bighammer

at what stage of the game on new construction are most of you installing proper vents? We do them after the roof sheathing and before the ceiling. What kind do you use? Our local lumber yard recently started sporting us with Durovent vents with windblock..if you have time chek it out, it is worth while..www.adoproducts.com


what are most of you doing in the proper vent world?

confluencebuild

I hope were talkin about the same thing, what we here in Cali call attic ventilation. Necessary to mitigate condensation and incidental moisture which accumulates above the insulating layer. As long as Ive been buildin round here we've put 1 1/2" holes in eave blocks with eyebrow vents or ridge vents, to allow air flow from the bottom of the roof to the top. The quantity of ventilation is determined by the adopted building code in your area. Round here, the CBC, cali's version of the IBC requires 1 unit of ventilation per 150 units of the area, not volume, to be vented.

Those days may well be behind us with restrictions on undereave vents due to the proprencity for burning embers to enter at the eaves and start a fire in the attic area.

Check out cor-a-vent products, they have a variety of ventilating applications.

I tried to include the link, but this site will not let me, something like dubdubdub.cor-a-vent.com

Ill try to find californias supplemental requirements for eave vents in rural areas.

tomstruble

they seem like they keep air from blowing thru the insulation
good idea

InsulPro

Windblock is the only way to go, it's way better than cutting fiberglass for the blockers.