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Why is EWI the Future?

The market for external wall insulation in the UK has rapidly expanded over the last few years, with more and more homeowners becoming aware of the process as a solution to energy efficiency. There are some out there who are skeptical about the future for external wall insulation, with negative doubts towards the technology and the reliability of retrofitting.

In this blog post we thought we would talk a little bit about why we think that external wall insulation has a long future ahead!

New Build Properties

These days, more and more people are worrying about the pros and cons of investing in new builds. The UK housing stock is rapidly growing, and the quality of newly built houses are under scrutiny from potential buyers and the media. While today’s new builds must achieve the regulatory U-values for a property, some homeowners are reluctant to invest in newly built homes due to concerns surrounding the quality of build, static resale values for at least five years and premium prices.

The appeal of investing in a quality older property, and instead spending the money on doing it up and improving its energy efficiency in other ways (and consequently improving its value) is an appealing choice for many homeowners. Among one of these methods of improvement is external wall insulation.

Growing Interest in Passivhaus Standards

EWI can contribute to passivhaus standards which is becoming a new trend for building design. Awareness of the passivhaus building style is gradually growing within the UK, with environmentally aware homeowners becoming more and more intrigued about how this level of insulation might be mimicked.

Enter external wall insulation – a way of improving the energy efficiency standards of a property by simply retrofitting it to the existing building. EWI may not make your home a Passivhaus, but it can certainly work wonders on dramatically improving your U-values and energy output.  

Large Quantities of Solid Wall Properties

To this day there are approximately 9 million solid wall properties in the UK. This means that 9 million homes do not have adequate insulation and are therefore functioning inefficiently.  External wall insulation is the best solution in these circumstances, since internal wall insulation simply doesn’t have the same high performance results.

Rising Energy Prices

Energy prices go up by around 5% each year. As household bills become more expensive, heating the home with traditional heating methods will become more and more costly. People are therefore better off focussing on effective insulation to combat the need to excessively heat the home and rack up the pricey energy bills.

Growing Technology

Because external wall insulation is a growing construction process, the current technology is extremely up to date and is only getting more advanced. The effectiveness of the system will only keep improving and here at EWI store we hope to keep growing with it. Take for example the groundbreaking thin coat render systems, including silicone render technologies that provide unbeatable hydrophobic properties.   

EWI is also growing in a appeal to those who may not have ever considered anything of the sort – at the beginning, there were worries that the EWI would ruin the external walls of the property, when in actual fact it protects them against weathering. There has also been advances in research about different substrates and the best materials for them. For example timber frame properties need to breathe, therefore breathable materials (e.g. wood fibre insulation) are really on the rise.

The continued visual and aesthetic appeal of EWI is also of interest to homeowners. There are now many cases where EWI has vastly improved the look of the property and the technology behind this is continuously developing. Take for example our Acrylic brick slips and our wood effect render. The wood effect render is actually a really clever way of mimicking timber beams without the hazard of the wood rotting or posing a fire risk.

UK Housing Situation

As the UK housing crisis continues, people are more concerned about investing in the longevity of their homes – ensuring that they last and that they are saleable. Investing in EWI is a great way to extend the life of a property because, as previously mentioned, it protects the external walls of the property. It can also improve the value of the property due to higher EPC ratings, lower U-values, lower energy bills and increased visual appeal.

Increased Awareness of Climate Change

The media and the government are currently paying a lot of attention to climate change and how we can combat this. As a result, there has been a huge surge in people who are keen on making a difference in combating climate change and saving energy. This is encouraging growth in interest in energy saving from an environmental perspective as well as money-saving. Homeowners are keen on external wall insulation because with EWI the need to heat their homes is decreased dramatically, thereby reducing their carbon footprints.

Changing Energy Efficiency Standards

Required energy efficiency standards are going to get a lot tighter as climate change continues. 2018 has brought the landlords minimum energy efficiency standards (MEES) regulations. The main aim of the MEES is to prevent fuel poverty by ensuring that rental properties have an EPC rating at a minimum of E.

This is the first in energy efficiency regulations and we hope that more regulations such as these will be brought forward to help cut down on inefficient energy usage.

Growing Awareness

Excitingly, general awareness of external wall insulation is growing, and as a result more and more installers are offering external wall insulation install jobs. Installing EWI is a complicated procedure and needs to be done properly. We recommend that you always choose trustworthy installers to carry it out, and we have a database of trusted installers all over the country who we can point you in the direction of. So get in touch and we can pass you on!

Stay tuned for more blog content! We upload every Tuesday and Thursday all about our EWI and render systems, answering FAQ’s and giving full and detailed product guides.


One thought on “Why is EWI the Future?

  1. A very simple effective message well written and hope that the sector embraces change to comply with current standards as pas2030. There has been a lot of scepticism not helped by government intervention in raising of standards. 30 years ago this activity was a very specialist market, now commoditised by funding, resulting in standards dropping. Installed correctly EWI can last decades, and still the most commercial solution to the UK’s poorly insulated homes

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