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Sanding sealer is a base coat that seals wood pores beforepainting.
Projects can be finished faster and with less effort because fewer coats of paint are required.
Use sanding sealer when painting or coating cabinets, furniture, doors, and more.
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Sanding sealer improves the condition ofsubsequent coats of paintor clear finish by sealing the wood pores.
Learn how to use sanding sealer, sanding sealer’s best applications, and where to avoid using it.
Is sanding sealer also polyurethane?
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Sanding sealer is like polyurethane coating but with one difference: zinc stearate additive.
Zinc stearate helps the sealer produce a higher build, giving you more material to sand.
Plus, it acts as a lubricant to reduce drag when sanding.
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Do not use sanding sealer as a top coat.
Safety Considerations
Sanding sealer is a toxic substance and should be handled with care.
Use sanding sealer only in well-ventilated areas.
The Spruce / Kevin Norris
Methoxymethylethoxy propanol is toxic and can be absorbed through the skin, so wear latex gloves and protective clothing.
The best grit options are 220 or higher.
Mix the Sanding Sealer
Gently mix the sanding sealer with a stirring stick.
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Do not shake the can, as this creates bubbles that hamper smooth system.
Tip
Water-based sanding sealer will raise the wood grain.
If you’d like to minimize this effect, switch to oil-based sanding sealer.
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Apply the Sanding Sealer
Dip the paint brush in the sanding sealer.
Completely cover the wood surface with a thin coat of the sanding sealer.
Do not apply a second coat at this time.
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Water-based sanding sealer looks white and milky when first applied to the wood.
It will eventually become clear.
Clean up water-based sanding sealer with warm water, mild soap, and rags.
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If you are pressed for time and want a more finished look, sanding sealer is a great option.
Sanding sealer is recommended for wood that is outdoors and can be prone to humidity or high moisture.
Wood varnish is commonly used on wood that is indoors and less likely to be damaged by elements.
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No, you should not use sanding sealer in place of primer as the two products serve different purposes.
Using the two interchangeably can affect the finish of the wood.
Dipropylene Glycol Methyl Ether ((2-Metholymethylethoxy)Propanol).United States Department of Labor.
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Wood Dust - Health Effects.Canadian Centre for Occupational Health and Safety.
