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Aqua Coat Clear Wood Grain Filler, Pint
Aqua Coat Clear Wood Grain Filler, Pint Item #56270
In stock
$22.99 Pint
Aqua Coat Clear Wood Grain Filler, Quart
Aqua Coat Clear Wood Grain Filler, Quart Item #52279
In stock
$39.99 Quart

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Aqua Coat Clear Wood Grain Filler

Fills in the pores of open-grained woods like oak, ash and mahogany for an exceptionally smooth finish.

Item #
82% of 100

Aqua Coat Clear Wood Grain Filler is a water-based, low-odor gel that fills in the pores of coarse or open grained woods. Once paint or varnish is applied, it results in a remarkably smooth surface—a dramatic difference over pieces without pore filler. It's ideal for smoothing out the grain on oak cabinets, or to prep for a high-build, high-gloss finish on mahogany furniture. The fast-drying formula sands and levels quickly. Since it's clear, it can be applied on raw wood or over stain and sealers while permitting grain and color to show through.


  • Crystal clear—allows grain pattern and color to show through
  • Dries in just 30-45 minutes for a fast build
  • Easy-to-apply, easy-to-sand and easy-to-clean-up
  • Nonflammable, low-odor and low VOC
  • Can be tinted with water-soluble colorants or dyes
  • Can be thinned with water and cleans up with water
  • Minimal shrinkage
(1) Aqua Coat Clear Wood Grain Filler - Pint
(1) Aqua Coat Clear Wood Grain Filler - Quart
More Information
Tech Spec
  • Container Size: Pint or Quart
  • Color: Clear
  • Dry Time Between Coats: 30-45 minutes
  • Recommended # of Coats: 2-3
  • Consistency: Gel
  • Cleanup: Water
4.1 / 5.0
37 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
worked as promised
Used on a flat surface walnut carving board. Wanted to make sure food product could not live on in the wood grain. Goes on easy, sands easy, cleans up easy. I like it!!
May 27, 2018
over 2 years ago
Woodworking Experience:
Not recommended for food contact
I would not chance this stuff on cutting boards or any other food-contact item. Check out the MSDS, then use something like walnut oil or mineral oil mixed with beeswax for durability and shine.
May 17, 2019
Woodworking Experience:
Not as transparent as I would have liked
This seemed to dull the color of the woods I tested it on. It did fill the pores and it was easy to work with. I intend to try tinting it for use with mahogany and oak to see how that works out. Otherwise, I'll likely stick with shellac and French polishing.
January 17, 2019
1 year ago
Woodworking Experience:
Takes many coats
Product is easy to work with but shrinks. It takes many, many coats since it shrinks to a thin film during drying. Took much longer than convention grain fillers. It leaves a clear film over the wood. Would definitely not purchase again.
January 26, 2019
Woodworking Experience:
Don’t use this product
I used this product according to instructions. It formed a subsurface membrane beneath a water based polyacrylic that dimpled the surface beyond repair. I removed all the finish to the bare wood, reapplied Aqua Coat, and this time used an oil based polyurethane. Once again a dimpling occurred that forced me to take the project to bare wood. This product has cost me hours in refinishing and many dollars in sanding products.
September 24, 2019
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Browse 15 questions Browse 15 questions and 32 answers
Why did you choose this?
Rockler Store
good online first hand reviews
Richard K on Jul 21, 2018
seal the grain
David S on Jul 3, 2018
good online first hand reviews
Richard K on Jul 21, 2018
I'm refinishing oak cabinets and I'll be painting them and I don't want the grain to show through.
Catherine M on Jul 7, 2018
seal the grain
David S on Jul 3, 2018
I have seen a demonstration on the use of this product and want to try it.
William M on Jun 25, 2018
good reviews and want to custom tint.
James M on Jun 24, 2018
April Wilkerson used it and I want to try it out.
Christopher J C on Jun 13, 2018
I am completing a project in walnut and want something other than a mis-matched colored filler
Michael I on May 2, 2018
Looking for a clear wood sealer to go over a stained guitar body
Phillip Farabough C on Apr 25, 2018
I'm refinishing oak cabinets and I'll be painting them and I don't want the grain to show through.
Catherine M on Jul 7, 2018
I have seen a demonstration on the use of this product and want to try it.
William M on Jun 25, 2018
What is the coverage area?
Al on Apr 21, 2018
BEST ANSWER: 112sf per qt, according to manufacturer specs.
Can I us this over a oil based stain and then apply poly urethane?
Mike W on Apr 4, 2020
