shanedn
shanedn OP t1_j5poo97 wrote
Reply to comment by carlbernsen in Attic ventilation with spray foam insulation? by shanedn
Here is a photo of one of the knee well attic spaces with a vent at the top: https://imgur.com/a/U5GcyLP
shanedn OP t1_j5pn76o wrote
Reply to comment by carlbernsen in Attic ventilation with spray foam insulation? by shanedn
No insulation in the attic floor, except for a couple inches of 80yr old insulation where they added a second floor on top of the first floor and didn't put in the effort to remove it. Newer parts of the house you'll just see the ceiling drywall from the room below.
There is roughly 2-3" of spray foam under the roof decking/between the joists. Colorado front range for climate reference.
shanedn OP t1_j5pi3yx wrote
Reply to comment by ZealousidealPickle11 in Attic ventilation with spray foam insulation? by shanedn
Even with spray foam insulation under the roof deck? From everything google seems to say, you usually don't want ventilation:
https://www.google.com/search?q=spray+foam+insulation+attic+ventilation
However, I'm not the one who did the insulation or the venting, so I'm trying to find out if they broke the "rules" for a reason I can't think of.
shanedn OP t1_j5qzie0 wrote
Reply to comment by Maplelongjohn in Attic ventilation with spray foam insulation? by shanedn
We do not have an ERV/HRV. Half of the house is pretty old and drafty, so it probably wouldn’t be critical immediately. But probably worth looking into.