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I recently moved into a single-family house. I'm working on better sealing of exterior cracks, etc.
There is a significant hole in the side of the house near the heat pumps where the lines enter the house. I can see some insulation. It definitely needs to be sealed up. I'm surprised the previous owners allowed it to deteriorate in this manner. I can see some of the insulation. I hope it doesn't have mold on it.
What is the best method? Expanding foam? More insulation? Caulk? It seems like a fairly significant hole, something larger than my hand.
I recently moved into a single-family house. I'm working on better sealing of exterior cracks, etc.
There is a significant hole in the side of the house near the heat pumps where the lines enter the house. I can see some insulation. It definitely needs to be sealed up. I'm surprised the previous owners allowed it to deteriorate in this manner. I can see some of the insulation. I hope it doesn't have mold on it.
What is the best method? Expanding foam? More insulation? Caulk? It seems like a fairly significant hole, something larger than my hand.
I found the Expanding foam works best in all temps!
It looks like they had a sill plate of some sort on it at one time, but it was either removed or fell off. I would put a bit of low expansion spray foam directly in the hole and then cap it with another sill plate.
Before sealingt he hole, if it was me, i would first do a insopection of each of the itemns to make sure they were not damaged from resting on the siding. next I would install a plastic/fibergalss shield so the items are properly resting on a suitable surface. Some of the ones the local hardware carries also have a top part so you can seal the area correctly and not just shoving in some thing to fill a hole. They also sell ones that are shoved up under the siding above to form a seal and cover against water penetration. If it was me i wouldn;t just shove or spray stuff in the hole because that's what it lookes like someone did before.
Seal it with minimal expanding foam-
Use a weather hood to keep rain from penetrating to the inside of the wall cavity.
Something like this-
As you can see between the 2nd and 3rd unit. Sheetmetal supply places usually have these specifically made for this application- Not a converted dryer vent or fart fan vent.
That loks like metal siding. If so you do not want the copper lines sitting on another metal such as steel because it will react when wet and evetually corrode a hole in the line from electrolys.
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