Common roofing structure

1. Need suspended ceiling to preserve heat.
2. If use flat tile, just change downstream bar to tile bar.
3. If use blue tile, just felt the tile and panel with sand plasm. Have no use for the downstream bar and tile bar.

The structure of heat-preservation & insulation roofing

1. If use flat tile, just change downstream bar to tile bar.
2. If use blue tile, just felt the tile and panel with sand plasm. Have no use for the downstream bar and tile bar.