Welcome Armond:
If we are talking about lath and plaster and the plaster is in good condition, I would leave it. I agree with Daryl on the paneling and with Square Eye on the heating and air conditioning. Check into a Goodman or Janitrol 90% efficient furnace and high SEER air conditioning. Many homes in your area don't have any air conditioning; a large expense you could drop off but the 90% furnace will pay for itself in saved fuel (about 5 years).
Insulation is another crucial factor I would look into. It will be the cheapest "high return" upgrade you can do.
I vote for the OSB if we are talking about the 3/4" Tounge and groove, underlayment grade glued and screwed to the joists; and knee walls can make the rafters share some of the load. You still need to take precautions that Daryl spoke of though.
Glenn
Last edited by glennjanie; 01-23-2007 at 12:22 PM.
Reason: spelling and punctuation
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