If you've ever signed a drywall scope of work and seen the line "Level 4 finish standard," you've probably wondered what the other levels are — and whether you should be paying for one of them. Here's the simple version, from a crew that does this every day in Louisville.
The Gypsum Association defines six levels of drywall finish, numbered 0 through 5. For practically every wall a homeowner ever sees, the only two that matter are Level 4 and Level 5. Everything else is rough work for closets, garages, and walls that are about to get covered up.
What Level 4 actually means
Level 4 is the standard finish for painted residential walls. It's what you're paying for unless somebody told you otherwise. Here's what we do on a Level 4 wall:
- One coat of joint compound over taped seams and inside corners
- Two additional coats over flat seams (three total)
- Two coats over screw and nail heads
- The whole surface sanded smooth, free of tool marks and ridges
On a Level 4 wall, the field of the drywall paper is left bare and the joints are feathered out. Under flat paint and standard interior light, you'll never see a thing. Most kitchens, bedrooms, and hallways live happily on Level 4 forever.
What Level 5 adds
Level 5 is Level 4 plus one more thing: a thin skim coat of joint compound across the entire surface — paper, seams, screws, everything. It's not a thicker finish. It's a more uniform finish.
The point of a skim coat is to make the seams and the field absorb paint identically. On a Level 4 wall, the bare paper takes paint slightly differently than the joint compound on the seams. Under flat paint, you'll never notice. Under satin or eggshell paint, raking morning light, or a sconce that washes a wall sideways, you absolutely will.
When to pay for Level 5
We tell clients to spend the money on Level 5 in three situations:
- Walls that get raked by sunlight — anything with a window throwing horizontal light across a long wall, or a hallway with a window at the end.
- Walls finished in satin, semi-gloss, or specialty paints — the higher the sheen, the more every imperfection telegraphs.
- Open-concept rooms with long sightlines — when you can see 30 feet of one wall in one glance, your eye has time to catch the seams.
For everywhere else — bedrooms, closets, secondary bathrooms, basements with flat paint — Level 4 is doing its job and the money's better spent elsewhere.
Walk the room with a flashlight before drywall starts and after it's finished. Hold a bright LED parallel to the wall — the closer to grazing, the more forgiving the finish needs to be. If you see flicker, you need Level 5.
What it costs
Level 5 generally adds 15–25% to the drywall finish line of a project. On a $4,000 finish job, that's roughly $600–$1,000 extra. On the scale of a remodel, that's not a lot of money. But it's also not free — and you don't need it everywhere.
We typically scope projects with Level 4 standard and Level 5 broken out as an optional upgrade by room. That way you can spend the money where it'll show and save it where it won't.
The short answer
Use Level 4 unless something specific is pushing you toward Level 5. Sun, sheen, or sightlines are the three reasons to upgrade — anywhere those three line up, the skim coat pays for itself the first time the sun comes up.
Got a project where you're trying to figure out the right finish? Send us the details — we'll walk it with a flashlight and tell you straight up where Level 5 is worth it and where it isn't.
Need drywall finishing near you? Mudline provides Level 4 and Level 5 finishes across Louisville, KY, St. Matthews, Jeffersonville, IN, New Albany, IN, and Sellersburg, IN.