Soffit Vents - too much ventilation?

Ivor Windybottom said:
Think you should stop thinking, and just see how it goes!

It will be colder than outside first thing, as it has thermal mass so will lag the rise in outdoor temperature. Also if you're measuring the outside temperature in sunlight then you're getting an aritificially high temperature. You need to measure in the shade.

Similarly it will be warmer than outside in the evening. All totally normal.
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All useful information! Thanks

What does the thermal mass thing mean?
 
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Think you're overthinking. You're assuming your thermometer and the forecast are accurate to 1 degree, neither of which is true.

Getting really nerdy, if your roof is damp then the evaporating water from the outside may have a chilling effect in exactly the same way as a fridge or air con system works.

The good news is it's not warmer, so it looks like your insulation is good.
 
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