walls. NO need to vacate the house whilst works takes place and no need to move furniture and fittings. NO internal redecoration is required.
- INCREASED PROPERTY VALUE With an increased thermal performance and a transformation in its appearance and the value of your home could increase.
- REDUCE YOUR CARBON FOOTPRINT High levels of heat loss also result in a high carbon footprint, by reducing these levels through insulation you will not only be saving money but helping to protect the environment by reducing carbon emissions.
SURVEYING PROCESS
Prior to installation, our fully trained Professional Surveyor will conduct a full ‘no obligation Survey’ on your property to be carried out at a convenient time to fit around your busy schedule. The Survey usually takes approximately 20 minutes.
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| The insulation is applied to the outside of the house |
The Surveyor will firstly check to see if your property is suitable for External Wall insulation by checking that your property has a Solid Wall. Solid walls are mainly made of brick or stone and are found in most houses built around the 1920’s / 1930s. So, if your house dates back to Edwardian, Victorian or Georgian times – and is built of brick or stone – its walls are likely to be solid. The easiest way to tell is from the pattern of the bricks on the outside of your house.
If your home has solid walls, the bricks will tend to be placed head-on and lengthways in an alternating pattern like this. Please insert Solid wall photo from cavity wall insulation page. The Surveyor will check the construction and make up of the walls in your property to evaluate the thickness of insulation required to achieve the correct U Value (this is the rate at which heat can flow through them. The lower the U value, the more slowly heat is lost – and the more money you will save on your fuel bill to keep your home warm)
INSTALLING EXTERNAL WALL INSUALTION
All External Wall insulation is carried out from the outside of your property, meaning less disruption for you.
The usual way of installing external wall insulation includes fastening insulation boards of typical sizes to the wall and supporting it with a cladding finish. The thickness of the boards are in the range of 40 mm to 90 mm and a bonding agent and mechanical fasteners are used to fix them to the wall. The overall width of the insulation will be between 50-150 mm.
K G Insulation uses Rockshield insulation, which is fixed either by a combination of adhesive and mechanical methods using rigid slabs, or by adhesive fix only, using RockShield Facade Lamellas. The Rockshield can be easily cut on site using normal tools.
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The house after External Wall |
The RockShield finish is applied in two coats. The first coat includes a reinforcing mesh to impart strength to the system. The second coat is a decorative finish. A wide range of colour finishes is available.
Materials must not be applied below 5°C or if Protection from rain must be provided until both base and decorative coats have dried. During the winter months, winter grade products are available for use between November and March. These products are suitable for application during cold and humid conditions and have faster drying times. Drying of the finishes is dependent on temperature and relative humidity. Under average conditions this will be in less than 24 hours, but in winter it may be longer.
The RockShield system is available in a range of options, including choice of insulation, thickness of base coat and decorative finish.
FACTS ABOUT EXTERNAL WALL INSULATION
Heat will always flow from a warm area to a cold one. In winter, the colder it is outside, the faster heat from your home will escape into the surrounding air.
Solid wall insulation slows down the rate at which it escapes, keeping as much of it as possible inside your home for as long as possible. How? The Insulation works by coating or filling walls with a layer of material (Rocksheild) that only allows heat to pass through it very slowly. This reduces what is known as the U value of the walls – the rate at which heat can flow through them. The lower the U value, the more slowly heat is lost – and the more money you will save on your fuel bill to keep your home warm.
Solid wall insulation also helps prevent “cold bridging”. Cold bridging occurs when a material that is a good conductor of heat makes a “bridge” between the warm interior and the cold exterior. They are a significant source of heat loss and can lead to condensation and mould forming in buildings. An example of a cold bridge would be the party wall separating two semi-detached homes and spanning the length of the building. Warmth from both homes is conducted along the length of this wall and escapes into the air.
