I have a combo shed/potting shed. The potting shed side has polycarbonate roof, single pain windows, and some regular 2x4 walls and siding. The floor is slightly elevated off the ground and has gaps between the wood floor (more like 2x6s with small gaps between).
My use case right now is really centered around seed starting for a large garden in zone 6b.
This is new for me, and I set up a temperature sensor recently and found that the potting shed area gets much hotter during the day with sun, but at night it tends to match the outdoor temperature pretty closely. I believe this will make it very difficult to do seed starting early like this and am curious what I must do to gain 10-20F higher temperatures at night (my guess for bare minimum!). I do have power but would like to use as little as possible. I also have an exhaust fan for the hot temp days.
My initial thoughts include stones around the perimeter to stop airflow under the floor - since it’s slightly elevated off the ground. Basically enclose under the shed, is that enough? I could add insulation to the walls if needed, worth it? The roof is polycarbonate and I can’t cover that so assume this is as good as it gets? I could do heating mats under my seeds if needed? If I must, and thermostat controlled oil or baseboard heater? Other thoughts?
Thanks!
