Zinsser Cover Stain 1 qt. Oil Base White Interior/Exterior Primer and Sealer sticks to any surface without sanding. Exceptional stain killing power, its oil-based formula effectively seals stains from water, smoke, fire, nicotine and blocks tanning bleed. It offers excellent flexibility and adhesion.
Ideal for interior or exterior use such as sealing exterior wood and blocking tanning bleed
Covers up to 100 sq. ft.
High hiding all surface primer hides dark colors and seals most interior and exterior stains
Oil-based formula provides excellent adhesion to all surfaces without sanding
Ensures longer life of top coats
Fast-drying oil-based formula provides exceptional stain killing power, hides dark colors and blocks stubborn stains from water, smoke and more
Dries to touch in 30 minutes
Clean up spills and drips with a rag soaked in mineral spirits
Online price includes PaintCare fee in the following states: CA, CO, CT, DC, ME, MN, OR, RI, VT, WA
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Coating Product Category
Dry to touch (min.)
Number of coats recommended
Number per Package
Paint/Stain Clean Up
Paint/Stain/Waterproofer Product Type
Color Changing,Stain Blocking
Substrate/Surface Use Type
Warranty / Certifications
Satisfaction guaranteed for full refund of purchase price
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out of 535 reviews
85% recommend this product
Showing 1-10 of 535 reviews
Mar 24, 2021
I painted my house about 8 years ago I used Zinsser Cover Stain oil base primer, premium caulk and a premium latex top coat, the house had new factory primed hardboard siding, the trim and fascia are wood. The preparation consisted of removing all loose paint by scraping and sanding. The house was power washed and tested for moisture content before applying primer. The gable and eve fascia began peeling within a couple of years now 8 years later most of the finish has peeled off exposing bare wood and a small areas of paint has peeled off of the siding. Maybe the primer was old, I had Home Depot machine shake all three 5 gallon and a 1 gallon cans then they were hand mixed prior to application by airless sprayer so the mixing should not have been a problem with adhesion failure. I feel sure that power washing the now house would take a the finishoff of the siding. I expected the paint to last longer than 8 years. Now the preparation and painting the 3 gables, eves and the window fascia needs to be prepared, primed and painted again. The painting should have lasted 15 years and it would have had the pruner not failed. I am quite disappointed in the performance of the primer, a huge waste on my time and money.
Response from Rust-OleumSupportMar 25, 2021
Thank you for sharing your experience with Rust-Oleum Zinsser Cover Stain Oil-Based Primer. Please keep in mind, the life of a coating is dependent on several factors, including the condition of the surface and the elements it is exposed to. With a primer the topcoat used can also factor in. With this primer, with proper surface prep and application, it will last for several years. - Rust-Oleum Product Support 3
Sep 8, 2020
This primer is thick in texture, it covers yellow stain on ceiling and wall from leak perfectly, ...
This primer is thick in texture, it covers yellow stain on ceiling and wall from leak perfectly, also kills mold. No sanding, and no prep work is done, just used a fan to blow the ceiling completely dry. Two coats applied by using a 4" roller and a 1" foam brush for corners. This primer alone is good enough for me.
1 person found this helpful
Jun 2, 2020
Painting over douglas fir siding that had not been painted in 20 years this primer saved a lot of...
Painting over douglas fir siding that had not been painted in 20 years this primer saved a lot of money caused a lot sweat but its worth it looking at the finished product. The primer sealed the wood and helped paint suckin in to the untreated wood. Will last a long time and look good for ever. Great Product.
May 31, 2020
The primer worked very well. There was no bleed when painting over knots which were on my boards...
The primer worked very well. There was no bleed when painting over knots which were on my boards. After applying a second coat there was no bleed through with the finish coat. There was also good adhesion and fair coverage on bear metal. In summary the performance was very good.
May 26, 2020
Water stains and tannins bleed right through
Bought this to finish up priming the walls and some wood shelves in my garage. Both had some water damage so I was careful about buying primer that would cover it. I had started the project with Ben Moore’s INSL-X Prime Lock Plus, which covered the stains perfectly, but I ran out and bought some of this Zinsser stuff instead since I live near Home Depot. What a mistake! Every water stain and tannin bled right through. What a waste of a beautiful afternoon. Wish I could get a refund. Looks like I’ll be buying more INSL-X and redoing the job next weekend.
Response from Rust-OleumSupportMay 29, 2020
That's odd, Jen! Rust-Oleum Zinsser Cover Stain Oil-Based Primer is great for blocking both water stains and tannin bleed. Since this is a primer, it will trap most stains in the film to prevent bleed through with the topcoat. - Rust-Oleum Product Support 3
May 6, 2020
Ive used several different primers over the years but always come back to this one. It sticks to almost anything and you can use anything with it. It hides stains and tanins fron wood. I used a latex primer to prime oak cabinets, but was dealing with tanin bleed through. I used this over the latex primer and it completely hid the tanins in one coat.
1 person found this helpful
Sep 10, 2019
This paint worked well on my trailer and within days of application it rained and the paint held ...
This paint worked well on my trailer and within days of application it rained and the paint held up well.
Jun 18, 2019
Primer when sprayed dries pretty smooth with light sanding required for finish applications. I sp...
Primer when sprayed dries pretty smooth with light sanding required for finish applications. I sprayed some stained cabinets & works perfect.
2 people found this helpful
May 28, 2019
Was able to cover 30+ years of nicotine staining and odors. Needed more than what was recommende...
Was able to cover 30+ years of nicotine staining and odors. Needed more than what was recommended coverage by the manufacturer though. Still not a concern - great product.
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