How to Fix Cracks, Holes, and Dents in Interior Walls before Painting like a Pro?

Q: Which roller cover is best for smooth walls?

A 3/8-inch nap microfiber roller cover works well for smooth and semi-smooth interior walls. The Bates kit includes microfiber sleeves ideal for this purpose.

A flawless paint job starts long before you open that first can. The secret to a pro‑grade finish lies in surface preparation — fixing every crack, hole, and dent so the new paint has a smooth, even base to bond with. Skipping this step guarantees that every imperfection will be magnified once the paint dries.

Whether you’re refreshing a single room or tackling an entire house, learning how to repair interior walls like a professional will save you time, money, and frustration. In this guide, you’ll master the techniques and discover the essential tools — including the Bates Paint Roller Kit and the Rhibak 27‑Piece Paint Roller Kit — that make the job easier and your results more impressive.

Why Surface Repairs Matter before Painting

Even tiny hairline cracks or minor dents show through after painting. Light hitting a wall at an angle will cast shadows over every bump and groove, ruining the seamless look you’re after. Proper repairs also prevent future issues like peeling, bubbling, or moisture damage.

Taking the time to patch and sand now means your new paint will adhere well, last longer, and look factory‑smooth. Professional painters spend up to 70% of their time on prep — that’s the real key to a “pro” finish.

Tools and Materials You’ll Need

Before you start, gather the right supplies. Having quality tools on hand makes the repair work faster and more precise.

Spackling compound or joint compound – for small to medium holes and cracks
Putty knife (1‑inch and 4‑inch wide)
Sandpaper (120‑grit and 220‑grit) or a sanding sponge
Utility knife – for cutting loose drywall paper
Drywall patch or self‑adhesive mesh tape – for larger holes
Primer – use a stain‑blocking primer for stained or water‑damaged areas
Paint Roller Kit – a complete set like the Bates Paint Roller Kit or the Rhibak Paint Roller Kit ensures even application

Having a reliable roller kit is crucial for the final painting stage. The Bates Paint Roller Kit, 19 pcs (rated 4.6 stars) includes microfiber sleeves, a tray, brushes, and scrapers — everything you need for a consistent coat. For larger projects, the Rhibak 27‑Piece Paint Roller Kit with Extension Pole (4.4 stars, $34.99) gives you an adjustable 2‑to‑4‑foot pole that helps you reach high walls and ceilings without a ladder.

How to Fix Cracks in Interior Walls

Cracks are common, especially in older homes or near windows and doors. They’re easy to fix if you follow the right steps.

Widen the crack slightly using the corner of a putty knife or a utility knife. This creates a V‑shaped groove that helps the filler bond.
Remove loose debris with a dry brush or vacuum.
Apply spackling compound with a putty knife, pressing it firmly into the groove. Overfill slightly to allow for sanding.
Let it dry completely (check the product label — usually 30–60 minutes).
Sand smooth using 120‑grit sandpaper, then finish with 220‑grit for a silky surface.
Wipe away dust with a damp cloth.

For larger cracks (wider than 1/8 inch), apply self‑adhesive mesh tape over the crack before filling with joint compound. This prevents the crack from reappearing.

How to Fix Holes in Drywall

Holes from nails, doorknobs, or accidental bumps are a common eyesore. Here’s how to handle them.

Small Holes (Nail or Screw Size)

Fill directly with spackle using your fingertip or a putty knife.
Let dry, sand, and wipe clean.

Medium Holes (up to 2 inches wide)

Use a self‑adhesive mesh patch or an aluminum patch.
Apply a layer of joint compound over the patch, feathering the edges outward.
Let dry, then sand and repeat if needed for a flush finish.

Large Holes (larger than 2 inches)

Cut a square around the hole using a drywall saw.
Remove damaged drywall and screw a backing board (like a paint stirrer) behind the opening.
Cut a drywall patch to fit, secure it with screws, and tape the seams with mesh tape.
Apply joint compound in three thin coats, sanding between each.

