Stain Blocking Primer For Wood. A stain blocking primer is designed to provide more robust coverage and prevent stains from bleeding through newly applied layers of paint. Ad browse paint primers from trusted brands.
![Zinsser BIN Primer Stain Block, a primer, sealer and stain killer](https://i2.wp.com/holmanpaints.co.uk/236-superlarge_default/zinsser-b-i-n-primer-stain-block.jpg)
A stain blocking primer is designed to provide more robust coverage and prevent stains from bleeding through newly applied layers of paint. Latex paints have stain blocking abilities, but in my experience they only provide marginal coverage. Over one million online items eligible.