you should know About attic ventilation
Attic ventilation is an important part of your home’s
design and construction.
- In the summer, attic ventilation can help
prevent heat buildup, which will help
make your living areas cooler and more comfortable,
help reduce air conditioning costs and help prevent
roof shingle deterioration. The
major shingle manufacturers require attic ventilation
to validate the shingle warranty.
- In the winter, attic ventilation can help
prevent moisture buildup, which will help
prevent wood rot, mold, mildew, and poor indoor
Your attic needs equal intake and exhaust ventilation.
Research has shown that the best way to ventilate an
attic is with a balanced system of intake vents low
at the roof’s edge or in the soffit/eaves, along with
exhaust vents high on the roof at or near the ridge.
This allows cool, dry intake air at the roof’s edge
to flush out any warm, moist air through the exhaust
vents. Be sure your attic has enough intake vents.
They are crucial to the attic ventilation system and
Indications that your attic might have a ventilation
- Wet or compressed insulation
- Rusty nails
- Rusty spots that dripped onto your insulation
- Blackened plywood
- Mold or mildew inside your attic
- Curling or cracking shingles
- Uneven snow melt/icicles at the roof edge