Wikipedia:Articles for deletion/Roof cleaning
I added a bit of prose and two more reliable sources verifying the prose. In the article references, the Miami Herald refs, the Journal of Phycology ref, the Atmospheric Environment journal ref and the IEEE conference ref are all reliable sources; the last two are in depth. There are also sources out there discussing roof cleaning and its effect on the use of roofs as water catchments in dry areas, and of course, lots of domestic roof cleaning sources such as the one Warden pointed out. Cleaning snow off roofs is another important issue in the high latitudes. The presence of multiple reliable sources shows that the topic is notable. While the article could be a spam target, possible spam suggests editing the article, not deleting it. A notable topic, per  and no insurmountable problems with the article, per , lead to a keep recommendation
— User:Mark, 00:12, 19 April 2013 (UTC)
Stance: keep
Cited policy: WP:GNG||WP:SURMOUNTABLE (Wikipedia:Notability)