Originally Posted By: mboehmer This post was automatically imported from our archived forum.
Attic ventilation – Total net free ventilating area shall not be less than 1 sq. ft. for each 150 sq. ft. of the area of the space ventilated. (IRC 806)
Originally Posted By: Dan Leleika This post was automatically imported from our archived forum.
mboehmer wrote:
Attic ventilation -- Total net free ventilating area shall not be less than 1 sq. ft. for each 150 sq. ft. of the area of the space ventilated. (IRC 806)
I do believe that is 300 sq.ft and not 150 sq.ft and that would be floor area in the attic. And Twice the amount of vent area if louvers are present.
It is a crawlspace without a vapor barrier that needs 1 square foot of free vent for every 150 sq.ft.
Originally Posted By: Monte Lunde This post was automatically imported from our archived forum.
Dan, mboehmer
Let see IRC 806.2 says 1/150th of vented area OR 1/300th if 50% to 80% is >3' above eave vents OR vapor barrier faces conditioned space. So I would say that you both are right and both are wrong. I think that when a code is quoted, then use all of the code not just the part that fits your opinion.
sbyrnes
Spent less then $20.00 and get a code check book, it answers a lot of questions.
-- Monte Lunde CCI, CCPM, CRI
Viking Construction Services Inc.
Originally Posted By: sbyrnes This post was automatically imported from our archived forum.
not looking for code requirements since I’m not inspecting it for code. I’ll leave that to the county inspectors. Just need a rough idea of what’s usually required.
– All Corners Home Inspections, Inc
Serving Pasco, Hernando, N. Pinellas & N. Hillsborough counties