Best Attic Insulation R-Values for DFW Homes

Attic insulation plays a major role in comfort and energy efficiency — especially in North Texas, where heat gain through the attic can drive cooling costs sky-high.

What Does R-Value Mean?

R-value measures insulation’s resistance to heat flow. The higher the R-value, the better it slows heat transfer.

Recommended R-Values for DFW Homes

For most Dallas–Fort Worth homes, the recommended attic insulation level is:

• R-38 to R-49

Many older homes fall well below this range.

Signs Your Attic Insulation Is Inadequate

• High summer energy bills

• Hot or cold rooms

• HVAC running constantly

• Uneven temperatures throughout the house

• Insulation that looks thin, compressed, or uneven

Why Blown-In Insulation Works Well in Texas

Blown-in fiberglass insulation:

• Fills gaps and irregular spaces

• Improves thermal coverage

• Helps reduce air leakage

• Is ideal for upgrading existing attics

The Bottom Line

Proper insulation reduces heat transfer, improves comfort, and helps HVAC systems work more efficiently — especially during long Texas summers.