Ventilation

murt32

I am working on a church roof which when was built has no overhangs.They had ridge vent,but no sofits for sofit vents,i changed the rigde vent to roof vents the church is 100ft long by 34 wide,with a 6/12,what can i do to make sure they have enough ventilation?

CrpntrFrk

Turbine vent!? Don't know were you are located but were I am at those might be the answer. They usually tell you on the box how many you will need for your size roof. They are kind of ugly too so try to put them some where that they can't be seen.

Slyfox

Smart Vent

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Ed the Roofer

What is the rafter length from eave to ridge?

Also, is this a Wood T & G Ceiling?

Does it have nail-base insulation on top of the decking boards?

Smart Vent will provide 9 square inches of Intake Ventilation per Lineal Foot, but you drastically diminished the Exhaust Ventilation capacity by switching to the mushroom style static air vents.

Ed

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iceman61

This is what I was wondering. I have a church roof coming up next week that is 2 1/2" T & G Decking/Ceiling.

murt32

this is old remodeled church,half is non t/g 1x8 and the other half is osb, the rafter lenth is 17 ft,by 100ft lenth of church,thanks for your responses
this is a one layer layover, there is about four feet of attic space on a 7/12 with a cathedral ceiling,