Antenna in loft

I’ve put my small whip antenna as high in the loft as I could get it.

The roof space is insulated with the double sided foil bubble-wrap material, so I’ve cut a hole for the antenna to be the other side of the foil insulation.

I’m thinking of upgrading to the 26" antenna. Would that be OK in the loft if I could rearrange the foil insulation to be below the antenna?

Cant really see why that wouldn’t work…