Gypsum Board Finish Levels
CSI Division 09, Finishes
A standardized scale, Level 0 through Level 5, defined by the Gypsum Association's GA-214 standard, describing how much taping, compound, and sanding is applied to a drywall installation before it's considered finished, ranging from Level 0, no finishing at all, to Level 5, a full skim coat for the most demanding paint finishes and lighting conditions.
Why it matters
Specifying the wrong finish level for a space's actual use either wastes money finishing a back-of-house storage room to a showroom standard, or leaves a highly visible space with a finish level too rough for the paint sheen and lighting it's actually getting, a mismatch that only becomes obvious once the space is painted and lit.
On a real project
A general contractor specifies Level 1 finish for drywall above a suspended ceiling, where it's never seen, but Level 5 finish for a lobby wall receiving glossy paint under wall-wash lighting that would show every imperfection a lower finish level would leave visible.
Who this matters most to
A Drywall Installer finishes each area to the specified level, since each level requires a genuinely different number of compound coats and amount of sanding, not just more effort applied uniformly everywhere.
Where this goes wrong
A drywall contractor finishes an entire building's walls to a uniform Level 4, the common default, without checking which specific walls the specification called out for Level 5. The lobby's glossy paint under wall-wash lighting reveals visible seams and fastener patterns the Level 4 finish wasn't meant to hide, and the wall has to be re-finished before the owner will accept it.