How To Paint Interior Walls
How to Paint Walls (Step-by-Step) + Pro Tips for a Smooth Finish
Ready to repaint a room? With the right tools, good prep, and a simple step-by-step approach, you can get a clean, even finish you’ll feel proud of.
If you want help choosing the right roller nap, primer, or paint finish for your space, in.SIDE.out Paint Centers is here to help—DIYers and pros welcome.
Quick Order Help:
Email: [email protected]
Main Line: 770-702-8888
Watch: How to Paint Walls
This video will cover:
proper rolling technique
how to load a roller
how to avoid streaks and lap marks
tips for a smooth, even finish
The Best Way to Paint Walls (What Actually Matters)
There’s no magic “fast and easy” shortcut to a flawless wall finish. The two things that make the biggest difference are:
Prep the surface well
Work in steady, manageable sections
Do those two things and your paint will look smoother, last longer, and cover better.
Step 1: Gather the Right Tools
The right tools make painting easier—and your results noticeably better.
Roller cover (nap) guide:
3/8" nap: best for most smooth to lightly textured walls
1/4" nap: best for very smooth walls and higher-sheen finishes
1/2"–3/4" nap: best for rough or heavily textured walls
What you’ll want on hand:
Roller frame + roller cover
Paint tray + liner
Extension pole (makes rolling easier + more even)
Stepladder
2"–2.5" angled sash brush for cutting in
Drop cloths + painter’s tape (if needed)
Spackle/patch + sanding sponge (for repairs)
Pro tip: If your roller cover is brand new, a quick rinse and dry can reduce lint—especially helpful on smoother walls.
Step 2: Clean + Prep the Walls
Prep is where great paint jobs begin.
Wash most walls with warm water and a soft sponge
Patch holes and dents, then sand smooth
Wipe off dust after sanding
If you see mildew, remove it completely before painting
Prime where needed (repairs, stains, big color changes)
Not sure if you need primer? Call us or bring in a photo—we’ll help you pick the right one.
Step 3: Cut In First (Edges & Corners)
“Cutting in” means painting the edges before rolling.
Use your angled sash brush to paint along:
ceiling lines
corners
trim and molding
around windows and doors
around outlets/switches (turn off power where appropriate)
Step 4: Load Your Roller the Right Way
Pour paint into a lined tray
Roll along the tray ramp to load evenly
Avoid dunking the roller completely (that’s when drips and splatter happen)
The goal: fully loaded, not dripping.
Step 5: Roll Top to Bottom (In Small Sections)
Work in manageable sections so your paint stays blendable.
Start near the top and roll downward
Overlap each pass by about 3–5 inches
Use light pressure—let the roller and paint do the work
Step 6: Reload + Avoid Streaks and Lap Marks
Each time you reload:
start in an unpainted area
then roll back into the previous section to blend
Key technique: keep a wet edge. If a section dries before you blend into it, you’re more likely to see lap marks.
Step 7: Dry, Recoat, and Let It Cure
Most walls look best with two coats for full coverage and richer color.
Check the label for dry times
Let coat 1 dry fully before coat 2
Give the paint time to cure before reinstalling plates or hanging décor
Need Help Choosing Paint or Supplies?
If you’re choosing between finishes (matte/eggshell/satin), durability needs, or the best tools for your wall texture, we’re happy to guide you.
Order & Store Info
Contact / Order Help
Email: [email protected]
Main: 770-702-8888
Roswell Alpharetta Paint Center
Address: 10731 Alpharetta Hwy, Roswell, GA 30075
Direct: 770-613-3330
Main: 770-702-8888
Email: [email protected]
Store Hours:
Monday–Friday: 7:30 AM – 5:30 PM
Saturday–Sunday: 9:00 AM – 2:00 PM
East Cobb Merchant Walk Paint Center
Address: 4235 Merchants Walk Dr Ste 100, Marietta, GA 30068
Direct: 470-308-4620
Main: 770-702-8888
Email: [email protected]
Store Hours:
Monday–Friday: 7:30 AM – 5:30 PM
Saturday–Sunday: 9:00 AM – 2:00 PM
Parkaire Landing Paint Center
Address: 4880 Lower Roswell Rd Ste 135, Marietta, GA 30068
Direct: 678-741-8035
Main: 770-702-8888
Email: [email protected]
Store Hours:
Monday–Friday: 7:30 AM – 5:30 PM
Saturday–Sunday: 9:00 AM – 2:00 PM
Quick FAQs
How do I avoid roller marks?
Use the right nap, don’t press too hard, and keep a wet edge while rolling.
Do I really need primer?
Primer helps on repairs, stains, and big color changes. If you’re unsure, ask us—we’ll point you to the right one.
How much paint do I need?
Coverage depends on surface and product, but we can help you estimate quickly in-store or by phone.
