Renner Primers
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2025/07/23
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Renner primers are engineered for performance, offering excellent adhesion, stain blocking, and sanding properties across a range of wood substrates. Whether you're sealing MDF, blocking tannins, or prepping for a high-end finish, there's a Renner primer to match your needs. Primer Overview: 643 Primer – 1K or 2K | Catalyst boosts adhesion, stain blocking, and tannin resistance C085 – 1K | User-friendly bonding and stain-blocking primer C321 – 1K or 2K | Water-based sanding sealer with a solvent-like look and feel C674 – 2K | Barrier coat for sealing tough or unpredictable substrates 648 – 1K or 2K | High-build primer, popular for MDF or as a higher-performing alternative to 643