Comments from the customer:
"I hope you are well and that Glosfords continue to do well in these rather strange times.
It is now a year since we moved into the house you supplied for us so I thought you might be interested to learn how we are getting on.
From an environmental perspective, we are thrilled with the performance of the envelope. The attention to detail of the erection crew has paid off in spades. We did boost matters by installing triple glazing, and we focused on ensuring airtightness across the whole structure. Rather pleasingly, we obtained an air permeability rating very close to that specified for a Passiv Haus. This has been reflected in our energy bills which, for the first year, amount to only £440. We do have a significant investment in solar and the ground source heat pump but the rate of heat loss from the building is so low that we were as warm as toast during the winter."