How to Wash Your Painted Walls With Simple Green

Washing painted walls periodically keeps them looking fresh and can extend how long a paint job looks good between full repaints — a diluted all-purpose cleaner is generally effective for this, as long as it's used at an appropriate dilution and tested on the specific paint finish first.

1. Test in an inconspicuous area first

Before washing a whole wall, testing the cleaner on a small, hidden area (behind furniture, inside a closet) confirms it doesn't affect the specific paint's sheen or color — this is particularly important for a higher-gloss finish, which can sometimes show subtle dulling from certain cleaning products.

2. Dilute according to the product's instructions

Using an all-purpose cleaner at full strength on painted walls is generally unnecessary and increases the risk of affecting the paint finish — diluting per the product's guidance for general household surface cleaning gives effective cleaning power without excessive concentration.

3. Use a soft cloth or sponge, not an abrasive scrubber

A soft cloth or sponge cleans effectively without risking scratches or texture damage to the paint film — an abrasive scrubbing pad, even with a gentle cleaner, can dull or scratch paint, particularly on lower sheens like flat or matte.

4. Work from the bottom up to avoid streaking

Cleaning from the bottom of the wall upward, rather than top-down, helps prevent dirty runoff water from streaking through already-cleaned areas below, following a technique long used for washing large vertical surfaces generally.

5. Rinse with clean water after cleaning

Following the cleaning pass with a rinse using a clean, water-dampened cloth removes any remaining cleaner residue, which could otherwise leave a slight film or affect the wall's appearance once dry.

6. Be more cautious with flat and matte finishes

Lower-sheen paints (flat, matte) are generally more susceptible to visible marking or subtle sheen changes from cleaning than higher-sheen finishes like satin or semi-gloss — using a gentler touch and being more conservative with cleaning frequency on these lower sheens helps preserve their appearance.

7. When a wall needs more than routine washing

For genuinely stubborn stains, scuffs, or grease buildup that routine washing doesn't resolve, a more targeted approach (following the specific stain-removal guidance covered for that particular substance elsewhere on this site) is more effective than repeatedly washing with an all-purpose cleaner alone.