Older homes have their charms and quirks, and when well-maintained they often command a premium for buyers seeking history or craftsmanship.

But some homes are just old. Real old. And anyone who owns a house built prior to 1950 knows just how hard it can be to keep it maintained and updated.

To that end, Charlie Allen of Charlie Allen Restorations has identified the top problems he's found in older homes and how to fix them.