Extreme Block Interior/Exterior Stain Blocking Alkyd Primer | Sherwin-Williams

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Product Details

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Extreme Block Interior/Exterior Stain Blocking Alkyd Primer

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5 Reviews
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Extreme Block™ Stain Blocking Primer/ Sealer is a versatile indoor/outdoor formula that has the power to seal off stubbornstains like smoke, fire and nicotine and blocks tannin bleed from bare wood. This quick-dry alkyd coating can prime thesurface and be topcoated in less time than conventional two-coat systems, making it ideal for multi-family property managers, facility maintenance crews and residential repainters who need to quickly restore properties to a fresh condition.

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Sales Number: 6510-29720

Product Number: B49W00600

All prices displayed are for U.S. Sherwin-Williams locations and are in U.S. Dollars. Prices do not include taxes or other fees as applicable.

Product Details
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- Stain Blocking
- Fast drying
- Blocks and seals stains from water, smoke, fire, nicotine, knots and tannin bleed
- Multi-purpose oil-based primer
- Excellent adhesion
- High hiding
- Interior or Exterior use
- Easily sands
Available Sheens

Flat

A non-reflective appearance that helps hide surface imperfections.

Product Literature (pdf opens in new window)

Product Specifications

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Data Sheets are available in multiple languages. To view in a language other than USA - English, please select the appropriate country and language from the drop down menus.

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651029696 GHS-SDS PDS EDS 651029720 GHS-SDS PDS EDS 651044851 GHS-SDS PDS EDS

Product #	Sales Number	Container Size	Sheen	Base	GHS-SDS	PDS	EDS
B49W00600	651029720	5 Gallon	Flat	White	GHS-SDS	PDS	EDS
B49W00600	651029696	1 Gallon	Flat	White	GHS-SDS	PDS	EDS
B49W00600	651044851	1 Quart	Flat	White	GHS-SDS	PDS	EDS

Ratings & Reviews
5.0 Star rating out of 5.

Average Customer Rating

5 of 5 (100%) reviewers would recommend this item to a friend.

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Reviewed by 5 customers
- (5 out of 5) stars.
  
  Cover up
  
  December 12, 2020 by Pro
  
  First time using and wasn't disappointed. I used this to prime some stained cabinets. This hides and bonds to wooden surfaces great.
  
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- (5 out of 5) stars.
  
  Like no other
  
  April 1, 2020 by Earl
  
  I used this primer on a high end job where plaster was applied to the walls and ceilings. This product is excellent to hide all stains from coffee and beyond. Also sealed everything up very well and very fast. Great on the trim as well. After all was said and done the finish on the walls and trim is A-1. I would use it anytime again.
  
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- (5 out of 5) stars.
  
  Perfect
  
  February 10, 2020 by Brian
  
  I am a professional and this is all I use on cabinets before painting, coming from stain . It makes the final finish perfect.
  
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- (5 out of 5) stars.
  
  Cabinet refinishing
  
  February 16, 2019 by Mike
  
  We use this product for all of our cabinet jobs when painting over stained surfaces. It has excellent bonding qualities and provides a durable base for use under our preferred topcoat of ProClassic.
  
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