ZAR® Deck & Siding Semi-Transparent Stain

ZAR® Deck & Siding Semi-Transparent Stain

An all-in-one stain and sealer, ZAR® Deck & Siding Semi-Transparent Stain delivers rich color with a beautiful, subtle sheen. Our proprietary formulation is easy to apply and features excellent adhesion, abrasion resistance, and proven durability. This product rejuvenates and conditions new, old, and pressure-treated unpainted wood surfaces - even premium-grade lumber - such as decks, siding, docks, shakes and shingles, fences, log homes, railings, posts, sheds, and more.

ZAR® Deck & Siding Semi-Transparent Stain Application


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Quick Overview

ZAR® Deck & Siding Semi-Transparent Stain may be used to treat wood that has been previously stained in a similar color with a semi-transparent deck or siding stain.

  • Our unique blend of oils and finely ground translucent pigments penetrate deeply to enhance wood’s natural beauty and texture
  • Provides long-lasting sun protection, repels water, and offers excellent color retention
  • Mold, mildew, and algae resistant on the dry paint film
  • Will not peel or crack
  • Does not exceed maximum VOC 100 g/L

Product Features:

  • 6 Ready-mixed colors
  • Sizes: gallon, 5 gallon
  • Coverage: on smooth surfaces, 300-400 square feet per gallon – on rough surfaces, 100-200 square feet per gallon
  • Application tools: brush, roller, spray, applicator pad
  • Dry time: 24-48 hours, recoat in 3 hours
  • Coats: 1


  • Wood
  • T-111

Ready-Mixed Colors

Available in gallons:

Barnboard Barnboard
Black Walnut Black Walnut
Cedar Cedar
Oak Brown Oak Brown
Rustic Brown Rustic Brown
Sedona Red Sedona Red

Please note, colors are RGB web approximations of the actual shades.


For ZAR® Deck & Siding Semi-Transparent Stain, Water-Based Formula (discontinued)

Acorn Brown Acorn Brown
Barnboard Barnboard
Beechwood Gray Beechwood Gray
Beige Beige
Burley Burley
Burnt Woods Burnt Woods
Cape Cod Gray Cape Cod Gray
Cedarwood Cedarwood
Deep Charcoal Deep Charcoal
Desert Sand Desert Sand
Fawn Fawn
Forest Grove Forest Grove
Georgetown Gray Georgetown Gray
Goldendale Goldendale
Lynchburg Green Lynchburg Green
Mahogany Mahogany
Manor Brown Manor Brown
Natural Honey Natural Honey
Natural Redwood Natural Redwood
Navajo White Navajo White
Parchment Parchment
Pilgrim Blue Pilgrim Blue
Redwood Redwood
Rustic Brown Rustic Brown
Rustic Rustic
Sandpiper Sandpiper
Smoke Smoke
Stonehedge Stonehedge
Westwood Westwood
White White

Please note, colors are RGB web approximations of the actual shades.

How To / Videos

How to Resurface a Deck - 4 Handy Tips using ZAR® Deck & Siding Stain

See more Home Improvement Videos



Supporting documents for discontinued water-based formula


Proof of Performance: ASTM Testing

  1. ASTM D 16 – Standard Terminology for Paint, Related Coatings, Materials and Applications.


Before You Start
Test ZAR® Deck & Siding Semi-Transparent Stain on an inconspicuous area to determine the final color. Also, the wood must have a moisture content of 20% or lower. This is best determined by a moisture meter. If you don’t have a meter and wish to see if wood is ready to stain, sprinkle a few drops of water on it. If the water is easily absorbed, proceed. If not, wait 3-4 months and retest. Do not pre-treat or use a water-repellent preservative. Do not apply over clear finishes.

Overcoating of pre-coated/treated decks could cause stain absorption issues and inconsistent color formation if wood pores are not open, or if previous material contained silicone as a water beading agent.

Wood species, color, and grain patterns influence the appearance of the stain. Test on a small, inconspicuous area prior to full application.

Surface Preparation
The surface must be clean, dry, and in good condition. Remove all mildew, dirt, loose wood fibers, oil, and grease. Repair or replace any loose, cracked, or warped boards.

All mildew (dark, fuzzy, or powdery deposits) must be removed with the following solution: 1/3 cup heavy-duty laundry detergent to 1-quart household bleach to 3 quarts of warm water. Wear protective eye goggles and waterproof gloves when handling cleaning solution. Apply with a scrubbing brush, rinse thoroughly, and allow to dry before staining.

For Grayed Wood Exposed to UV (Sunlight)
Lightly sand or power wash the surface to remove degraded wood fibers. Clean surface according to Surface Preparation instructions. Allow the wood to dry thoroughly after power washing and before application of the stain.


Apply when air and surface temperatures are 40°F (4°C) but not above 90°F (32°C), humidity between 40%-70%. Do not thin. STIR THOROUGHLY before and during use. Do not apply if rain is expected within 24 hours. Spray application is acceptable, but application with a synthetic brush or roller with a small nap cover is recommended. If sprayed, the coating should be dry brushed or back rolled for color uniformity. Always apply in the direction of the wood grain. Apply one coat. The stain needs to penetrate the wood, not build up on the surface. Brush out any puddles before clean up. On vertical surfaces, start at the top on several boards and apply continuously across to a break at a door, window, or corner.

Reapply at 2-4 year intervals for vertical surfaces and 1-3 years on horizontal surfaces. Areas with harsh exposure to the sun, weather, or foot traffic will show wear more quickly than other surfaces.


Dispose of contaminated absorbent, container and unused contents in accordance with local, state and federal regulations.


United Gilsonite Laboratories (“UGL”) warrants the quality of contents of every container. UGL has no control over surface preparation or application techniques. No guarantee as to the results are offered, express or implied. If the product is found to be defective, replacement material may be furnished free of charge; or a refund of the material cost may be issued at the manufacturer’s option. THIS WARRANTY DOES NOT COVER LABOR COSTS, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES. UGL’s responsibility for claims of any kind is strictly limited to the purchase price of the material. This is your sole remedy under this warranty.

USAGE STATEMENT: Prior to use, carefully read the product label and follow the directions. For technical information, warnings, cautions, notices, and additional information, download and read the documentation available on this website.

California Residents: Prop 65 WARNING(S)

* WARNING: 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 respirator 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 visit