Bona IntenseSeal - Waterborne Wood Floor Sealer by Bona

Professional Use

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

Bona IntenseSeal is a specifically formulated waterborne sanding sealer that develops a vibrant look and deep, natural tone to individual wood species.

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

  • Unique “wet look” appearance adapts to the individual wood species, accentuating the natural pigmentation and color characteristics
  • Excellent sandability – hardens rapidly and allows for easy abrasion
  • Exceptional flow and levelling of finish topcoats
  • Fast drying – 2-3 hours
  • Non-flammable
  • Water clean-up
  • Product can be rolled or pulled with a T-bar
  • Reduces tendency for side bonding. Minimizes tannin bleed
  • Seals the wood, preventing the finish from penetrating

For Professional Use Only

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 IntenseSeal and 2 coats of a Bona waterborne finish. Bona IntenseSeal minimizes sidebonding and grain raise, provides a build layer and prevents the finish from penetrating into the wood surface. Visit for additional product and application information.


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 450-600 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 IntenseSeal unless more than 48 hours has passed since the previous coat was applied. However, for smoothest results, abrade Bona IntenseSeal 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).


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 WB252018001
UPC 737025000738
Drying Time

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

Maximum Cure : 100% after 1 week.


450-600 square feet per gallon


250 g/L


Non-offending odor


Milky white liquid


Non-flammable – Bona IntenseSeal 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. 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, Newly sanded wood floors, and Commercial wood floors.

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