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ZAR® Deck & Siding Semi-Transparent Stain

ZAR Deck & Siding Semi-Transparent Stain offers subtle color that highlights the beauty of the wood texture and grain.


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

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Deck and Siding Visualizer

Mix and match deck and siding colors and finishes to find the right look.

Product Overview

An all-in-one stain and sealer, ZAR® Deck & Siding Semi-Transparent Stain delivers rich color with a beautiful, subtle sheen. Our proprietary formulation, which is a blend of oils and finely ground pigments creates depth and clarity of color. It 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.

Coats: 1

Clean up: Mineral Spirits

Coverage: 100 – 400 square feet per gallon

Dry Time: 24 hours, 3 hours recoat

  • Beautiful and durable weather protection
  • Waterproofs and resists fading
  • Application by synthetic bristle brush, roller, or sprayer
  • Ideal for decks, railings, posts, sheds, siding, T-111, and more
  • Fortified with UV inhibitors and mold and mildew resistance
  • One coat application
  • CSI Masterformat® 09 93 13 Exterior Deck, Fence, and Siding Finishes
Click to expand / collapse
  • Wood
  • T‑111
ZAR® Deck & Siding Semi-Transparent Stain
What is ZAR® Deck & Siding Semi-Transparent Stain?
ZAR  Decking & Siding Protecting Your Wood Deck
ZAR® Deck & Siding: Protecting Your Wood Deck

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: 13 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 www​.epa​.gov/lead.

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