40 PROJECT REPORT: SOCIAL HOUSING


says Lonsdale. In fact, it needs to be above  degrees for a hour period for the installation to be effective, and Northumberland winters won’t always cooperate with that requirement. All the works have been designed


to PAS 2035 standards – the national framework standard for energy retrofit. raig eplains that arbon relies on its retrofit assessors to ensure that the installations comply, as well as the contractor itself. As part of the funding arrangement, Karbon provides regular coordinated design updates to the council to demonstrate the “relentless push” towards a C grade EPC, in order to have the staged funding released. Getting residents to “sign up” was challenging, says David Milburn – but the project team held open days where the residents could meet the contractors, discuss the works and the benefits they would bring, as well as aspects of the programme. He says that although they “could not make promises their gas bills would be halved,” but reducing their epense was the key message.


RETROFIT MEASURES


When it came to which properties would receive which solution, as well as the software’s judgement, there was also an


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overriding aesthetic consideration, says Lonsdale. “With EWI, you’ve got to do all the properties.” However this meant challenges, as every installation was weather dependent, notwithstanding keeping the planners happy on the precise render colouring, as it was a change from brick to a more uniform colour. The proof in the pudding is that neighbouring private owners who didn’t have their eteriors insulated, were asking the housing association when theirs could be done, reports Milburn.


The project software used gave the team a lot of detailed info in terms of how to treat each property, including the recommended and appropriate product solutions in each home’s case for eample it wont suggest triple glazing in a conservation area). This also came down to the eact dimensions of W to be installed, for eample, which might be constrained based on where a damp proof course was, or if air bricks needed to be left uncovered. The softwares other benefit is providing estimated running costs of the properties, however energy price rises are making this increasingly complicated. One of the major hurdles for making the PV installations a success was ensuring that the customers contacted


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