Attic Ventilation On Colonial Salt Box

A brief history of saltbox houses.

Attic ventilation on colonial salt box.

Since the rear of the roof descended to the height of a single story building the structure was exempt from the tax. Actually the saltbox shape evolved organically from the need for additional. In other words the entire vent opening doesn t count as vented space. Back in colonial times many saltbox homes started as symmetrical two story houses but as families expanded so did their square footage.

If not measure the size yourself. The saltbox originated in new england and is an example of american colonial architecture folklore holds that the saltbox form was popularized by queen anne s taxation of houses greater than one story. See the benefits of attic ventilation a new roof is more than just shingles. Also cover my gable vents and install the shingle vent 2 continuous ridge vent.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. The open area of a vent is sometimes listed on the roof air vent as nfva net free vent area. In of vent opening per 150 sq. Generally speaking you need a ratio of 1 300 where for every 300 square feet of ceiling space you need 1 square foot of attic ventilation.

If overflowing gutters can cause water to get into your sidewalls then you have a serious design problem. Although properly installed attic ventilation fans can be an effective way to cool your attic improper sealing can cause the fans to pull conditioned air through small cracks in ceilings forcing your hvac to run longer and work harder. The building code lets you reduce that by half under some conditions but more roof ventilation is usually better. The attic side does not suffer from ice daming like the front.

That said air resistance and interference such as vent grates reduces the area of true ventilation. Intake vents located at the lowest part of the roof under the eaves allow cool. Then aim for about 1 sq. Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof.

Attic ventilation in saltbox conor stinson posted in energy efficiency and durability on october 29 2018 09 48pm i m trying to retrofit my 1978 salt box style house.