I've been collecting solid sheets of insulation to insulate the cellar ceiling under my kitchen floor, and have got enough to start fitting it. However, I have cables running between and through the ceiling/floor joists, 32A ring main and 5A lighting. How should I pack the insulation between the joists to avoid negatively impacting on the installed cable carrying capacity?
Here is a picture of a bit I've been experimenting with:
I've been thinking of leaving about an two-inch gap in the insulation where the cables pass through, or would the resulting installation method leave the CCC ok if the cables ran through the insulation?
If the cables are within the insulation they've have 90mm above and 90mm below them.
jgh