Insulation slows heat flow into and out of your home. During summer, the sun soaks through your roof, warms the deck and attic air, and transfers heat into living spaces. Proper insulation resists that transfer.

Conversely, in winter, insulation helps keep the heat inside. Although our winters are mild compared to northern states, preventing even modest heat loss improves comfort and reduces energy use.

The effectiveness of insulation is measured by R-­value, which tells how well a material resists heat flow. The higher the R­-value, the better the resistance. For southeastern homes, upgrading insulation often adds noticeable comfort and efficiency gains. For example, studies show adding attic insulation and air-sealing can cut cooling/heating costs by roughly 15% for homeowners.