Insulation doesn’t necessarily have a strict expiration date, but a good rule of thumb is to replace or upgrade your attic insulation every 15-20 years.
If you move into a new home in Burbank, make sure you get an insulation specialist to check the attic insulation to ensure your home is shielded. An insulation specialist will inspect your attic insulation and check whether it needs to be replaced.
In general, we suggest you monitor your energy bills. If they go up with no other plausible explanation, it could mean that your attic insulation is deteriorating and is underperforming. Your home will also feel less comfortable: too hot in summer and cold in winter.