Have a really tricky surface to paint? Our Ultra Grip/Bonding Agent allows for Fusion™ to adhere to surfaces that are typically not for painting such as a lacquered surface, melamine, thermofoil or laminate. Non toxic, waterbased ultra grip that makes painting the impossible, possible!    Times when primer is recommended:   There is only 2 reasons you would need to prime. For adhesion, or to block stains and wood tannis from coming through the paint film. 1. To block stains and wood tannins/bleed through apply Zinnser Shellac BIN primer. This is also recommended for knotty pine. Here’s a video on this https://youtu.be/aAvRz6gl6XE 2. For extra adhesion on shiny, slick surfaces like Thermofoil, Melamine, some laminates and very high gloss detailed carvings that can’t be scuff sanded to de-gloss : Ultra Grip allows you to paint the impossible, it acts like an ultra adhesive primer for those exceptional very difficult surfaces. Here’s a video on this https://youtu.be/6LBw9IWjCYE People often use a 'primer' undercoat to go from a dark colour to a light colour. This is not required, instead try using a transition colour like Sterling grey or our transition Transition to help cut down the number of required coats overall. Here is some more information on Transition https://youtu.be/nPVFc7TpETs These lighter mid-tone colours will act as a colour transitioning primer and make the switch to pure whites easier. Watch this https://youtu.be/G30eIVq3yfc