Thermal performance is a huge topic at the moment. It will be essential if we want to achieve ambitious targets like net zero. However, we’ve had an issue with a performance gap for decades. On paper, many designs can deliver impressive performance. But, the end results can underperform. We want to look at this here, then if you want help from a top architect in London, rely on us.
Background
Did you know that there have been goals for the thermal performance of homes in England and Wales since 1965? Initially, the standards weren’t very strict, but in many cases they still weren’t achieved because the focus at the time was to build quickly. There have been several changes since then though, and we’re about to get new ones in the Future Homes Standard. It will mean homes need to be more energy efficient, especially in terms of heating and ventilation.
Why is there a gap?
Although we’ve had several rounds of tighter regulations on energy performance since the 70s, a 2014 report from the Government said there was a consistent gap. Many new build homes did not achieve the level of performance predicted at the design stage.
A number of different factors could be to blame for the performance gap. For example, things like inconsistencies in workmanship and installation can have a big impact. Something small like not installing insulation correctly can be a problem, potentially causing thermal bypass. Different site conditions are a potential issue too. Even if you work with a top architect in London, the assumption at the design stage is everything will be flawless.
Research from 1990 says that one of the major contributing factors is air gaps. The main finding is that a tiny 6mm gap could result in a 150% increase in heat transfer. Therefore, if there are several gaps in different parts of the property, the actual energy performance can be much lower than the goal.
What to do?
The positive here is that more people are aware of the performance gap problem. Crucially, they understand it usually happens because of a series of small failures during the construction phase. So, they can take steps to prevent or minimise it.
A major problem to resolve is fragmentation during the build phase. The 2014 Government report found that, in many cases, there was a lack of clarity and people taking responsibility for energy performance at the various stages of the project. As a result, projects could lack accountability and there could be inconsistency in terms of the quality. The solution is to ensure project teams have good leadership and to determine who is responsible for maintaining standards. You could even choose a reliable architect in London to lead and co-ordinate.
Another thing to look at is the training and competency of project teams. The goal should be to ensure they have the skills and experience to consistency achieve high standards of workmanship, ensuring there are no tiny issues like air gaps or installation problems.
Finally, there is a lot of attention on taking the right approach to building. Crucially, the focus is on the benefits of fabric-first principles. The aim is to prioritise the design of the structure and choice of materials, creating airtight homes with high levels of insulation. You then have a great baseline and can introduce renewable, energy efficient tech like heating and cooling systems.
Design homes and more with a top architect in London
Coffey Architects knows how vital energy performance is. We work to create properties that achieve incredibly high standards. This involves thinking carefully about the designs, materials, tech, site, and much more. We’ll consider all of these elements to make sure the final design will be sustainable and efficient for a long time. Plus, we can help throughout the project if you need us to.
So, get in touch today and start working with a leading architect in London. We’ll go over everything with you, including technical things like U-values.