How to Choose Interior Paint: Sheen, Coverage & Finish

The color chip on the wall is the easy part. The choice that actually decides whether your room looks flat and hides scuffs, or streaky and shows every roller mark, is the sheen and the quality of the paint itself — and that decision changes room by room.

Sheen is the decision that matters most

Sheen is how much light the dried paint reflects, and it drives two things people care about: how forgiving the finish is of wall flaws, and how easy it is to clean. The rule of thumb is simple — the shinier the paint, the tougher and more scrubbable it is, but the more it shows every dent, roller lap, and bit of drywall texture. Flatter paints hide flaws beautifully but scuff and mark when you touch them.

Most people over-think color and under-think sheen. If you take one thing from this guide, let it be matching the sheen to the room’s traffic and moisture, not just to what looks nice on a chip under store lighting.

Tip: eggshell and satin are the safe middle ground for the majority of a home. If you’re unsure on a wall, go satin — it wipes down far better than flat and hides more than semi-gloss.

Quality paint saves you money, not the other way around

Cheap paint is thin. It has less pigment and lower-quality resins, which means it takes three coats to do what a premium interior paint does in two — so the “bargain” gallon costs you more in product and a whole extra afternoon of work. Better paint also flows and levels better, hiding brush and roller marks, and holds its color and scrub resistance for years.

Brands like Benjamin Moore, Valspar, and Rust-Oleum sell tiered lines for a reason. For a room you’ll live with, buy up a tier from the contractor-grade bottom shelf. The difference in coverage and durability is real, and your neighborhood hardware store can tint any of them to the exact color you want.

How much paint do you actually need?

One gallon covers roughly 350–400 square feet in a single coat. To estimate: add up the length of every wall, multiply by the ceiling height, and subtract about 20 square feet for each door and 15 for each standard window. Then plan on two coats.

• Measure wall length × height for total square footage.
• Subtract windows and doors.
• Divide by 350, then double it for two coats.
• Round up — a little leftover for touch-ups beats a second store trip mid-project.
• Buy all your paint in one batch and, if you can, ask for it to be boxed (mixed together) so the color is dead consistent.

An average 12×12 room with 8-foot ceilings needs about two gallons for walls in two coats, plus a quart or so for trim.

Primer: when you truly need it

Primer isn’t always necessary, but skipping it when you need it is the fastest way to a blotchy, peeling finish. Reach for a dedicated primer when you’re painting bare drywall or wood, covering patched and sanded spots, making a dramatic color change (especially over dark or red walls), or sealing stains and water marks. Products like Kilz are built exactly for stain-blocking and problem surfaces. If you’re going a similar color over clean, previously painted walls in good shape, a quality paint-and-primer-in-one is usually fine.

The tools decide the finish as much as the paint

Even great paint looks bad applied with a shedding brush and a lint-heavy roller. A good angled sash brush cuts clean lines at the ceiling and trim, and the right nap roller lays paint evenly across the wall — use a shorter 3/8-inch nap for smooth walls and a thicker 1/2-inch or 3/4-inch nap for texture. Line it out with quality painter’s tape and protect your floors with drop cloths, and the job goes faster and cleaner every time.

Pick by room

Frequently asked questions

Match the sheen to the room, buy up a tier on quality, and prep before you paint — do those three things and the color takes care of itself. Your local independent hardware store can tint any of these brands to the exact shade you want and steer you right on coverage, and if you get stuck mid-project you can always ask us here.