KILZ® Wood Cleaner & Brightener

KILZ® Wood Cleaner & Brightener

Where To Buy

KILZ® Wood Cleaner & Brightener is formulated to clean, brighten and condition exterior wood surfaces prior to applying natural finishes, paints or stains. This product will remove exterior stains caused by mold, mildew, algae and fungus as well as household stains such as BBQ sauce, ketchup, wine, etc. Removes mill glaze on new wood. After application of KILZ Wood Stain & Finish Stripper use KILZ Wood Cleaner & Brightener to neutralize the stripper, restore the natural wood color, and condition the surface prior to applying a stain or finish. This product is ideal for use on Exterior Wood and Composites, Decks, Siding, Shakes, Shingles, Fences and Patio Furniture.

Available in Gallons

Please check availability before visiting your local retailer

  • Ratings & Reviews
  • Preparation, Application & Clean-Up
  • Warranty / Warnings
  • Product Specifications


The following steps and products are required.

  • Be sure to have a source for water, hose with nozzle and stiff bristle broom or brush. Wear goggles and acid resistant clothing, boots and gloves. Always use KILZ Wood Cleaner & Brightener after application of KILZ Wood Stain & Finish Stripper.

  • Prevent all rinse solution from entering storm drains.


  • DO NOT MIX IN METAL CONTAINER. Mix only in plastic containers large enough to hold up to 2 gallons of diluted solution. Dilute 1 part of product with 1 part water (1:1 dilution) in a clean plastic container.

  • For removal of rust, tannin bleed, red clay stains and for extremely hard to clean weathered wood surfaces, use product at full strength.

  • NOTICE: Do not mix KILZ Wood Cleaner & Brightener with chlorine bleach or with any other household or industrial cleaning product or detergent.


  • For best results, apply when air and surface temperatures are between 40-90°F.

  • Shake well before use. Conduct a small test patch in an inconspicuous area to ensure product performance.

  • Wet surfaces with water prior to cleaning. Apply solution liberally with a pump sprayer, brush, mop or roller. Keep the surface completely wet with solution for 10-15 minutes.

  • Scrub surface using a stiff bristle broom or brush. The solution will foam. After scrubbing, rinse thoroughly with water at normal pressure, or use a pressure washer at low setting (500-1200 PSI).

  • DO NOT USE HIGH PRESSURE as this may harm the wood. Surfaces other than wood may be dulled if not rinsed off quickly.

  • After surface is dry, lightly sand any loose wood fibers with medium grit sand paper. Sweep away dust before coating.

  • COVERAGE: Full Strength 200 sq. ft. Diluted 400 sq. ft.

WARNING! Sanding or scraping pressure treated lumber may be hazardous; wear appropriate protection.

Clean-Up & Disposal

  • Clean equipment with warm, soapy water. If spilled, contain material and remove with an inert absorbent. Dispose of contaminated absorbent, container and unused product in accordance with all current governmental regulations.

  • Do not dispose of this product down a drain. For recycling or disposal information contact your local household refuse collection service.

Cautions / Limitations

  • Protect from freezing

  • For best results, apply at temperatures between 40°F - 90°F. Temperatures above 90°F may affect the application such as drying too fast. Avoid applying in direct sun. NOTE: If the surface is hot to the touch it should be considered too hot to apply this coating.

  • Avoid heavy traffic for 24 hours.

  • CAUTION: Surfaces may become slippery when wet. Use caution when walking on surface when moisture is present.

  • Allow two weeks before washing or cleaning for full cure.

  • Shelf life under normal conditions is two years unopened.

*Limited Warranty

For one year from the date of purchase, Masterchem Industries LLC warrants to the original residential consumer purchaser (1) that the product meets Masterchem Industries LLC’s manufacturing specifications, and (2) the performance of this product when applied according to the label instructions and specifications. In the event that this product proves to be defective within one year from the date of purchase, Masterchem Industries LLC will, at its option and upon presentation of proof-of-purchase (the original receipt), either furnish an equivalent amount of new product or refund the original purchase price of this product to you. This warranty is not transferable. This warranty excludes (1) labor and costs of labor for the application or removal of any product, and (2) any incidental or consequential damages, whether based on breach of express or implied warranty, negligence, strict liability or any other legal theory. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. To the extent permitted by applicable law, any implied warranties including the implied warranties of merchantability and of fitness for a particular purpose, are limited to the duration of this express warranty.  Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty gives you specific legal rights and you may also have other rights, which vary from state to state. Note to residents of the State of New Jersey: The provisions of this warranty, including its limitations, are intended to apply to the fullest extent permitted by the laws of the State of New Jersey. For warranty service, call: 1-866-774-6371, or email: Masterchem Industries LLC reserves the right to inspect any and all application of the product prior to processing your claim made under this warranty.

General Information



If you scrape sand or remove old paint, you may release lead dust. LEAD IS TOXIC. EXPOSURE TO LEAD DUST CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE, ESPECIALLY IN CHILDREN. PREGNANT WOMEN SHOULD ALSO AVOID EXPOSURE. Wear a NIOSH approved respir tor to control lead exposure. Clean up carefully with a HEPA vacuum and a wet mop. Before you start, find out how to protect yourself and your family by contacting the National Lead Information Hotline at 1-800-424-LEAD or log on to

WARNING: Sanding or scraping pressure treated lumber may be hazardous; wear appropriate protection.

Danger! Corrosive

WILL CAUSE EYE BURNS AND PERMANENT TISSUE DAMAGE. HARMFUL IF SWALLOWED. CONTAINS POTASSIM HYDROXIDE. AVOID CONTACT WITH SKIN. MAY CAUSE PERMANENT SKIN DAMAGE AND SEVERE RESPIRATORY SYSTEM IRRITATION. USE WITH ADEQUATE VENTILATION. Use goggles during application. Wear Acid resistant clothing, boots and gloves. Avoid breathing spray mist. If properly used, a respirator may offer additional protection.

First Aid

  • Eye and skin contact: In case of eye or skin contact, flush immediately with water for 20 minutes.
  • Get medical attention if irritation or symptoms of overexposure persist.
  • If inhaled, move to fresh air.
  • If swallowed, DO NOT induce vomiting.
  • Get medical attention immediately.
  • Give water to dilute material in stomach.
  • Never give anything by mouth to an unconscious person.


  • Base


  • Int/Ext


  • Color


  • Coverage Rate

    One gallon of full strength will cover 200 Sq. Ft. / Gal.

  • Coverage - Low

    200 sq. ft.

  • Mils Wet


  • Mils Dry


  • Coverage High

    400 sq. ft.

  • Mils Wet


  • Mils Dry


  • VOC

    1 g/L

  • Volume Solids


  • Weight Solids


  • Viscosity


  • Flashpoint