BEST ANSWER: Yes, but I would put a coat of poly on the stain and then apply the clear filler to give yourself a better chance of not sanding through the stain when you sand this if needed. Also I found that it made it so much easier to see where to apply the clear filler with a layer of poly over the stain first. Test on a scrap first always though. I actually had 3 thin coats of poly on hoping to not have to fill and then had to fill and then another coat of poly.
Do you apply with brush or wipe on?
Dsvid J on Aug 17, 2018
BEST ANSWER: While I have not used this product yet, I have viewed several you tube presentations and have observed that it is applied with a plastic type wide blade, not with either a brush or cloth. Remember it is designed to fill indentations in the grain which would not be properly filled otherwise. Think of how you would apply drywall compound to an indentation in sheetrock, only on a much smaller scale. Also it requires at least a second application to obtain a smooth surface. Hope this helps.
Can I stain after sanding and applying the wood filler?
Brenda C on Apr 1, 2020
BEST ANSWER: no. I would recommend using a Gell stain first, then filling the grain with Aqua Coat.
If put on raw wood can it still be stained?
GARY L. on Jan 16, 2019
BEST ANSWER: Some stains will work just fine through this. The product has instructions on it for tinting the pore filler, as well as for dyeing or staining. And with any finish product like this, try your finishing process on some scrap first to see how it works out before using it on your project.
i will be using the product on very dark wood [wenge] .does it dry clear ?
Cory R on Dec 9, 2018
BEST ANSWER: Hello, I usede this product most recently on an antique white oak toolbox. On the natural color oak it was impossible to see where the clear coat had been applied, it appeared to be crystal clear. I would expect that it will not add any color to your workpiece. I also found that it was smoothed best by a card scraper, fine sandpaper could scrape it below the surface in the picks, the card scraper remains at the surface and only removes high spots. I did find it dulled the scraper pretty quickly, I guess it's pretty hard when it dries.
I am painting my Oak Cabinets white and saw that I could use this to seal the wood grain. Do I also prime after I use the filler? then paint?
Margie L on Jul 20, 2018
BEST ANSWER: Hi, It is not necessary to use primer to seal the filler. It does however depend on when you will sand for final smoothness. I like to use a sanding coat of paint over the filler, then sand with very fine grit, like 320, to get ready for the finish coat. If you know about wet sanding, this is a good time to use that technique.
Can this gel be used on exterior surfaces?
Jan B on May 10, 2020
BEST ANSWER: I talked to the technical team at Aqua Coat and it can be used on exterior wood. They emphasized this is a pore and grain filler and not for use in large cracks or old wood. Once it is dry, it would be best to put a topcoat of paint or spar varnish on top.
Has anyone tried applying with a buffer?
Janelle M on Feb 20, 2020
BEST ANSWER: it won't work that was as the flash time in only a few minutes. I have great results just applying it with a gloved hand or paper towels it dries in minutes so you can get 3 coats in about 1 1/2 hr
Can this be tinted?
Linda M on Feb 8, 2020
BEST ANSWER: Hi. I have not tried to tint it before application, it might be difficult to get the right mix to match the wood. I have found that when you work it with oak it gets darker presumably from tannins in the wood. I have stained after application and had success.
Is this suitable for exterior use? I'm refinishing doors.
John M on Nov 3, 2019
BEST ANSWER: This product will remain under your topcoat your topcoat is your key to UV light oh no topcoat can survive you really like it just postponed itEnter an answer to this question.
Can I use an oil based finish (e.g. Waterlox) after using this to fill the pores?
ANDREW O on Jan 9, 2019
BEST ANSWER: Hello, yes I have used oil base primer as well as shellac and varnish as first coats on various interior projects with great results. I use a card scraper to do the final smoothing but it gets dull faster than when used on hardwood. I have found that his material dries very tough and sticks like crazy.
can you finish with an oil based topcoat such Arm R seal?
J G on Jan 3, 2019
BEST ANSWER: Yes I do believe so.
Is this product compatible with pre cat laquer?
Mark M on Sep 11, 2018
BEST ANSWER: I used Shopline JC630 polyurethane clear over this product and it worked great
it says on the jar to allow overnight dry time before final coats of finish are applied? Does this mean although it dries in 45 min that you must wait overnight to paint?
Viki N on Aug 26, 2018
BEST ANSWER: Yes, it takes 24 hours to safely cure and off gas.