A steel-framed flat roof system with only R-25 continuous insulation (c.i.) above the roof deck.[1] An I-joist flat wood roof system with both cavity insulation below the roof deck and continuous ...

We say that because the roof in question is not, in all honesty, totally flat – but we'll come to that later. Flat roof ...

If your attic insulation is good, the snow will stay on for a long while (and actually will add insulation to the roof, since snow is an insulator). The best snowstorm for these observations will ...