B51W620 (2024)

1. PrepRite® ProBlock® Primer/Sealer - Sherwin-Williams

  • Assures a uniform topcoat appearance, blocks stains and has an improved long-term adhesion and performance.

2. [PDF] EDS B51W620 - PaintDocs.com

  • May 12, 2024 · Variations may occur in individual batches due to adjustments made during production. Hazard Category (for SARA 311.312). B51W620 = | Acute | ...


  • WARNING! Removal of old paint by sanding, scraping or other means may generate dust or fumes that contain lead. Exposure to lead dust or fumes may.

4. [PDF] ProBlock Primer Sherwin Williams (PDF) - SAFETY DATA SHEET

5. PrepRite ProBlock Interior/Exterior Latex Primer/Sealer

  • PrepRite ProBlock Interior/Exterior Latex Primer/Sealer · Star rating out of 5 · Not Yet Rated · Write a Review.

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6. [PDF] PrepRite® ProBlock® Interior-Exterior Latex Primer-Sealer - PaintDocs.com


  • Not applicable. B51W620. B51W620. Product code. : Product Information. Telephone Number. : US / Canada: Not Available. Mexico: Not Available. Regulatory ...

8. [PDF] Environmental Product Declaration – PrepRite ProBlock®1 | NSF

  • This is consistent with the reference PCR. Table 2. Formula Lifetimes and Quantity of Coating Needed to Satisfy Functional Unit. Product Formula. B51W620.


  • Jul 24, 2013 · B51W620. PRODUCT NAME. PrepRite® ProBlock® Interior/Exterior Latex ... Get medical attention immediately. SECTION 5 — FIRE FIGHTING MEASURES. Page ...

10. [PDF] CHEMMI-128 Version 1.0 – Created 6/11/2021 Contact - NSF

  • Jun 11, 2021 · Manufacturer's Inventory for PrepRite® ProBlock® Interior/Exterior Latex Primer: This shall serve as the Manufacturer's Declaration of the ...

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B51W620 (2024)


What is PrepRite ProBlock used for? ›

A proven performer, Sherwin-Williams PrepRite ProBlock Interior/ Exterior Latex Primer/Sealer is a great overall priming solution. This premium primer assures adhesion of the topcoat — including to slick, glossy surfaces — and seals out solvent-sensitive stains and minor dried water stains and tannin.

How long does it take for ProBlock primer to dry? ›

After priming, allow to dry 4 hours, test a small area for bleeding by applying the topcoat before painting the entire project. If the stain bleeds through, apply a second coat of primer and allow to dry overnight and retest before topcoating.

How to use ProBlock primer? ›

Thoroughly clean the surface before applying to smoke-stained areas. Apply one or two coats of Multi-Purpose Latex Primer/Sealer and test a small area for bleeding before painting the entire surface. Testing: Always check for compatibility and adhesion to the surface by applying a test patch of 2-3 square feet.

Is pro block a bonding primer? ›

Excellent stain-blocking characteristics. Bond coat designed for priming many surfaces. Seals many surfaces. Assures uniform appearance of the topcoat.

Can you spray pro block? ›

ProBlock® now has improved maximum stain blocking and sealing performance for resistant odors and stains such as smoke from fire damage, pet odors, water stains, tannins, wood knots and more. Now available in gray, with an easier spray tip!

Can primer dry too long? ›

"Most latex primers dry in 30 minutes to an hour, but for best results, don't paint until the primer completely dries, which can take up to three hours depending on temperature and humidity," Woelfel suggests. Latex primers are water-based, which Hayfield says typically dry faster than solvent-based primers.

How long do you let primer dry before sanding? ›


When dry, surface can be immediately recoated, top coated, or wet sanded. For best results, allow to Primer to dry for 1 hour before dry sanding. Test in an inconspicuous area to be sure Primer is dry enough for sanding.

How long does primer stay wet? ›

It takes approximately 24 hours for a typical primer to dry. However, depending on the type of primer and the conditions under which it is applied, the drying time can vary significantly. For example, oil-based primers may take up to 48 hours to dry completely, while water-based ones typically dry much faster.

How do you know when primer is ready? ›

Most latex primers dry to the touch in 30 minutes to one hour. But for best results, don't paint until the primer completely dries—which can take up to 3 hours, depending on temperature and humidity. Once the primer is completely dry, it's prime time for painting.

Do you sand each coat of primer? ›

Once you've completed your last coat of primer, you should go ahead and sand before applying your first coat of base color. However, there is no reason at all to sand between coats of primer. It will only add more work to your plate with no visible benefits.

Do I shake primer? ›

Once your area and surface are prepped, shake the primer can vigorously for one minute after the mixing ball begins to rattle, and shake often during use. Hold the can upright, moving from side-to-side while spraying lightly and evenly about 12″ from area being painted.

When should you not use bonding primer? ›

(Note: Bonding primers are not recommended for use over peeling paint).

How long does problock primer take to dry? ›

After priming, allow to dry 4 hours, test a small area for bleeding by applying the topcoat before painting the entire project. If the stain bleeds through, apply a sec- ond coat of primer and allow to dry over- night and retest before topcoating. Use Multi-Purpose Latex Primer over solvent sensitive stains.

What is the difference between primer and bonding primer? ›

Depending on the product, bonding primers can also offer the advantage of accommodating lots of different coatings, including hot coatings with a high solvent content. Whereas an exothermic reaction may cause a major problem with a regular primer, the premium products can accept just about anything.

Does Sherwin Williams Proclassic need primer? ›

Priming and application of two coats at the recommended film thickness can help where hiding of a previous coating or application to new drywall is a factor. If the wood has bleeding (such as tannin or knot- holes), prime with Multi-Purpose Primer. Other primers may be appropriate.

What is ProMar 200 primer used for? ›

ProMar® 200 Zero VOC Interior Latex Primer is a durable, professional quality, interior vinyl acrylic primer. It prepares and seals the surface to provide good topcoat performance. Designed for use with the ProMar Series Interior Latex topcoats providing a complete system.

How many coats of primer on new drywall Sherwin Williams? ›

Here are some examples of how a primer should be used on different surfaces, depending on condition: One Coat—New drywall, raw wood, subtle color changes. Two Coats—Damaged drywall, stained walls, rusty metal. Three Coats or More—Wood paneling, bold color changes.

What is pro cryl primer used for? ›

Pro Industrial Pro-Cryl Universal Primer is a water-based alternative to solvent-based metal primers. It can be used on all bare steel, aluminum and galvanized substrates and is ideal for structural steel, machinery, piping or equipment found in schools, hospitals, hotels, commercial buildings and industrial sites.

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