Frequently overshadowed by solid wood, MDF is the unsung hero of the modern British home. Working with MDF: Expert TipsWhile MDF is versatile, it does require a specific approach to get the best results:Seal the Edges: The edges of an MDF sheet are more porous than the face. Before painting, use a dedicated MDF sealer or a diluted PVA mix to ensure the paint doesn’t just soak in. Before painting, use a dedicated MDF sealer or a diluted PVA mix to ensure the paint doesn’t just soak in. Use the Right Fixings: MDF doesn’t hold screws in its edges as well as solid wood.