Attic Ventilation
Also called: roof ventilation, intake and exhaust
🏠 Roof & Attic — a term you may see in your inspection report.
Why does attic ventilation matter?
Attic ventilation moves hot, humid air out of the attic. In an East Texas summer a poorly ventilated attic can run well over 140°F, which cooks shingles from underneath, shortens roof life, drives up cooling costs, and — in cooler months — lets moisture condense on the underside of the roof decking. A working system needs both halves: intake low at the soffits and exhaust high at or near the ridge. Exhaust alone, with blocked intake, does very little.
- What it does
- Moves hot, humid air out of the attic
- East Texas attic temps
- Can exceed 140°F in summer
- Requires both
- Intake at the soffits, exhaust at or near the ridge
- Most common failure
- Intake blocked by insulation or paint
What it actually is
Air has to come in somewhere and leave somewhere else. Ventilation is a system, not a product, and installing more of one half doesn't compensate for the other half being blocked.
Why it matters in East Texas
This is one of the highest-value things I check here, because our summers are punishing and most homeowners have never been in their own attic in August. A cooked attic shortens the life of a roof you just paid for.
What I do when I find one
I look at intake and exhaust as a pair, check whether soffit vents are blocked by insulation or painted shut, and note the attic conditions I find — temperature, moisture, staining, insulation depth and coverage.
What it means for you
Improving ventilation is usually modest money and it protects a major asset. If you're replacing a roof, this is the moment to fix it.
More roof & attic terms: Kick-Out Flashing · Ridge Vent · Soffit & Fascia · Roof Decking Delamination · Vapor Barrier
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