<p align="center"><strong><em>Abstract</em></strong></p><p>Ceiling evelopment by utilizing waste corn cobs, coconut coir with gypsum flour an the adition of latex adhesive. Variations in composition mixture coir, adhesive include sample A (0:0:100:15), B (3:3:94:15), C (6:6:88:15), D (9:9:82:15), E (12:12:76:15), and F (15:15:70:15) emphasis using a <...