Proper attic insulation is a game-changer for regulating home temperature and reducing energy bills. When soffit venting isn't part of the equation, insulation requires strategic adjustments to ...

For example, if your attic floor area is 30-by-50 feet, you would need five square feet of net free vent area in the ridge vent and the same amount in the soffit vents.

Isolate the air moving through the soffit vents into the attic by fabricating a chimney from cardboard at the soffit in each rafter bay. On the bottom edge of each rafter nail or staple an 18-inch ...

Rafter vents, or insulation baffles, are installed in an attic’s rafter space and create narrow gaps that direct fresh air from the soffit vents to the roof’s peak.

Attic ventilation can be achieved in a variety of installation methods including installations of soffit vents, mechanical and nonmechanical roof vents, ridge vents and gable vents.

Here are a few simple things you can do in order to get a handle on whether or not your attic needs more insulation: If the outside air temperature is near or below 32 degrees and there has been ...

Soffit vents should not be your home’s only vents, though. If they are, the air movement is restricted to the attic floor, and airflow does not pass over the roof sheathing.

A quick inspection revealed soffit vents clogged with paint and insulation, as well as gable vents doing an inadequate job of moving air through such a large attic space.

If the attic isn't insulated, do it. If it is insulated, and the insulation is less than 12 inches thick, beef it up. Twelve inches of batt or loose insulation provides a resistance factor of R-38.

Given the age of your home, I suspect that there is probably a vapor barrier, so the 1 to 150 ratio should suffice. The vent area should be divided equally between soffit and roof (or gable) vents.

Ignoring Ventilation: Even without soffits, flow of air is crucial to an unconditioned attic. Blocking Ridge or Gable Vents: Always leave pathways for air to move freely.