I'm new to this group...hope you can help.
I have a friend in Toronto with an old Victorian home with double brick
outer walls, at least near ground level... double line of brick with
space in between. I think this is called stack or stacking.
The space between the brick layers allows an air draft to flow under
the house, somewhere, and eventually into her kitchen, via space
between the kitchen flooring boards (pine planks). There is a basement
below the kitchen that is a bedroom, so the ceiling in that bedroom is
sealed. The air draft has to be moving along the kitchen floor
joists/bedroom ceiling rafters. There is no reasonable access to these
joists/rafters, to stop the air draft coming into the kitchen.
Question: Can the space between the outer bricks be filled, or
partially filled, with blown-in soft insulation, to stop the air draft?
Or is this not a good idea...for your northern applications. I don't
know other details of the home's construction. Is anyone familiar with
this type of older home construction (stack) and the prospect of
insulating them or stopping these types of air drafts successfully. I
would think blow-in expanding foam is not appropriate for this double
brick exterior kind of construction.... Or do you think a limited
amount of expanding foam could be blown in, only at the bottom of the
space between the bricks, where air is entering the joist area? Any
free space above the joist area would allow the foam to expand freely
upwards, and not laterally - cracking the bricks. I would think
drilling a hole at or near the base of the outer brick would allow for
insertion of either type of insulation... or is this a bad idea because
of possible runoff water entering the remaining hole site, albeit
plugged after insulating.
Any suggestions, comments?
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