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Zinsser SealCoat Universal Sanding Sealer is the ideal solution for treating doors, trim, baseboards, paneling, cabinets, shelves, furniture, floors, stairs and more. Suited for pretreating softwoods prior to staining or as a bond coat over previously coated surfaces. Creates an ultra-smooth, buildable finish that can be easily sanded for amazing final results.
From the Manufacturer
SealCoat Universal Sanding Sealer is a solution of 100-Percent wax-free shellac in denatured alcohol. Formulated using a patented process, SealCoat is guaranteed to be compatible over and under all clear finishes. It's guaranteed to remain fresh and dry to a hard film for at least 3 years after the date of manufacture.
Alan H
Reviewed in the United States on June 18, 2024
I recently purchased two matching antique bed frames made out of wood with a headboard and footboard each. They were quite dirty but otherwise in good shape. After cleaning them up, I wanted to restore the finish and add a layer of polyurethane for extra protection. After researching, I decided to start off with SealCoat since I did not know what the original stain or sealant was made of. I was so glad I found this product after searching "wood sealer" on Amazon, because you can't really find it in stores.This sealant goes on quite easily with a brush, and truly adheres to any surface, coating, or sealant. It also does a magical job of restoring a finish- my project was looking rough after a thorough clean with magic erasers, simple green, and a light sanding. After the first coat, any hazy spots, scratches, or weird water rings completely disappeared and it dried to a beautiful finish.I ended up doing two coats with a light sand (220 or finer) in-between coats. This SealCoat doesn't provide a super durable finish, so I opted to add two coats of water based polyurethane on top. The polyurethane adhered wonderfully to the SealCoat even without sanding. The project turned out great and I'm so happy I found this product which was very easy to use and produced an amazing result.
Customer
Reviewed in the United States on December 28, 2024
Didnt like using this stuff at first bc it left lines that had to be sanded back out. Especially if one side dried a little and your brush strokes went back over that same area. My buddy told me to cut it half and half with mineral spirits and now goes on perfectly.
lisa gollotte
Reviewed in the United States on September 9, 2023
Very good product. But the price is getting ridiculous.
Customer
Reviewed in Canada on May 6, 2022
Works as described in all the wood turning videos I watched
Majed
Reviewed in the United Arab Emirates on June 20, 2021
Good
Gary B.
Reviewed in Canada on April 1, 2021
Great product. But this is grotesquely overpriced for a quart at 70 bucks. You can get a *gallon* of the same stuff at Home Depot for $74 and change.
Jari Karppanen
Reviewed in the United States on September 5, 2020
Technically it's not needed to use additional products under polyurethane clear coats. However, laying down the first water-based clear coat on bare dry wood has some challenges. The grain is going to pop up, necessitating additional sanding. The dry wood is going to suck the water and the clear coat is going to dry extra quick, not allowing it to self-level as well as it could. It will take up to several hours for a polyurethane clear coat layer to cure enough for the next coat. Good clear coats are costly. Putting down more layers of conversion varnish would require mixing another batch with hardener, contributing to additional waste.Seems like this product is best applied by liberally splashing it onto the wood and gently rubbing around with a rag. Trying a brush or pad is too slow and it's going to gum up within seconds. Sanding is somewhat annoying because shellac sticks to the sandpaper discs easily. However, there won't be any isocyanate dust. There's less harsh chemicals: MSDS says this has just shellac, ethanol and isopropanol.Applying shellac before water-based clear coat does change the color of the final finish a bit, making it look slightly more like oil based polyurethane was used
Ralph Pelz
Reviewed in Germany on July 27, 2019
Tolles Zeug, nur leider schwer zu beschaffen und dann mit hohen Transportkosten
Customer
Reviewed in Canada on October 5, 2019
Finish saver
Elijah Stephens
Reviewed in the United States on April 12, 2018
This stuff has so many uses. My biggest hobby is woodworking and I have found so many uses for this stuff. I use it on the top of my assembly bench to keep the hardboard surface smooth and looking good. It makes any type of water based liquids I might spill absorb a lot slower so I have time to wipe them up before it completely destroys my work surface. This stuff works perfectly as a wood conditioner. If you are staining a wood that is prone to blotching. A cut of this stuff with some denatured alcohol with do the trick. You can also use it when you are staining really porus wood species to control the amount of the stain that is absorbed into the wood. Its uses do not stop there though. A couple coats of this stuff on some MDF and it seals it up quite nicely. If you are painting any type of wood and you want a glassy smooth finish. Use this as your initial coating. Sand it smooth then prime it or paint directly over it. You can also use Zinsser Shellac based primer for this, but this seal coat is a little easier to work with. This seal coat does not add that unwanted yellow hue to any wood. You can also tint it with dye. I always keep few quarts of this stuff in my shop.
JC Craftsman
Reviewed in the United States on September 15, 2014
I found this product a secret widely known by woodworkers as the simplest and best way to:1. Seal bare woods from blotching (such as pine or maple) allowing stain to absorb into the wood in a uniform manner.2. Highlight the grain in pale and medium colored woods (oak, maple, pine, cherry etc) where the grain is to be highlighted, especially important when using a topcoat of clear water based polyurethane. The difference from only using water based poly is striking. Cherry and maple do3. As a tie coat prior to a topcoat or after switching to a different type of topcoat (from latex to oil or reverse).A few notes:1. You DO have to apply a topcoat over this product, either stain or stain and polyurethane etc. The dewaxed shellac is not used as protection against wear.2. This differs from regular shellac in that it does not have wax in it (thus the dewaxed on label). You cannot apply stain or poly over a product containing wax like regular shellac, but you can with this Sealcoat product.3. It thins and cleans up with denatured alcohol which is generally not recognized as toxic - unlike paint thinner,4. It dries in 10 minutes as the alcohol evaporates (thats not a typo).5. Note that shellac has been around for thousands of years (use well known by the Egyptians) so its not the kind of product "seen on TV"Hope this helps,
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