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🧰 How-To Guide

How to Prep Walls Before a Professional Paint Job

Whether you're doing prep work yourself before your painter arrives, or just want to understand what proper prep involves, here's what goes into getting walls ready for paint.

Clean the Surface

Dust, grease (especially in kitchens), and general grime prevent paint from adhering properly. Walls should be wiped down with a mild detergent solution and allowed to dry fully before any painting begins.

Repair Damage

Nail holes, dents, and cracks need to be filled with spackle or joint compound, sanded smooth once dry, and spot-primed. Skipping this step means every imperfection shows through the new paint, especially under certain lighting.

Sand Glossy or Uneven Surfaces

Paint adheres poorly to glossy surfaces. A light scuff-sanding gives new paint something to grip, particularly important when painting over semi-gloss or high-gloss trim and doors.

Protect What You're Not Painting

Floors, furniture, light fixtures, and outlet covers should be covered or removed. Painter's tape along trim, ceiling lines, and baseboards creates clean, crisp edges.

Prime When Necessary

Bare drywall repairs, dramatic color changes (especially dark to light), water stains, and surfaces that have never been painted all benefit from a primer coat before the finish color goes on.

Why Professional Crews Don't Skip This

Surface prep is the least visible part of a paint job and the most important for how long it lasts. A rushed paint job over inadequate prep might look fine on day one but will show every flaw — and fail early — within a year or two.

Ready for a Free Estimate?

Riverflow Brush Painting serves Spokane, Spokane Valley, Liberty Lake, Millwood, Greenacres, and Otis Orchards. Every estimate is free, in-person, and obligation-free.

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Customer Reviews

What Spokane-Area Homeowners Say

★★★★★

“Our 1920s Craftsman needed real attention — peeling trim, faded siding, the works. Riverflow's crew prepped everything properly before a single coat went on. Two years later it still looks freshly done.”

Karen D.
Exterior Painting · South Hill, Spokane
★★★★★

“Painted our whole main floor in three days. Clean lines, no drips, and they moved furniture back exactly where it was. Genuinely impressed with the attention to detail.”

Mike T.
Interior Painting · Spokane Valley
★★★★★

“Our cedar fence was gray and weathered after years of sun. They brought it back to life with a proper stain job. Neighbors have asked who did it.”

Jennifer A.
Fence Staining · Liberty Lake
★★★★★

“We needed our office repainted over a weekend with zero disruption to tenants. Riverflow delivered exactly that — in and out, professional, on schedule.”

David R., Property Manager
Commercial Painting · Downtown Spokane
★★★★★

“Free estimate was thorough — the estimator actually walked the whole exterior and explained what prep work we needed. No surprises once the crew started.”

Tom & Linda S.
Exterior Painting · Greenacres
★★★★★

“Just needed our front door and trim refreshed. They treated a small job with the same care as a full house repaint. Will use them again for the rest of the house.”

Robert M.
Door & Trim Painting · Otis Orchards