Frost patterns can tell a story

With this cool weather and lack of snow, your roof can tell a story.  Look for uneven frost formation to identify areas of excessive heat loss.  Dig deeper.  You may find uneven insulation, open walls, light bulbs, or vent fans dumping heat to the roof.  All pose problems.

The above photo had a large interior wall top plate open to the attic and the lower photo had very poor insulation insulation distribution.

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