When a maternal spirit is attached to your home is it covered in shellac?

Only if it is a piece of antique furniture.

In all seriousness, shellac is a natural furniture finish that was used in the 17th, 18, and early 19th centuries. It was replaced by modern synthetics beginning around the 1940's, and has been completely rendered obsolete (other than repair work) by polyurethanes and similar finishes.