I live in an apartment in an old brick building. The floors have sagged, causing huge gaps between the floor and baseboard in every room of the apartment. Some gaps are 2 inches. There are also electric radiators on the floor with large gaps under them. My landlord just wants to stuff fiberglass in the cracks and then put tape over it! I have suggested using expandable foam, which can then be trimmed/sanded/painted. What is the best way to fix this problem??
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