Improving the Thermal Efficiency of a Building
16th October 2018

Building Regulations and Energy Acts for Thermal Efficiency of Buildings

Regulations and standards around a buildings energy performance have tightened significantly recently. Both domestic and commercial buildings have raised their minimum thermal performances that must be met (you can read more about this here). Over recent years, improving thermal efficiency of both domestic and commercial buildings has become a “hot topic”.

There are many ways to improve a buildings thermal efficiency, from increasing insulation to the prevention of cold bridging through cavity closers and thermal barriers. As the UK strives for zero-carbon new-builds and the rise in “passive houses” continues, manufacturers have moved into creating more thermally efficient products and solutions for buildings.

Improving the Thermal Efficiency of a Building

Expanded polystyrene (EPS) is one of the most cost-effective insulative materials on the market that can improve a buildings energy performance. With U-Values as low as 0.030W/m²K, it can significantly improve the thermal efficiency of a building when used as insulation. EPS can be used in various forms for insulation, from bead blown into wall cavities as cavity wall insulation, to formed sheets which, for example, can be cut to fit into specific areas such as within the roof rafters.

How can Molygran help with these changes?

As EPS converters, Molygran specialises in profile cut polystyrene to fit exactly into what the customer requires. Using only the highest quality EPS, Molygran’s insulative products have very low thermal conductivity due to its closed cell structure consisting of 98% air. The durability of EPS also ensures the insulation will last the lifetime of the building as it takes 500-100,000 years to biodegrade.

EPS is a popular material for insulation due to its natural properties, however, when mixed with graphite or carbon, the thermal performance significantly increases. “Grey” or “Black” EPS is used when the lowest U-Values are required as it can reduce the thickness required whilst still retaining its performance.

It is commonly used for cavity closers around door and window frames, for under-floor; wall and roof insulation, and for all other forms of prevention of cold bridging. Window and door manufacturers have for a long time been using polystyrene inserts within the voids of their sections. It has now also been realised that this also prevents heat loss through these cavities. You can read more about this here.

Expanded polystyrene is a fantastic insulator, its versatility enables it to be converted into almost any shape or size which lends itself to the wide range of expanded polystyrene insulation available.

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