Poly (HDPE) Swing & Chair Care & Maintenance

Care Guide

Poly lumber (HDPE) is one of the easiest outdoor materials to live with. It won’t rot, crack like wood, or need seasonal sealing — just simple cleaning and a few “what to avoid” notes.

Back to Care Hub

Good to know: Poly is made to handle sun, rain, and everyday use. Most maintenance is just keeping it clean and protecting it from unnecessary heat or abrasion.

Routine Cleaning (the simple method)

  • Rinse with water to remove dust, pollen, and salt residue.
  • Wash with mild dish soap + warm water using a soft cloth or sponge.
  • For textured surfaces, a soft-bristle brush works well.
  • Rinse thoroughly and let air dry.

Removing Common Marks

Most “stains” on poly are surface residue — they come off with the right approach.

  • Pollen / dust film: Soap + water, then rinse.
  • Bird droppings / tree sap: Soak with warm soapy water first, then wipe clean.
  • Grease / sunscreen: Mild degreasing dish soap and a soft cloth.
  • Mildew on nearby cushions (not on poly): Clean cushions separately; poly just needs a standard wash.
Tip: If something doesn’t lift immediately, don’t escalate to harsh chemicals first — try a longer soak with warm soapy water.

What to Do (and What to Avoid)

Do

  • Rinse more often in coastal areas or high pollen seasons.
  • Use a soft cloth, sponge, or soft-bristle brush.
  • Clean spills sooner rather than later.
  • Do seasonal hardware checks (especially near salt air).

Avoid

  • Abrasive pads or powders (they can dull the finish).
  • Harsh solvents/chemical cleaners unless explicitly approved.
  • Pressure washing at close range (can etch the surface).
  • Placing hot items directly on poly (grills, fire pits, hot pans).

Heat & Sun Notes (important)

  • Direct sun: Darker poly colors can feel warmer to the touch in intense sun — this is normal.
  • High heat sources: Keep poly away from direct grill heat, fire pits, patio heaters, or anything that radiates strong heat.
  • Ventilation helps: Good airflow keeps surfaces cooler and reduces pollen buildup.

Scratches & Scuffs

  • Light scuffs are often just surface transfer (from shoes, planters, etc.) and clean off.
  • To prevent cosmetic marks, use felt pads under accessories or planters placed on the swing.
  • If you notice dulling, it’s usually from abrasion — stick to soft cloth cleaning going forward.

Hardware & Hanging Checks

  • Check hang points and hardware after the first week, then every season.
  • If you live near salt air, inspect hardware more frequently for early signs of corrosion.
  • Keep chains/ropes aligned to reduce squeaks and uneven wear.
Questions? If you’re unsure what kind of poly you have, or you’re seeing something that doesn’t clean off easily, send us a photo — we’ll tell you the safest next step.

Contact Support →