Collocations for insulated - adj.

be

well
badly (BrE), poorly
heavily
properly

against
The laboratory was well insulated against all outside noise.

with
The hot water tank should be insulated with proper insulating materials.

completely
largely
We are largely insulated from significantly higher costs.

from
The wealthy feel completely insulated from an economic downturn.

against
Many financial institutions are now insulated against higher interest rates.

Insulated is used with these nouns:
container, wire