Does my roof baffle install look correct?

[jimy]

I just put in my first roof baffle and am looking for confirmation it is correct. Picture attached below...

It is attached to the roof purlins and folded into position at the bottom. Is this going to give enough air movement from the vented soffits to the ridge vent?

I'm guessing the baffles (and also metal roof ridges) have plenty air movement capacity compared to the little holes in the soffit - sound right?

thanks,

Jim

 

[KJ in VT]

Every install I've ever seen had the baffle extending over the top of, and beyond the exterior plane of the wall. Allows the insulation to be continuous within and over the top of the wall. But that was with typical rafter/rafter tie construction. Any reason you wouldn't do it that way? Using the baffle as blocking to spray foam against?

 

[The Cobbler]

I would extend the baffle straight out and use batt insulation to dam the opening at the top of your plates

 

[K'ledgeBldr]

It’s almost right- see attached pic.
You want the blow-in to be able to sit on top of wall.

 

[rayra]

I would extend the baffle straight out and use batt insulation to dam the opening at the top of your plates

nah, he bent the baffle to do just that.

I too would try to end the baffle at the outer skin of the vertical wall, to sort of make the insulation barrier contiguous with the wall insulation (if any?). But it looks good enough to me.

 

[jimy]

Thanks for the advice. I do like the picture posted above - it is better than what came with the baffles.

I think I am ok. I actually put 1.5" foam board above each opening of the top plates, screwed down with the plastic washers for foam board. That should help insulate and reduce air movement. I haven't seen that done, but it seemed like a good idea. I plan to use blown insulation (not spray foam) for the ceiling. In any case, it will only be heated on occasion...

I also used a couple of the plastic washers on each baffle - the staples seem to tear out easily so this may help keep things in place.

Jim

 

[CraigStu]

I think it depends on how easy it would be to assure that the baffle doesn't go straight out beyond the wall. I could be misinterpreting but it looks like the diagram has the baffle bend back, come over the top of the wall and down the inner edge of the wall. I am not sure that his baffle would do that.

 

[rburke65]

I think you are going to be ok as shown.

 

[The Cobbler]

would you not get more insulation at the intersection of the wall & ceiling by keeping the baffle straight and using bat to dan it?