Interlux Interdeck provides an excellent slip resistant finish with a tough polyurethane resin that protects decks against everyday wear and tear. It contains a fine aggregate and will apply easily on all substrates. Interdeck has a low sheen finish to reduce sun glare from decks. Ready-mixed Polyurethane Non-skid Finish. Contains fine mineral additive for hard wearing, non-slip surface Suitable for all substrates. Apply straight from the can with brush or roller.