czcastermaster
REGISTERED
I am building a shed, standard light frame construction, walls ~3.5 feet from property line and roof eaves projecting 1 foot out from walls so FSD applies to both. Wall is stucco and I'm good there.
The issue is I'd like to be able to get some air through the frieze blocks and into the skillion/cathedral roof cavity between the ceiling insulation and roof sheathing ply. However I'm wondering if this will put me at odds with Table 302.1(1) for projections. With no openings, b applies, the eaves are 0 hours and I'm done, easy.
With frieze block openings to get roof ventilation, now I need 1hr eaves rating right? I'd like to argue that with the cathedral roof/ceiling configuration, I don't have a "gable roof" and note b still applies, but I'm just not sure an AHJ would buy it...
Can I just get some ASTM 119 1-hr rated Vulcan/Branguard vents and install them in the frieze blocks? Then I need a 1 hr eaves/soffit right, and how can I vent a 1hr assembly?
Or maybe, I try to make a "1 hr" soffit an AHJ might accept? For example, I was thinking of continuing the exterior wall stucco up and across the eaves, and adding those ASTM 119 1-hr rated vents through the stucco soffit.
Worst case I can do a mid-roof strip vent near the low side l if really needed... but the slope is on the low side (3:12) and so at the limit of these vent types and would prefer not having a giant hole through my lowish slope roof.
Any ideas?
The issue is I'd like to be able to get some air through the frieze blocks and into the skillion/cathedral roof cavity between the ceiling insulation and roof sheathing ply. However I'm wondering if this will put me at odds with Table 302.1(1) for projections. With no openings, b applies, the eaves are 0 hours and I'm done, easy.
With frieze block openings to get roof ventilation, now I need 1hr eaves rating right? I'd like to argue that with the cathedral roof/ceiling configuration, I don't have a "gable roof" and note b still applies, but I'm just not sure an AHJ would buy it...
Can I just get some ASTM 119 1-hr rated Vulcan/Branguard vents and install them in the frieze blocks? Then I need a 1 hr eaves/soffit right, and how can I vent a 1hr assembly?
Or maybe, I try to make a "1 hr" soffit an AHJ might accept? For example, I was thinking of continuing the exterior wall stucco up and across the eaves, and adding those ASTM 119 1-hr rated vents through the stucco soffit.
Worst case I can do a mid-roof strip vent near the low side l if really needed... but the slope is on the low side (3:12) and so at the limit of these vent types and would prefer not having a giant hole through my lowish slope roof.
Any ideas?