Tools & materials you'll need
Affiliate links- AmazonDrop cloths/plastic sheeting1–2 rolls
- AmazonPainter's tape1 roll
- AmazonTSP (trisodium phosphate) substitute cleaner1 bottle
- AmazonSponge/rags2–3
- AmazonSpackling compound/joint compound1 quart
- AmazonSanding sponge/fine-grit sandpaper (180-220 grit)1-2 sheets or sponges
- AmazonPrimer (appropriate for your walls)1 Gallon
As an Amazon Associate FixlyGuide earns from qualifying purchases — at no extra cost to you. Prices and availability are accurate as of publication and subject to change.
Quick Answer
Achieving a professional-looking interior paint job hinges on meticulous wall preparation. The essential steps include deep cleaning to remove dirt and grease, repairing all nail holes, cracks, and dings with spackle or joint compound, thorough sanding to smooth repairs and dull glossy surfaces, and applying a quality primer to promote adhesion and even color. Overlooking these critical steps often results in a finish that quickly deteriorates, showing defects like peeling, cracking, or inconsistent sheen, ultimately wasting your time and paint.
The Problem
Many DIY painters, eager to get to the
Frequently asked questions
How long should joint compound or spackle dry before sanding?+
Most joint compounds or spackles require at least 24 hours to dry completely, depending on humidity and thickness. Always check the manufacturer's recommendations, but waiting a full day ensures the material is hard enough for proper sanding without crumbling.
Do I really need to wash walls before painting?+
Yes, absolutely. Walls accumulate dust, grime, grease, and other contaminants that are invisible to the naked eye. Painting over these will prevent proper adhesion, leading to peeling or an uneven finish. A simple wash with a degreasing cleaner is essential.
What kind of primer should I use?+
The type of primer depends on your wall's condition and the paint you're using. Use a stain-blocking primer for water stains or crayon marks. For new drywall or patching, a drywall primer/sealer is ideal. If you're switching from a dark color to a light one, a tinted primer can help. Always match your primer to your topcoat (e.g., latex primer for latex paint).
Discussion
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