Thread: Building control and current regulations
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Old Nov 29, 2008 | 06:35 PM
  #5  
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Lee Reynolds
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Minimum of 150mm kingspan/xtratherm or similar in the roof space preferably with a 50mm gap above between insulation and roof felt. 100mm Kingspan/xtratherm or similar in the eaves walls/dormer cheeks.

and yes they are strict.
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