Check with theater companies regarding fireproof fabric. With their hot lights, they have to be very careful, and can give you some information. A source we used on the internet is https://www.rosebrand.com/, once on the site do a search for "flame retardent" to see a list of fabrics and sealents. There are also additives you can add to regular paint to make it flame retardent.
Lisa
Rotation.org's Sunday School Lesson & Resource Forums
We are an online community of Sunday School teachers, Christian educators, and pastors creating, collecting, and sharing free and premium Sunday School lesson plans, creative ideas, and discussion. We are also the official website of the Workshop Rotation Model (The "WoRM"), a creative way to organize and teach Sunday School. Visit our Bible story lesson forums. View our creative Writing Team Lesson Sets. Explore our 24 downloadable Bible story software programs. Get a free Registered Membership or become a Supporting Member for full access to all site resources. Learn more about our volunteer-led, ecumenical, non-profit, ad-free resource ministry!