For all new build homes it is becoming mandatory to work to the code of sustainability from May 2008. It is said that up to 3 % of heat loss can escape through your exterior door letter box.Stopping this heat loss helps increase the energy efficiency of your home.Review:Mr John Christophers - Associated Architects - Birmingham"We installed an Ecoflap on our Zero Carbon House, see HERE and HERE.It has worked very well and enabled us to achieve an overall Q50 airtightness of 0.97 and N50 airtightness of 0.34. For the non-technical this betters Building Regulations by more than 10X!"
Added By: The Letter Plate
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