Is MDF Waterproof? How to Seal MDF (Easy Steps)
Start by sanding the MDF board using medium-grit sandpaper. This helps in preparing the surface for primer. Make sure you sand the edges as well since MDF edges are particularly absorbent. Once you've finished sanding, wipe down the board with a clean, dry cloth to remove any dust or debris. Step 5: Apply Primer Sealant
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