How we worked it out
Updated as you change the numbers.
- Area = deck + railing length × 6 sq ft per foot (both sides of posts, rails and balusters) + 6 sq ft per 4 ft step.
Method and assumptions
Railings have a lot of surface: about 6 sq ft per running foot is a common estimate for both faces of balusters, rails and posts. Coverage on rough or old wood can be half the label figure.
Questions
How much stain for a 16 × 12 deck with 40 ft of railing?
About 4.5 gallons for two coats at 200 sq ft per gallon.
Sources
Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.