Stain Stop Sealer

300g aerosol

White Knight Prep Rite Stain Stop Sealer is a high opacity sealer and primer with excellent stain suppressing and sealing qualities.

Ideal for effectively sealing common problem stains such as nicotine, smoke, water stains, graffiti, grease marks and tannin bleed.


  • Quick drying - Touch dry in 10 minutes
  • Excellent coverage and sound base coat
  • Covers and blocks stains
  • High opacity
  • Binds and grips the surface
  • Safe to spray - CFC and lead free
  • Suitable for interior and exterior use
  • May be overcoated with oil and water based paints

Safety & First Aid

  • This product is highly flammable. Store and use away from heat and eliminate any source of ignition.
  • If swallowed, seek medical advice immediately and show the container or label. Do not induce vomiting.
  • If in eyes, immediately flush with running water for at least 15 minutes. Seek immediate medical attention.
  • Avoid breathing vapour or mist.
  • Use only with adequate ventilation.
  • If on skin, remove contaminated clothing. Wash skin thoroughly with soap and water. Do not use solvents or thinners.
  • Warning - Misuse by concentrating and inhaling contents can be harmful or fatal.

For 24 hour medical emergency response in Australia call 1800 807 001 and in New Zealand call 0800 154 666


EXTREMELY FLAMMABLE. Keep away from flame and heat and eliminate any source of ignition. Keep in a cool place and out of the sun. Contents under pressure. Do not incinerate or puncture this can, even when empty.


  • Residual paint should be sprayed onto newspaper, allwoed to dry and then disposed of via domestic waste collections.
  • Empty aerosol cans are recyclable via steel can recycling programs.
  • Important: Deliberate misuse of this product to damage public or private property is a crime.


  • Remove as much of the stain as possible by washing with an appropriate cleaner, sanding or scraping.
  • Ensure the surface is thoroughly clean, dry and free from grease, oil, dirt, rust scale and other contaminants.
  • Sand previously painted and glossy surfaces with 600# abrasive paper.
  • Cover all necessary areas to protect from overspray.



  1. Shake can vigorously for 1 minute to ensure colour uniformity. Shake can occasionally during use.
  2. Remove the cap carefully. Avoid using sharp objects that may puncture the can.
  3. Test spray on a small inconspicuous area to ensure surface compatibility and finish suitability.


  1. Select the nozzle setting: The horizontal setting should be used when spraying up and down and the vertical setting should be used when spraying across. To change the nozzle setting, turn the red section on the nozzle.
  2. Hold the can upright approximately 25cm from the surface.
  3. Press button firmly and spray several light coats with a smooth sweeping motion, overlapping each spray pass. To prevent paint from sagging, avoid spraying too close to the surface or applying a heavy coat.
  4. Repeat if necessary.

Do not use when air or surface temperature is below 15°C or above 30°C or in excessive humidity. 



Approximately 1.5m² per can, depending on the nature of the surface and amount of overspray.


Touch dry in 10 minutes. Re-coat after 1 hour. Drying will be slower in cold or humid conditions, in the absence of ventilation or where heavy film builds are applied. Hard dry conditions can be achieved when the coated article is heated.


May be overcoated after 2 hours with a solvent or water based topcoat.

Clean Up

Overspray can be removed while still wet with mineral turps.

To clean the nozzle after use and prevent blocking turn the can upside down and press button until only gas escapes.

Stain Stop Sealer
Safe to Spray
Hints and Tips
  • Paint will not adhere to glossy or dirty surfaces.
  • It is better to spray a few light coats than one heavy coat.
  • Practice makes perfect. Do a test piece first on cardboard to get the feeling.
  • Use masking tape or newspaper to prevent paint from going on areas you don't want it to.
  • Have lots of rags handy for any cleaning