Is pour foam a practical solution for this issue?
There is a niche above my covered entry way. I guess you could think of it as a small flat roof or a cold floor (with drywall on the conditioned slide and sheathing on the exterior) . Because of a miscommunication, the insulation contractor did not foam this area while treating other areas of the house.
My energy rater suggests drilling a series of 2 inch holes in the drywall and using a kit to spray foam the entry way from above. I am fine with this idea but am wondering if pourable foam would do a better job of filling the void. (Someone on GBA asks a similar question but received no comments.) Online sources offer a variety of open and close cell formulations. I image you have to be careful about mixing the two parts correctly and completing your pour before the reaction gets too far along.
Is this a bad idea? Should I stick a more traditional solutions such as a Touch and Seal kit?
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Foam pours are a bit risky- once installed can't be changed or fixed without major demolition. (It glues everything together.) You have a little bit more control if using a spray kit, but that's a bit hard to get right without pulling down the gypsum.
I don't have a clear mental picture of the assembly that is being insulated.
Hi Dana,
After more reading, I was having the same concerns about trying to manage a pour so there were no void or blowouts. Here is a photo that might help you visualize the entry way.
So it's fully conditioned space on the top side of the assembly, and an outdoor ceiling on the bottom side.
只需在气候中泵送充满玻璃体或玻璃纤维，就没有风险。它基本上与码头基础或爬行空间的绝缘层相同。IRC Code Min将是第3A区的R19，但更高的是很好的。DIY纤维素具有租赁鼓风机将非常简单而有效。即使你不能达到3磅密度，它仍然非常空气。希望灯具是垫圈的气密和额定保温接触的额定值？
Thanks, Dana.
That would be simpler. I will check out the fixture to see if it can handle the insulation.
If the fixture needs to be replaced, a surface mount LED downlight in a standard electrical box would allow for thicker insulation and would be easy to air-seal.