Does Venting an
Attic Remove Moisture?
Converting attics into a semi-conditioned space in hot
climates by closing soffits, gable and ridge vents is a
positive design approach in reducing the moisture loads in
houses and buildings. This can be achieved by moving the
insulation from the floor of the attic to the underside of the
roof deck. The usage of a high quality and low air permeable
spray foam insulation, sprayed to the underside of the roof
decks and sealing all vents, is an excellent approach in air
leakage control. This design prevents the moisture laden air
from the outside to enter into the attic and subsequently into
the houses and building. In the state of Florida this design
approach has been conducted for more than a decade and
thousands of residential and commercial constructions have
used the conditioned attic without any energy penalty when
compared to the vented attics with air distribution ducts.
Test Your Attic IQ
Q: Air movement through a vented attic reduces cooling
A: FALSE: In vented attics radiant heat from the roof deck
increases the attic temperature substantially.
Q: Venting attics removes moisture.
A: FALSE: In hot humid climates the best way to prevent
moisture condensation is to prevent moisture altogether by
sealing the attic from outside temperatures.
Q: Closed attics are more cost-effective and
energy-efficient than vented attics.
A: TRUE: Closed attics are really the smarter choice!
Now that you understand the
problems of attic venting, call today for more info, or
click here for a free
estimate on our spray foam insulation services.
Spray foam attic insulation
By now, I hope we've proven our point and you can agree that a closed attic provides better insulation without causing added risk of humidity. In fact, the seal prevents any rise in humidity and adds the extra benefit of mold prevention.
We've been proudly insulating attics in and around Louisiana for over 20 years, in particular dealing with the following cities.
- Baton Rouge
- New Orleans
- St. Tammony
Contact us to find out more!