We have a covered entrance porch that sits about 10 inches off the
ground. It is wide open to the outside on two sides and surrounded by
the house on the other two sides.
I was replacing the decking and found (waterlogged) bags of pink
insulation stuffed in black garbage bags between the underside of the
decking and the dirt floor below.
I can't for the life of me figure out why they would put insulation
there. There is nothing underneath the porch other than dirt. The
porch itself is wide open to the outside on two sides so I can't
imagine how insulating under the deck would help anything. The house
(and basement) surround the porch on the other two sides but the
insulation can't be doing anything to insulate the house. The only
effect of the insulation was that water (inevitably) got into the bags
leading to moisture which presumably accelerated the rotting of the
So, any ideas (other than stupidity) on why someone would go to the
trouble of stuffing bags of insulation under the porch floor?
Previous Owner was planning to close the porch in, and ran out of cash
or ambition or time, after doing the first step? I've seen similar
things done under summer lake cabins people wanted to insulate enough
for occasional cold-weather use, heated by a potbelly stove. Wrong
material for the job, of course, but most people don't know much.
Well, it <sounds> plausible.
Do you live in snow country? It is possible the porch footing is not deep
enough. Insulating the ground may lessen the depth that will freeze
preventing the porch from rising. Snow acts like an insulator there would be
no snow under the porch.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.