4 Pack, White, Zinsser Flat Cover Stain Oil Base Primer- Gallon
4 Pack, White, Zinsser Flat Cover Stain Oil Base Primer- Gallon
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4 Pack, White, Zinsser Flat Cover Stain Oil Base Primer- Gallon

225 ratings
4 Pack, White, Zinsser Flat Cover Stain Oil Base Primer- GallonWhite Zinsser Flat Cover Stain Oil Base Primer Gallon 4 PackWhite Zinsser Cover Stain Flat Oil Based Interior and Exterior Primer and Sealer 345249 QuartWhite Zinsser Cover Stain Oil Base Primer 3500 5 GallonWhite Zinsser Cover Stain Low VOC Stain Blocker Primer Flat 271448 GallonWhite Zinsser Cover Stain Oil Base Primer 3504 QuartWhite Zinsser Cover Stain Flat Oil Based Interior and Exterior Primer and Sealer Spray 3608 13 oz
Size4 gal
Actual ColorWhite/Base
Count Per Pack4

Key item features

  • Versatile Application: Designed for interior and exterior use on various surfaces including painted drywall, cured plaster, cement, wood, brick, and block.
  • Oil-Based Formula: This oil-based primer effectively seals, blocks stains, and provides excellent adhesion to a wide range of surfaces.
  • Rapid Drying: Dries to the touch in 30 minutes and can be recoated after just one hour, facilitating quicker project completion.
  • Flat White Finish: Dries to a flat white finish and can be cleaned up using mineral spirits.
  • Stain Blocking: High-hiding formula blocks most stains, including those from water, smoke, fire, nicotine, tannin, cedar, and redwood.
  • Sanding-Free Adhesion: Provides excellent adhesion to all surfaces without the need for prior sanding.
  • Multi-Purpose Sealer: Functions as an all-purpose, all-surface primer and sealer, preventing bleeding from various stain types.
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Customer ratings & reviews

4.4 out of 5 stars
stars
225 ratings87 reviews
How item rating is calculated
  1. 5 stars76% (170)
  2. 4 stars9% (21)
  3. 3 stars4% (8)
  4. 2 stars4% (8)
  5. 1 star8% (18)

Reviews summary

Pros

  • : Provides coat on various surfaces.
  • : Effectively seals rough cut wood with one coat.
  • : The formula spreads evenly, covers well, and dries quickly.

Neutral

  • : The product undercuts big-box prices but some cans remain costly.
  • : Can be effective, but inconsistent in blocking stains.
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Showing 1-3 of 87 reviews

Mar 10, 2026
Reviewer name: PawValleyRanch
Item details
Size: Quart
Color: White/Sealer-345249
Count per pack: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

This was thick, making it easy to paint on the celling. It took 2 coats to cover the water stain i was working on but it did cover. One thing to note is that it is VERY bright, blue toned, white in color. i use white celling paint and or was much brighter.

Helpful?0TKJLLIR2IP0521592895
Nov 13, 2025
Reviewer name: Amy
Top Reviewer
Item details
Size: Gallon
Color: White/ Flat-271448
Count per pack: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Pricey but worth it

We are using this to seal up rough cut lumber and logs used in the construction of a cord wood home. This product is the best I have tried (and have tried many), after one heavy coat it completely seals in and primes extremely rough cut wood, its so smooth after one coat I can hardly believe it. Pricey but worth it.

Helpful?0TKJLLIR2IP0521592895
Jun 1, 2024
Reviewer name: Abby
Item details
Size: Gallon
Color: White/Sealer-3501
Count per pack: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Does what it says.

I ripped up my dining room carpeting and laid a thin coat across the OSB that was beneath it. I plan on painting the OSB board and sealing it until I can either afford linoleum or laminate flooring. This product covered up any stains/odor that was present. The only downside is the smell of the product itself. It's been about 2 weeks and the odor is still very present. Overall I'm very happy as it did everything it said it would.

Incentivized Review
Helpful?0TKJLLIR2IP0521592895
Current price is $139.92$34.98/gl
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