Gable Vents vs The World

Let your attic breathe.

If you go into your attic at 2pm and you die instantly… you have a ventilation problem. Heat gets trapped up there. Like an oven. That heat pushes down into your bedroom. AC works harder. You pay Meralco more.

The Solution: Poke holes in the roof.

(Well, the walls).

Gable Vents These are the vents on the side walls of the roof (the triangle part). I love these. Why?

1. Cheap.
2. No chance of leaking (it’s on the wall, not the roof).
3. Physics works (cross ventilation).

Ridge Vents The vent at the very top of the roof. Effective? Yes. Risky? Kinda. In a typhoon, rain goes sideways. If the ridge vent isn’t perfect, water gets in. I prefer avoiding holes in the actual roof sheets if possible.

The “Screen” Rule

Put a screen on the vent. Mosquito net / stainless mesh. Birds love attics. Bats love attics. Rats love attics. You don’t want them as roommates. (Bird poop in the attic smells terrible… trust me).

The Typhoon Issue

“But Daniel, won’t wind blow rain into the gable vent?” Yes. Make the louvers (slats) steep. Angle them down. And put the vent high up, under the overhang if possible. Some people install a little door/flap to close them during storms. Overkill? Maybe. But safe.

Summary

Don’t seal your attic. Old houses had big vents. They knew what they were doing. Modern “airtight” houses are just hot boxes in this climate. Ventilate it.