09:30 Mr John Denham (Southampton, Itchen) (Lab)

The Government have had plenty of warnings. The Office of Fair Trading reported in 2012 that failure to install properly would undermine Department of Energy and Climate Change targets for energy reduction. It recommended that DECC should ensure that there was a single body ensuring effective independent monitoring of installers and installation quality. All there seems to be is a licence; Dianna Goodwin of the CWIVA bought one online for £75.

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09:53 George Hollingbery (Meon Valley) (Con)

According to Department of Energy and Climate Change estimates, there are about 690,000 remaining “easy to treat” cavity walls in Britain, not including those in exposed locations, or with other issues such as narrow cavities and wall faults. If those were all insulated, the energy bill saving would be about £100 million a year, and the carbon dioxide saving would be about 450,000 tonnes a year. That would be the same CO 2 saving as taking about 180,000 cars off the road. We should be clear, therefore, that cavity wall insulation is, on the whole, a good thing, when it is done at the right time, in the right place, in the right properties, by the right people.

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10:30 The Parliamentary Under-Secretary of State for Energy and Climate Change (Amber Rudd)

Since 1995, uptake of cavity wall insulation has increased significantly with the launch of successive energy-efficient home improvement schemes by this Government and the last, including schemes aimed at fuel poverty such as Warm Front, and those focused on climate change, such as the energy company obligation and the green deal, which enable home owners to install energy efficiency measures, including cavity wall insulation. Between July 2010 and September 2014, 2.27 million homes had cavity wall insulation fitted; of those, 1.7 million did so under Government schemes. At the end of September 2014, 13.9 million homes had cavity wall insulation, or 72% of properties with a cavity wall. Up to the end of November 2014, some 462,103 cavity wall insulation installations were delivered under ECO, or 37.9% of total ECO measures, making them the most popular measure undertaken by households.

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