
Renovating yellowed or gray white plastic garden furniture
White plastic garden chairs always end up becoming gray and dull. Here is how to whiten them for the summer.
Recommended Materials
- Baking soda
- White vinegar
- Sponge (soft side)
- Clay stone (the best)
- Car wax (tip)
Steps to follow
Step 1
First wash off the bulk of the dirt (earth, dust) with soapy water and a classic sponge.
Step 2
To whiten yellowed or gray plastic: prepare a paste with baking soda and a little water (or white vinegar for more efficiency). Rub the plastic with this paste, insisting on stained areas. Leave on for 15 min in direct sunlight (UV rays activate whitening).
Step 3
The miracle solution: Clay Stone (or White Stone). Pass the wet sponge over the solid stone and rub the furniture. It's magic: it cleans, polishes, whitens and leaves a water-repellent protective film in a single gesture.
Step 4
For stubborn stains embedded in plastic scratches: use hydrogen peroxide (pharmacy) or an oven cleaner (careful, rinse quickly).
Step 5
Rinse thoroughly with a water jet.
Step 6
The pro tip for the finish: once the furniture is dry, apply a coat of car wax (polish) or, more eco-friendly, beaten egg white. Buff with a soft cloth. This creates a shiny barrier that prevents grime from coming back too quickly.
Frequently Asked Questions
The plastic becomes brittle and powdery, why ?
The sun's UV rays have burned the plastic. If it feels floury to the touch, it is at the end of its life and becomes fragile. Store them in the shade or cover them with a tarp when not in use to prolong their life.
Can they be painted ?
Yes, with a special outdoor plastic spray paint. You must clean well, sand lightly with fine sandpaper, and apply the paint in several thin coats.
Precautions
- Do not use a green abrasive sponge (it scratches the plastic and grime will become embedded even faster afterwards).
- Watch out for solvent-based products that melt plastic.



