HPL (High-Pressure Laminate) Composition of HPL tops HPL panels are made of wood fiber or layers of paper mixed with synthetic resin. These are pressed together under high pressure and at high temperature. A chemical reaction occurs, which gives these HPL panels their unique features. HPL is weather proof HPL is resistant to weathering; the material is moisture-resistant and fungus-free. HPL has UV stability HPL retains its color even after many years due to its UV-resistance on both sides. HPL is light HPL is far lighter than natural stone, yet self-sustaining and extremely strong. HPL is resistant against impacts HPL retains its shape and can take a bit of rough handling. Sharp object, however, might cause scratches! That's why we prefer to advise you our ceramic, who is unschratchable!