Rigid URETEK material does not have any detrimental effect on the environment due to decomposition or degradation.

Rigid and flexible URETEK materials were tested at a disposal site and evaluated after three and five years.

The URETEK material, although discolored, had not changed structurally. Analysis of the leach ate water did not show a noticeable deviation in composition from leach ate water derived from waste did not contain URETEK material.

The stability of URETEK material is well documented as noted previously. The chemical and solvent resistance of URETEK material is quite good, and resistance to grease and oil is excellent.

Rigid URETEK materials will swell in aromatic oxygenated solvents, but will regain their original properties when dried. They are stable in water solutions of common detergents, salts, acids, and bases.

Strong acids and bases attack the rigid URETEK material and cause chemical degradation. Polar solvents can damage the URETEK material, but it has limited solubility in these chemicals.

Rigid URETEK material is inert to mildew and fungi and will not get moldy or decay. The URETEK materials do not nourish insects or rodents. The are chemically neutral. When exposed to sunlight, ultra-violet rays cause a yellowing of the URETEK material and an embitterment of the surface.