The Difference Between IR and UV

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When choosing a plexiglass (acrylic) or polycarbonate patio cover for a home in Cuernavaca, it is necessary to understand the difference between Infrared and ultraviolet rays.

UV protection shields you from harmful rays and prevents the material from degrading, while IR (Infrared) reflection blocks radiant heat to keep the space significantly cooler during hot weather.

The Main Differences

UV (Ultraviolet) Protection: Blocks the sun’s invisible, skin-damaging UV rays. It protects people from sunburn and stops patio furniture, fabrics, and wood from fading or turning brittle. Crucially, UV inhibitors also prevent the plexiglass itself from turning yellow and cracking over time.

IR (Infrared) Rejection: Blocks radiant heat, which is the “warm” feeling you get from sunlight. IR-treated or “heat-stop” panels allow bright, natural light to pass through while reflecting heat away, preventing your patio from turning into a greenhouse on sunny days.

Why Both Matter

For Health & Longevity: You need UV protection to prevent your patio cover from degrading and to protect your skin and belongings.

For Comfort: You need IR rejection if you want to actually use your patio during the peak of summer, as it can significantly reduce heat buildup.

Recommendations

Because Cuernavaca has a famously warm, sunny climate, choosing panels that offer both UV and IR protection will strike the best balance between bright, natural light and physical comfort. Many top-tier manufacturers offer co-extruded or tinted “solar control” polycarbonate or acrylic specifically designed to reflect heat.

The core difference is that polycarbonate is virtually unbreakable but scratches easily, while acrylic (plexiglass) offers superior clarity and scratch resistance but can crack under heavy impact.

Comparative Overview

Choosing Acrylic Plexiglass vs Polcarbonate

Choose Acrylic (Plexiglass) If:

You want maximum optical clarity and a sleek, glass-like appearance.
Your patio is surrounded by trees, where branches might rub against it (better scratch resistance).
Long-term aesthetics are your priority, as it maintains its gloss and resists UV yellowing exceptionally well.

Choose Polycarbonate If:

You live in an area prone to severe hail storms or falling debris.
Your patio frame has a curved or arched design, which requires the panels to be bent.
Safety and durability are your main concerns, as it is nearly impossible to shatter.

Considerations of Tint or Product Grade

For intense sunlight in Cuernavaca, the recommended roofing is 6mm to 10mm Bronce (Bronze) or Blanco Opalino (Opal White) multiwall polycarbonate with co-extruded UV protection to reduce heat gain.

Proper installation requires specialized hardware, including Profil H and U seals, to prevent leakage, as specified in local product specifications.

For specific product guidance, consult a local supplier like https://www.mpcsa.mx/index.html, who began operations in Cuernavaca in 1972 selling and manufacturing parts, roofing, domes in acrylic and fiberglass pieces.