On Sun, 22 Apr 2012 01:51:01 -0700 (PDT), bob haller
wrote:

summer roofs lay better, smooth and likely the shingles stick down
better to.

i know for a fact cold weather is a bad time to install roofs.

and black is a poor color choice in most places.

it causes excess roof heating, making homes with or without AC hotter,
and black shingles have shorter lives

All true. I went with dark gray instead.