Rockcote Quick Render Premium Sponge is a pre-blended cement render. Properly cured, Rockcote Quick Render Premium Sponge exhibits minimal drying shrinkage and is a reliable surface for over-coating with acrylic textures and paints. Rockcote Quick Render Premium Sponge is simple to mix and easy to apply and finish and can be used in skim coat applications. Rockcote Premium Sponge can be applied as thin as 2mm, without the need to add extra bond to the mix.