Level 4 and Level 5 are the two finishes most homeowners ever ask about, and choosing the wrong one shows the moment a winter sun rakes across the wall. Here is exactly how they differ and which to spec.
The Six Finish Levels in Plain English
The drywall industry defines six finish levels, 0 through 5. Levels 0 to 2 are for unfinished or hidden areas — garages, behind cabinets, and the first coat under tile. Level 3 is rare in homes. The two that matter for finished living space are Level 4 and Level 5.
Both start the same way: tape and three coats of mud over seams and fasteners. The difference is what happens to the broad paper face of the drywall between the joints.
These levels come from a long-standing industry specification used by drywall manufacturers and finishers across North America, so when a contractor quotes a "Level 4" wall, they are referencing a defined, recognized standard — not a vague description.
What a Level 4 Finish Includes
Level 4 is three coats of compound over the joints, inside corners, and screw heads, sanded smooth — but the wide field of the drywall paper is left bare. It is the standard finish for the vast majority of Kitchener-Waterloo homes.
Level 4 looks excellent under flat, matte, and eggshell paints in normal room lighting. Where it can fall short is under harsh raking light or a high-sheen paint, because the slightly different texture of the bare paper versus the mudded joints can become faintly visible — an effect called "joint banding" or photographing.
Because Level 4 leaves the paper field bare, the quality of the paint and primer matters more. A good high-build primer and a quality flat paint go a long way toward making a Level 4 wall look every bit as smooth as a Level 5 in everyday lighting.
What a Level 5 Finish Includes
Level 5 takes a Level 4 wall and adds a skim coat — a thin layer of compound (or a spray product) over the entire surface, joints and field alike. This evens out the texture so the whole wall reflects light uniformly.
The payoff is a wall that stays flawless under semi-gloss or gloss paint, big windows, and pot lights or sconces that throw light sideways. It is the right call for feature walls, open-concept rooms with lots of glazing, and any space getting a dark or high-sheen colour.
Spray-applied skim products have made Level 5 faster and more consistent than the old hand-troweled method, which is part of why it has become a more common upgrade in higher-end Waterloo Region builds and renovations.
Cost & Time Difference
A Level 5 finish adds material and a full extra labour pass, so expect it to run roughly 20% to 40% more than Level 4 on the drywall-finishing line of a quote. The skim coat also needs its own dry and sand cycle, adding a day or more to the schedule.
For a single accent wall the upcharge is small; across a whole house it adds up, which is why most builders default to Level 4 and reserve Level 5 for the rooms that need it.
When you weigh the upcharge, factor in the cost of fixing flashing after the fact — repainting a whole great-room wall because the joints photographed is far more expensive than specifying Level 5 up front.
How to Choose for Your Project
Ask three questions: How glossy is the paint? How much sideways light hits the wall? How dark is the colour? Two or more "high" answers point to Level 5. Flat paint in an average bedroom with normal light is perfectly served by Level 4.
In Waterloo Region we often spec Level 5 on south- and west-facing great-room walls — the low winter sun is brutal at exposing imperfections — while keeping bedrooms and closets at Level 4 to control cost.
If you are unsure, walk the room at the time of day the light is harshest and hold a phone flashlight flat against a sample wall. If the joints jump out, that wall is a Level 5 candidate.
Get the Right Spec
Mixing levels room by room is smart budgeting, but it has to be decided before the finishers start, since Level 5 changes the sequence. A good contractor walks the space, notes the light and paint plan, and tells you which walls deserve the upgrade.
D&D Interior Services finishes Kitchener, Waterloo, Cambridge and Guelph homes to both standards and will recommend the right level wall by wall. Request a free consultation and we'll spec it with you.
Key Takeaways
- Level 4 muds the joints and fasteners only; Level 5 adds a skim coat over the entire surface.
- Choose Level 5 for high-sheen paint, dark colours, or walls hit by strong raking light.
- Level 5 typically costs 20–40% more than Level 4 and adds a day to the schedule.
- D&D Interior Services serves Kitchener, Waterloo, Cambridge, Guelph and surrounding areas
- Get a free no-obligation quote — call or book online anytime
Sources & References
- Ontario Building Code — Relevant Standards & Guidelines
- D&D Interior Services field experience across Waterloo Region
