If you are glassing, be careful with outgassing from the wood (if you are building in wood). Outgassing results in a lot of tiny bubbles in the laminate.

We wanted a fan to circulate the air so we get an even temperature at all heights in the workshop. We thought about IR heaters, patio heaters etc, but in the end the workspace heater was our best solution. Tested it over the weekend and it looks like our insulation work combined with this even is the thing.
Looks like you have something similar in your workshop. The little yellow thing at the front of the hulls looks like an electric fan heater. IP44 standard?