Whoops...I think we made it TOO efficient

Today, we regretted having insulated a client's attic with spray foam. After 30+ inches of snow a couple weeks ago, we have been unable to install a couple skylights and to do some repairs on a client's flat-roofed rowhouse. The snow is still 1-2 feet deep on many yards, sidewalks, and yes, roofs.

Temperatures have been above freezing all week, so we figured a fair amount of snow should have melted by now. This morning, we decided to climb up and shovel off any snow we might find hiding in shadows or snow drifts, thereby allowing our roof work to begin. When we got up there, we were dismayed to find 100% snow coverage, and it was shin-deep at that.

The neighbors' roofs not only had significant melting, but they were downright arid in some places. Even with a 200,000 BTU heater blasting away at the new drywall one level below, our client's roof looked like it was begging for fresh tracks from a heli-skier.

Stupid spray foam. We spent most of the morning shoveling snow that was blissfully unaware of the sauna-like conditions just a few feet below.

I'm kidding, of course. Spray foam really is great stuff, as we have mentioned in the past. I'll just have to remember to budget more hours next time we're clearing snow off a well-insulated roof.