SUPERDECK® by Sherwin Williams is a professional grade exterior wood deck finish that was developed to provide superb weather protection and color enhancement. Superdeck semi-transparent deck stain utilizes iron oxide pigments to protect against harmful UV rays. Superdeck is a blend of tung and linseed oils to help inhibit the growth of mold and mildew.
A high-solid wood finish developed to give superior protection and beautiful color to exterior wood. Superdeck® Semi-Transparent Stain uses the highest quality ingredients to provide superior protection. This unique formula contains carnauba wax for an extremely durable finish and a beautiful lustrous sheen with mar and scuff resistance. Superdeck® Semi-Transparent Stain will not track and is resistant to foot traffic patterning. Superdeck® Semi-Transparent Stain is expertly formulated for any exterior surface including decks, fences, siding, and furniture. Available in a spectacular 63-color palette to capture the beauty you seek.
SUPERDECK® Semi-Transparent Stain Scores (1-10)
Appearance After Initial Stain Application: 7
–Our test deck was a cedar deck. We chose to use the Superdeck cedar color. Unfortunately, after drying the finish was a tacky uneven finish that did not dissipate for several days. A single coat of stain was applied.
Preventing UV Graying at 2 Year Mark: 8
–Superdeck deck stain did score well in this category. Nearly 80% of the original color was still intact in full sun exposure at the 2-year mark.
Wear/Tear and Peeling: 8
–Superdeck stain showed no signs of peeling although there were some signs of wear in the high traffic areas. Our new porch is also the entrance to the home so traffic is heavy. Superdeck was substantially worn off at the entrance.
Cost Per Square Foot: 7
–Superdeck can be purchased for around $40 per gallon on average. Our 500 square foot redwood porch burned up 4 gallons of stain including the deck floor and railings.
Preventing Mold/Mildew/Algae: 7
–After weathering for 2 years, Superdeck deck stain revealed a noticeable quantity of mildew present in the finish. Superdeck contains mildewcides it does contain linseed oil, which is known to attract mildew. We concluded that Superdeck was ineffective at inhibiting fungal growth and were forced to score it low in this category.
Ease of Application: 7
–We used a stain brush to apply Superdeck semi-transparent stain to the entire redwood porch. Penetration issues were a problem causing an uneven finish. It took two people staining for 8 hours to complete the job.
Color Shifting (darkening) after 2 Years: 5
–We were disheartened with Superdeck having a darkened appearance at the 2-year mark. It was almost as if dirt was attracted to the finish. A nearby tree may have added to the problem.
Difficulty of Reapplication: 6
–Reapplication of Superdeck on our test deck will be more difficult than we had hoped. Due to the darkened appearance and mildew infiltration, the stain will have to be stripped off prior to a stain recoat.
Overall Score SUPERDECK® Semi-Transparent Stain at 2 Year Period: 6.875
–We were not overly excited with the results of Superdeck Sherwin Williams stain. We were mostly let down with the application appearance as well as the appearance after 2 years. A high scoring wood stain will not darken after 2 years of weather exposure. Besides being extremely unsightly it makes for a more difficult recoat.
Where To Buy: Sherwin Williams, Lumber Yards and Paint Stores
Cost: $39.99 per Gallon, $189.99 per 5 Gallon Pail
Stain Type: Semi-Transparent oil based
Available Colors: Cedar, Redwood, Weathered Gray – Tintable to 60+ Colors
Application Temperature: 40-95 F
Coats Required: 1 Coat
Coverage Per Gallon: 250-350 sq. ft. Actual coverage was 175 sq. feet as tested
Application Tools: Sprayer, Pad, Brush, Roller
Dry Time: 8-24 Hours
Cleanup: Mineral Spirits
VOC Compliant: 250 Compliant in All 50 States. 100 VOC for LA Area
Manufacturer: Sherwin Willaims
Test Deck Stats:
Deck Wood Type: Cedar Deck
Deck Square Footage: 500
UV Exposure: Full Sun
How Many Years Tested: 2 Years
Stain Color Used: Cedar
*All products tested and results are from our experience. We offer no guarantee of similar results. Take inconsideration that results may differ due to different wood types, exposure to UV radiation, and natural weathering.