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Baker, Paul (2011) Technical Paper 10: U‐values and traditional buildings - In situ measurements and their comparisons to calculated values. Technical Report. Historic Scotland, Conservation Group.

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The study focused on U‐values as an indicator of thermal performance, and involved their in situ measurements and the subsequent comparison with U‐values calculated with software programs, and with often used ‘default’ U‐values. The study was carried out from 2007 to 2010.For the study, 67 in situ U‐value measurements were carried out, mostly of uninsulated solid walls but, for comparison, some cavity walls, and building elements retrofitted with insulation, were also measured. The non‐invasive measurements were generally taken of building elements with their internal and external finishes intact. The study then compared the U‐values measured in situ with their calculated equivalents. A particular focus of the comparison was the impact of the lime‐and‐stone core of a traditional solid stonewall. The study found that software programs for U‐value calculations tend to overestimate U‐values of traditional building elements: traditional building elements tend to perform better thermally than would be expected from the U‐value calculations. The study suggests that the in situ measurement of U‐values is a useful tool which can aid in the assessment of the thermal performance of traditional building elements.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: U-values, Thermal performance, solid wall, simulation, software, masonry, stonewall, traditional building
Subjects: English > Building Envelope > Insulation
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Depositing User: Anna Samuelsson
Date Deposited: 13 Mar 2012 12:42
Last Modified: 04 Apr 2017 11:10

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