The Best Steps for the Best Coat Matthews Paint Substrate Preparation Guide Select your substrate from the list below. Steps to Success .................. Important Notes .................. 2 Wood ............................. 20 3 MDO, MDF, Extira, Scooter Board ................... 20-21 Aluminum .......................... 4-6 HDU (Sign Foam) ............... 22 Anodized Aluminum ............. 7 Fiberglass ........................ 23 Aluminum Composite ........... 8 Limestone ....................... 24 Steel ................................ 9-12 Granite ........................... 25 Powder Coated ................... 13 Cement ........................... 26-27 Steel or Aluminum Repairs ..... 13-14 Drywall ........................... 27 Painted Surfaces ................. 15 Polypropylene, Polyethylene 28 Body Filler ........................ 16 Glass and Porcelain ............ 28 Acrylic ............................. 17 PVC ................................. Photopolymer ..................... Polycarbonate .................... Vinyl ................................ Trim Cap ........................... Flexible Face ..................... EPS Polystyrene .................. 17 Clear Coats Preparation Recommendations 18 Matthews Topcoat, 18 Aluminum ....................... 28-29 19 29 Acrylic, Polycarbonate ....... 19 19 Vinyl, Trim Cap, Brass, Copper, Bronze ................. 19 Luminore, Wood................ 30 31 Matthews Paint Substrate Preparation Recommendations. These guidelines are to be used as recommendations only. Matthews Paint is a trademark of PPG Ohio, Inc.