June 2026 Attic Ventilation Guide: Cut DFW Summer Energy Bills Without Replacing the AC

The Real Reason Your Upstairs Is 10 Degrees Hotter

In a typical DFW home, attic temperatures hit 140–160°F by mid-afternoon in June. That heat radiates downward through your ceilings, overworks your AC, and slowly bakes the underside of your shingles. The fix is rarely a new AC — it is almost always ventilation.

The Balanced Ventilation Rule

Code in most DFW jurisdictions requires 1 square foot of net free vent area for every 150 square feet of attic floor, split evenly between intake (soffit) and exhaust (ridge or off-ridge). Most homes built before 2015 fail this test.

Signs Your Attic Is Under-Ventilated

Ventilation Options Ranked for DFW Homes

Common Mistakes We See in DFW Attics

Quantifying the Payback

Customers who corrected attic ventilation in 2024–2025 reported:

Bundle With Your Next Roof

If you are within five years of a roof replacement, fix ventilation at the same time. Tearing into an existing roof to add vents later costs 3–4x as much.

Want a free attic ventilation assessment? S&B Roofing inspects ventilation on every roof estimate at no charge.