Insulation + drywall

What's happening

Insulation goes in (typically batt or blown cellulose for walls and ceilings; rigid foam in some assemblies for continuous insulation). Then inspection. Then drywall hangs, gets taped, mudded, sanded, and primed.

This is one of the simpler stages from a coordination standpoint and tends to run on schedule unless materials are delayed.

Inspections

• Insulation / air-barrier inspection (PP&D) — verifies R-values and air-sealing match your energy-code submittal.
• Drywall isn't separately inspected, but problems (cracking, lifted seams) show up during finish.

Decisions to make now

• Texture: smooth (most expensive), light orange peel, knockdown, Spanish lace
• Paint: primer + 2 coats. Color choices can wait, but make them before finish painting starts.
• Trim: paint-grade vs. stain-grade; profile

What drives the cost spread

The base number is fairly fixed. The variability is in:

• Wall area (taller plates = more drywall)
• Vaulted ceilings (a lot more labor)
• Custom textures (smooth-finish drywall doubles the cost)