Previously Platinum Patch, now Weatherproof Patching Compound delivers the same breakthrough premium exterior filler. It is formulated for the most demanding exterior jobs with superior multi-material adhesion to porous and non-porous materials including fiber cement and vinyl siding, PVC trim board, composite decking and fencing, metal, mortar, wood, brick and more. It's formulated with advanced WEATHERMAX Technology, providing powerful weatherproof protection to prevent discoloration, cracking, crumbling or other damage that could be caused from harsh weather. Its tough hydrophobic surface provides a waterproof repair that won't swell, soften, blister or break down and is mold, mildew and algae resistant making it perfect for areas with continuous exposure to the elements. DAP Weatherproof Patching Compound ready-to-use formula is shrink and crack resistant, easy to sand, paintable, low in odor with easy water clean-up.