I don't know maybe we weren't communicating clearly but we had very detailed construction docs...We hired out a crew to blow cellulose insulation for 5 times what it just cost us to do in our own home and found that when we had to do a small job on what we hired out they didn't even try to dense pack it and even missed a few bays.

Insulation is a big thing. 

In a Duplex with a boiler/radiated heat, the new boiler proved very problematic when the fire box kept filling with water, and the contractor doing the attic insulation fell completely through the 9' ceiling and down to the floor.

But then I realized the w/d must be in the unit after I insulate the attic (didn't realize at first I'd have to insulate the attic floor--thought I'd be insulating the roof, but I guess that would cause headaches since it would mean the tenant is paying to heat the attic; a rookie mistake, I'm sure).

Hi everybodyI recently acquired an old house which has the furnace and water heater in an uninsulated attic.I intend to eventually finish the attic as an ADU--during which time time I'll move the insulation from the attic floor to the rafters--but for now it's uninsulated and gets really cold.What would you do to protect the water heater (which I just replaced)?

They did a free insulation upgrade job in a nine unit in Berwyn that I own just over a year ago. 

Smoke penetrates everything: insulation, carpets, any unsealed wood framing-interior of cabinets-lite fixtures, hvac system, etc.

. - REMOVE CARPET MATERIAL ON BASEMENT FLOOR AND UP STAIRS - REMOVE BASEBOARD; DOOR CASINGS AND INTERIOR DOORS - REMOVE SHEETROCK UP TO 84” HEIGHT OFF OF FLOOR - REMOVE WALL TILE AND SHEETROCK SUBSTRATE IN BATHROOM – SAVE TUB/SHOWER FAUCET & TRIMS - REMOVE BATHROOM VANITY – SAVE FAUCET - SAVE TOILET, TUB AND TUB GLASS DOOR - LEAVE HVAC AND HOT WATER HEATER IN PLACE FOR INSPECTION - LEAVE ALL ELECTRIC IN PLACE FOR INSPECTION - LEAVE FRAMING IN PLACE FOR INSPECTION - REMOVE INSULATION ON OUTSIDE WALLS - NO CEILING WORK - REMOVE STAIR TRIM THAT WAS UNDER WATER – LEAVE TREADS AND RISERS IN PLACE.3.

Examples are  floor tile mastic, fireproofing on structural columns, and insulation.

Resale right now in hocking county for new builds is over $300 per square foot and in columbus it is around $240 per square foot average so very strong demand and very limited supply is best economics for an insulated opportunity.