[Kon-Peki]

Do you have roof access?

It's not going to be terribly windy in Boston... There are places that sell/rent temporary roof coverings, mainly for protecting from storm damage until it can get fixed. But anyway, white/reflective coverings are available, and can be held down with a few bricks for a week.

[neilv]

Good idea; I can't do it on this building, but I'll keep it in mind.