I also heard of a class who painted paper cut to wrap around the tiles.
That was to appease administration.... probably more of a fire hazard,
From: email@example.com [mailto:firstname.lastname@example.org]
Sent: Thursday, April 28, 2005 8:48 AM
To: TeacherArtExchange Discussion Group
Subject: Re: [teacherartexchange] fun spring projects
We turned the tiles over and painted on the reverse side. We did this
several years ago. It would be wise to check with your school
administrator before doing this.
> We were brainstorming yesterday about fun projects with which to end
> the HS year...painting on the ceiling tiles came up. Did we recently
> find that it was a fire hazard? These are relatively new tiles, about
> 30' x 20' each, and are composed of compressed insulation. The part we
> see after they are installed, where we would paint, is painted white.
> Was it this type that was discussed? Was it a fire hazard to paint
> them? It certainly seems illogical.