It will seal all stains that may bleed through and discolour the paint. During that process you will be issued with an RMA number.
Rustins Stain Blocker & Multi-Surface Primer 250ml- Versatile All-Surface Primer for Blocking Stains and Sealing Porous Materials; Optimal for Walls, Ceilings, and Wood
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Rustins Stain Blocker & Multi-Surface Primer 500ml -Versatile All-Surface Primer for Blocking Stains and Sealing Porous Materials; Optimal for Walls, Ceilings, and Wood