How to Fix Dents and Gouges

Dents from furniture, kids’ toys, or everyday wear are easy to erase.

Sand the dent area lightly to remove any paint ridges or burrs.
Fill with lightweight spackle — it shrinks less and sands easily.
Use a putty knife to force the compound into the dent and scrape off the excess.
Let dry, then sand with 220‑grit paper until the repair is completely smooth.

If the dent is deep, you may need a second coat. Always sand between coats for a seamless blend.

Product Comparison: Which Paint Roller Kit Should You Choose?

Once your walls are smooth, you need a quality roller kit to apply paint flawlessly. Here’s a side‑by‑side look at the two top‑rated kits we recommend.

Feature	Rhibak 27‑Piece Paint Roller Kit	Bates Paint Roller Kit, 19 pcs
Product Image
Number of Pieces	27 pieces	19 pieces
Includes Extension Pole?	Yes, 2–4 ft adjustable pole	No (mini roller frames)
Price	$34.99	$16.85
Rating	⭐ 4.4 out of 5	⭐ 4.6 out of 5
Best For	Large rooms, ceilings, exterior walls	Small‑to‑medium rooms, cabinets, trim
Key Contents	4″ & 9″ rollers, brushes, tray, pole	Microfiber sleeves, frame, tray, angled brush, scrapers
Buy Now	Buy on Amazon	Buy on Amazon

Which One Should You Pick?

Choose the Rhibak kit if you’re painting large areas, high walls, or doing a whole‑house project. The extension pole saves your back and speeds up the job.
Choose the Bates kit if you’re working on a single room, cabinetry, or small projects. It’s budget‑friendly, highly rated, and includes everything you need for precise cutting‑in.

Priming Repaired Walls

After sanding, always prime the repaired spots before painting. Bare spackle or joint compound absorbs paint unevenly, leading to visible “flash” or flat spots. A quality primer seals the repair and ensures uniform color.

For walls that have had moisture or mold issues, use a mold‑proof primer. Zinsser PERMA‑WHITE Mold & Mildew Proof Interior Paint (quart, eggshell white, rated 4.5 stars) is both a primer and a finish paint — perfect for bathrooms, kitchens, or basements. Apply a thin coat over the repaired area, let it dry, and then paint the entire wall.

If you prefer a separate primer, use a drywall primer‑sealer. Apply it with your chosen roller kit for a smooth, even base.

Painting Like a Pro after Repairs

Now that your walls are smooth, clean, and primed, it’s time to paint. Use the same roller kit you used for priming — or switch to the one that best fits your project. Follow these final tips:

Cut in edges first with a 2‑inch angled brush.
Use a 9‑inch roller for large flats and a 4‑inch roller for tight spots.
Load the roller evenly — not too wet, not too dry.
Roll in a “W” pattern, then fill in the gaps without lifting the roller.
Maintain a wet edge to avoid lap marks.

The result is a wall that looks like it was painted by a seasoned professional — because, in a way, you just did their prep work.

Frequently Asked Questions

Can I paint over cracks without fixing them?

Not if you want a professional finish. Paint will not hide cracks — it will actually make them more visible. Always fill and sand cracks first.

How long should I wait for spackle to dry before sanding?

Most lightweight spackles dry in 30–60 minutes. For joint compound, allow 24 hours. Always check the product label for exact drying times.

Do I need to prime after patching?

Yes. Unprimed patches will absorb paint differently, leaving dull spots. Primer seals the repair and gives a uniform sheen.

What’s the best way to avoid sanding dust?

Use a sanding sponge with a vacuum attachment or wear a dust mask. Clean the area with a damp microfiber cloth after sanding.

Which roller cover is best for smooth walls?

A 3/8‑inch nap microfiber roller cover works well for smooth and semi‑smooth interior walls. The Bates kit includes microfiber sleeves ideal for this purpose.