Roof insulation

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Did you know?</h3>
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Fact 37</p>
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A timber frame house will need air conditioning approximately 20 years before a concrete building.<br>
Source:&nbsp;<a href="http://www.tarmachomesproject.co.uk/why_masonry/benefits_of_thermal_mass/whole_life_performance_research.aspx">
Whole Life Performance Research by the Concrete Centre </a>
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