Greenhouse Glazing: Why Lexan Polycarbonate Beats Plastic Film

Concerned about toxins from greenhouse plastic leaching into soil via condensation? Use Lexan (twin-wall polycarbonate) instead.

Why Lexan Wins

• No condensation drip: Air gap between walls prevents interior sweating.
• Insulation: Double-wall = R-value ~1.5–2.0; extends season.
• Durability: 12+ years vs. 1–4 for polyethylene film.
• No plasticizers leaching: Rigid, stable polymer.
• Easy install: 4×8 to 4×20 ft sheets; cut with circular saw; screw with rubber-washered fasteners.
• Cost-effective long-term: Higher upfront, but no annual replacement.

Where to Buy

• Home Depot, Lowe's, local plastics suppliers.
• Search "twin-wall polycarbonate" or "Lexan greenhouse panels."

Verdict

If you're building a permanent greenhouse, Lexan eliminates the condensation/toxin concern entirely while delivering better climate control. It's the professional choice for a reason.