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Explaining External Wall Insulation For Cavity Walls

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Are you considering adding insulation to your exterior walls? If you are already taking measures to make your home more energy efficient, it will save you costs in the long run. This will also help you reduce your own personal carbon footprint, which is becoming increasingly vital as time passes, with future generations' health reliant on our actions now. Is External Wall Insulation on solid walls the same as on cavity walls? We’re here to answer the age-old question.


External Wall Insulation

There are several compelling reasons to use external wall insulation to insulate a solid brick wall. Before the 1920s, all houses were built with a single layer of bricks. Single layer of bricks are ineffective at keeping the house warm. Because there is no cavity to fill, they must be insulated by attaching insulating material to the outside walls – or even the inner walls. This significantly improves thermal resistance and aids in maintaining the property's warmth in the winter while also keeping it cool in the summer.



Cavity Wall Insulation

Properties that are built after the 1920’s are more likely to be constructed with two layers of brick. This leaves a space where insulating material can be injected or added. The transfer of heat through your walls is slowed by cavity wall insulation, so your heating remains inside your property. Effectively allowing you to save a significant amount annually. Therefore the insulation essentially pays itself off over the years.





Installing Both CWI and EWI

Don't assume that just because you have insulated your cavity walls that means you can't insulate it further, cavity walls may be insulated with external wall insulation. External wall insulation is the only comprehensive insulation method, it provides the best U-Value, improves the appearance of the home, and protects the brickwork from the weather. External wall insulation on cavity walls is just as effective, possibly even more effective than your typical cavity wall insulation method. The benefits of installing external wall insulation to your cavity walls comes in many forms. One being that the cavity wall alone can allow moisture to enter and create damp, So having external wall insulation adds additional safety to your walls as moisture is prevented from entering through the walls. Another benefit is its heat retention, if there were previously any cold areas within the cavity wall insulation, the EWI will mitigate the effect by ensuring a warm wall temperature all-round. 


U-Value?

We measure how much heat is saved via the use of the U- value, The U-value signifies the heat lost through a given thickness of a particular material. The lower the U-value the better insulator the material is. Therefore, the lower the U-value the more heat is preserved. 





Buy yours with us today at www.insulationbee.co.uk or speak to one of our friendly staff on 02038839057



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