Bona NaturalSeal - Waterborne Wood Floor Sealer by Bona

Professional Use

3.79 L (1 gallon)
In stock
Free Delivery
Quebec, Ontario · More info

Bona NaturalSeal is a waterborne sanding sealer designed to retain the appearance of unfinished wood on your floor. Combining Bona NaturalSeal with a matte-sheen finish preserves that look and gives your floor the durability it needs for everyday life.

Bona waterborne wood floor sealers offer excellent abradability, fast dry times, and reduced potential for side bonding and tannin bleed. They are non-flammable and virtually odorless sealers.

  • Enhances the look and depth of pure wood
  • Reduces side bonding and tannin bleed
  • Excellent sandability – hardens rapidly and allows for easy abrasion
  • Fast drying – 2-3 hours
  • Seals the wood, preventing the finish from penetrating
  • Product can be rolled or pulled with a T-bar

For Professional Use Only

Do not use Bona NordicSeal or Bona NaturalSeal sealers in combination with the Bona Mega finish. Bona Mega finish has a light amber tone and must be used with either Bona IntenseSeal, ClassicSeal or AmberSeal sealers. Bona Mega ONE varnish, however, can be used with any Bona sealer.

Directions for use


  1. Sand and prepare floor using accepted industry association methods.
  2. For a stained floor, make your final cut with 80 to 100-grit paper, then multidisc with 80 to 120-grit paper. For an unstained floor, make your final cut with 80 to 120-grit paper, then multidisc with 120 to 150-grit paper. This burnishing will reduce the amount of grain raise.
  3. Use a Tampico Brush on a buffer and vacuum thoroughly.
  4. Tack with a dry Bona® Microfiber Cleaning Pad or cloth.
  5. Apply Bona Finishing system.


Apply 1-2 coats of Bona NaturalSeal and 2 coats of a Bona waterborne finish. Bona NaturalSeal minimizes side bonding and grain raise, provides a build layer and prevents the finish from penetrating into the wood surface.


NOTE: Use a clean applicator for sealer and a separate clean applicator for finish.


SHAKE WELL BEFORE USING. DO NOT THIN. As a best practice, double strain the finish by wrapping a fine mesh paint strainer or nylons around the supplied filter. Insert into bottle and trim off any excess material.


  1. Pour a 6˝- wide line of finish along the starting wall. Go with the grain of the wood.
  2. Using a pre-dampened Bona floor coater, draw the floor coater forward with the grain of the wood, moving the finish toward the opposite wall. To maintain a wet edge at all times, hold the floor coater at a snowplow angle.
  3. At the end of each run, turn the floor coater and pull it toward you through the puddle; then pad out the floor coater parallel to the wet edge.
  4. Feather out all turns. Do not push too hard or too fast to avoid drips flying off the floor coater.
  5. BE SURE YOU ARE USING THE RECOMMENDED COVERAGE OF 400-500 SQ. FT. PER GALLON. DO NOT SPREAD TOO THIN. Uneven coverage can cause blotchhiness or color variance. Certain species may require a second coat to achieve desired appearance.
  6. Allow the first coat to dry 2-3 hours. High humidity and/or low temperature conditions will extend the dry time (recommended conditions of 65-80˚F/40-60% relative humidity).
  7. For smoothest results before final coat, see Intercoat Abrasion. At a minimum between
    coats, vacuum and tack thoroughly with a Bona Microfiber Cleaning Pad (dry or slightly dampened with water).


It is not necessary to abrade Bona NaturalSeal unless more than 48 hours has passed since the previous coat was applied. However, for smoothest results, abrade Bona NaturalSeal using 1-2 (stacked) Bona Conditioning Pads and 1-2 Bona Diamond 180 to 240 grit abrasives. Thoroughly clean abraded floor using Bona PowerScrubber OR vacuum and tack with Bona Microfiber Cleaning Pads (dry or slightly dampened with water).

Tip: After abrading Bona NaturalSeal, wet tack the floor to highlight areas where the abrasive may have burned through the sealer. A second application of Bona NaturalSeal may be necessary to cover up burns before application of a Bona waterborne finish.


Application tools should be thoroughly cleaned with water and stored in an airtight container.


Classification Wood Varnishes
Brand Bona
Size 3.79 L (1 gallon)
Sold Since October 18, 2021
SKU WB251618001
UPC 737025012175
Drying Time

Approximately 2-3 hours (high humidity and/or low temperature conditions will extend the drying time).

Maximum Cure : 100% after 1 week.


400-500 square feet per gallon


250 g/L


Non-offending odor


Milky white liquid


Non-flammable – Bona NaturalSeal should be stored in a climate-controlled environment. KEEP FROM FREEZING. Do not store above 38˚ C (100˚ F).

Tools cleaning

Application tools should be cleaned with water and stored in an airtight container.


Stain, sealer, and finish results may vary widely
depending on the wood species, especially on oily and resinous exotic species. Bona NaturalSeal is designed to retain the appearance of an unfinished wood floor. BONA NATURALSEAL CONTAINS WHITE PIGMENT AND IS NOT RECOMMENDED TO BE USED OVER STAIN. ALWAYS PREPARE A SAMPLE OR TEST AREA TO DETERMINE COMPATIBILITY, APPEARANCE AND DESIRED RESULTS.


Bona Floor Coater, Bona Roller, Bona Cut-In Pad.
NOTE: Use a clean applicator for sealer and a separate clean applicator for finish.





Recommended Surfaces

Residential wood floors and Commercial wood floors.

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