greenjourneyman
Member
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- montana
Does new code require boxes to be air tight in exterior walls on dwellings? Unfortunately I haven't taken a 2014 update class but I heard several people say it's new code. I can't find :huh:
Airtight boxes
- Thread starter greenjourneyman
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jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
One cannot find that which does not exist.
The 2014 NEC has no such rule, but your local/state building or energy codes may be different.
The 2014 NEC has no such rule, but your local/state building or energy codes may be different.
bphgravity
Senior Member
- Location
- Florida
They are probably referencing the Air Leakage - Thermal Envelope requirements in the IECC, Sections C402.5 / R402.4.
The code calls for ASTM E 283 tested luminaires having an air leakage of not more than 2.0 cfm, and an air barrier behind electrical or communication boxes OR air-sealed boxes when installed on exterior walls.
The code calls for ASTM E 283 tested luminaires having an air leakage of not more than 2.0 cfm, and an air barrier behind electrical or communication boxes OR air-sealed boxes when installed on exterior walls.
jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
Link to what Bryan H. is referring to:
https://www.energycodes.gov/sites/d...uide Air Leakage Guide_Sept2011_v00_lores.pdf
https://www.energycodes.gov/sites/d...uide Air Leakage Guide_Sept2011_v00_lores.pdf
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