Corrugated Polypropylene
Twin-wall corrugated PP sheet. Lightweight, waterproof, and economical for yard signs, political signs, packaging, and temporary outdoor displays.
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Overview
Corrugated polypropylene is the standard material for yard signs, political signs, and temporary outdoor displays. The twin-wall construction is waterproof and will not delaminate, warp, or absorb moisture — signs survive outdoor exposure in rain, heat, and humidity without degradation. At approximately 0.5 lb per sheet, panels are easy to handle, transport in bulk, and install with H-wire stakes. Coroplast is the leading brand name; the term is sometimes used generically for any fluted PP sheet.
Key features
- Twin-wall corrugated polypropylene — waterproof and will not delaminate, warp, or absorb moisture
- 4mm standard thickness provides rigid support for yard signs, political signs, and temporary outdoor displays
- Printable with UV, latex, and screen inks on the smooth face after light corona treatment
- Accepts vinyl graphics applied directly — no primer required on the smooth outer face
- Lightweight at approximately 0.5 lb/sheet — easy to handle, transport, and install with H-wire stakes
- 100% recyclable polypropylene — accepted in most industrial and commercial recycling streams