amp An Intro to Night Sky Cooling Charles Buell Part 1 of 7 Myths of Attic Ventilation Charles Buell Charles Buell Inspections Inc 1 The Moving Target 2 In achieving our ventilation goals there are ID: 677915
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Myths of Attic Ventilation
&An Intro to Night Sky Cooling
Charles BuellPart 1 of 7
Myths of Attic Ventilation
© Charles Buell, Charles Buell Inspections Inc
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The Moving Target2Slide3
In achieving our ventilation goals there are…..Materials limitationsWorkmanship limitationsCost/Benefit limitationsCodes ahead of the curve
Codes behind the curve3Slide4
Myth #1:What works in one area will work in all areas.
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Myth #2:There is only one way to do something in any given area.
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Myths of Attic Ventilation
&
An Intro to Night Sky Cooling
Myths of Attic Ventilation
© Charles Buell, Charles Buell Inspections Inc
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Myths of Attic Ventilation
© Charles Buell, Charles Buell Inspections Inc
Fall 9/29/2015
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Myths of Attic Ventilation
© Charles Buell, Charles Buell Inspections Inc
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Myths of Attic Ventilation
© Charles Buell, Charles Buell Inspections Inc
Spring 4/9/2017
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Myths of Attic Ventilation
© Charles Buell, Charles Buell Inspections Inc
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You can have frost “outside” standard frost expectation dates. (Shoreline, WA)
Myths of Attic Ventilation © Charles Buell, Charles Buell Inspections Inc
Frost Guaranteed
Frost is a Possibility
Frost Due to Night Sky Radiational Cooling
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Myths of Attic Ventilation © Charles Buell, Charles Buell Inspections Inc
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Myths of Attic Ventilation © Charles Buell, Charles Buell Inspections Inc
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Myths of Attic Ventilation © Charles Buell, Charles Buell Inspections Inc
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Myths of Attic Ventilation
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Myths of Attic Ventilation © Charles Buell, Charles Buell Inspections Inc
Photo curtesy of Jonathan Quigley, All Island Home Inspections
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Myths of Attic Ventilation
© Charles Buell, Charles Buell Inspections Inc
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So why does mold growth tend to show up more on the North side of the roof than the South side of the roof?Myths of Attic Ventilation
© Charles Buell, Charles Buell Inspections Inc18Slide19
And the solution is??
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20Treating the surface with wood preservatives
Insulation on top of the roof sheathingHot roofs (insulation directly applied to the underside of roof sheathing).Slide21
If you want to learn more about how night sky radiational cooling works, this is the major treatise on the subject:
Why Wood Frame Attics Get Wet & Moldy in the Pacific Northwest Myths of Attic Ventilation © Charles Buell, Charles Buell Inspections Inc
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