The final destination of the industrial solid residue is a preoccupying factor in relation to the environment and the man, therefore its potential of pollution can affect air, the ground and underground waters. In this study, the effect in some properties of the technique of manufacture of the Panels MDF (Medium Density Fiberboard had been investigated). The residues wooden (sawdust), asparagus (Asparagus Officinalis) and bagasse of the sugar cane because of its availability had been chosen. The modulate of rupture and modulate of elasticity, content of humidity, dosage of formaldehyde, swell in thickness, density and thermal conductivity had been determined. The results gotten with the materials used in all the assays had been next to the values of literature and commercial standards.