Low Energy & Low Carbon

NBT Updates

60% of all energy used in domestic dwellings is through space heating. This is an extremely high percentage and is much higher than any other source of energy loss. However when it comes to creating energy efficiency in buildings, the focus is often on other areas of energy consumption. There has been quite a lot of emphasis placed on energy efficient lighting for example, but lighting accounts for just 3% of the total amount of energy lost in the home. Reducing energy use across the board is hugely important but much more attention needs to be given to ensuring heating is cut down.

Reducing Consumption

So how can we reduce our space heating energy use? With our current technologies there are three key areas we achieve energy efficiency.

  • Creating balance between u-values, thermal bridging and air tightness.
  • Ensuring long-term high performance in energy reduction.
  • Providing effective moisture control in the building fabric by using the right materials AND the right specification

The methods and support we provide to all parties involved in the construction of new building projects helps to create an ethos, which in turn improves the overall quality of the building. By sharing information, we can save energy in both the short term and the long term as every party works to reduce consumption and emissions.

Building envelope design is now understood as the most effective route to delivering low energy and low carbon solutions and the principal component to any zero carbon strategy

Peter Warm

External walls and draughts are the biggest reasons for a need for space heating, so this is why we look to decrease air leakage. We use Building Envelope Designs to ensure heat isn’t lost in key areas, thus reducing the need for energy usage in space heating.

Tomorrow’s Garden City


Our high performance Pavawall and Pavaroof systems have been used in a number of projects, and the “Tomorrow’s Garden City” development in Letchworth, Hertfordshire uses these technologies in order to create highly energy efficient, low carbon homes. The mixture of houses and apartment blocks were built to Code for Sustainable Homes level 4 standard, with energy efficiency and sustainability at the forefront of the specification criteria.

Pavawall & Pavaroof

The Pavawall system enhances the wind and airtightness of the walls and utilises both a render and timber cladding finish to create a unique aesthetic. We also incorporated NBT’s Pavaroof system which was used to create the highly insulated and airtight roof structures. All of the homes feature predominantly flat roofs, some of which are green roofs. In addition, each roof design features a south facing sloped section, which accommodates either solar or photovoltaic panels.

If you would like to know more about how Natural Building Technologies incorporates energy saving and carbon reducing systems in our buildings, please don’t hesitate to get in touch.