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Definition of hard to treat cavity wall for green deal

Posted by Cathy Debenham on 8 August 2012 at 9:35 am

We know buildings with 'hard to treat' cavity walls will be eligible for funding under the Energy Company Obligation (ECO), when it comes on line early next year. But how do you know if your walls count as hard to treat?

Greg Barker made a written statement to house of commons on the 11 June 2012. It said the following:

Generally for statistical purposes DECC consider the following types of cavity walls to be hard to treat:

Narrow cavity—Masonry cavities that are less than 50 mm wide.

Concrete construction—Prefabricated concrete constructions systems with cavities.

Metal frame construction—Metal frame construction systems with cavities.

Random stone cavity—Uneven cavities formed in walls constructed of natural stone outer leaf and block/brick inner leaf.

Timber frame uninsulated studwork cavity (also has a masonry cavity, which must not be filled).

Too high, more than four storeys tall.

Exposed to severe wind driven rain.

Wall fault in its outer leaf which would need to be remediated before filling.

However, hard to treat for statistical purposes may not necessarily be the same as hard to treat for funding purposes. He also said this:

"The Green Deal and Energy Company Obligation Impact Assessment and draft Secondary Legislation, due to be published shortly, will set out the types and numbers of cavity walls remaining to be insulated and which of these would be eligible for support through the Green Deal and ECO programmes".

More information about cavity wall insulation and the Green Deal from YouGen

Green Deal information page

Insulation information page

Insulation is king - part 2 (about cavity walls)

Does cavity wall insulation cause damp and condensation?

Find an insulation installer

Photo by Steve Cadman

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