> Switching to transparent wood could prove to be cost efficient as well. It is approximately five times more thermally efficient than glass, cutting energy cos

> Switching to transparent wood could prove to be cost efficient as well. It is approximately five times more thermally efficient than glass, cutting energy costs. This is the most exciting part to me. If you’ve ever done a Manual J (load calculation) for an HVAC system, it’s amazing how much energy is lost through windows. Energy.gov says 25-30%.