LPT Frost on your roof is a good indicator of how well your insulation is working to keep heat in
LPT Frost on your roof is a good indicator of how well your insulation is working to keep heat in When it gets cold enough for frost overnight, a well insulated roof will have frost on it in the morning. If there is a spot on your roof without frost, it means that heat from your home is escaping there and is an indicator you need to replace or add more insulation.
submitted by /u/IskandrAGogo