A patio cover is one of those upgrades that quietly doubles how much you actually use your outdoor space. You stay out longer in the afternoon, you stop worrying about the forecast, and your deck's finish lasts years longer because it isn't getting cooked or rained on. Polycarbonate is, for most homes, the best material for that cover. Here's why — and where it isn't the right answer.
What Is Polycarbonate, Really?
Polycarbonate is a high-impact thermoplastic. It's the same family of material as bullet-resistant glazing and motorcycle helmet visors. For roofing, it comes in three main forms:
Corrugated polycarbonate. Single-layer, wavy profile. Cheapest option, easy to install, lightweight. Good for utility carports and budget patio covers.
Multiwall polycarbonate. Hollow-core panels with internal ribs (twin-wall, triple-wall, 5-wall, even 7-wall). The internal air pockets give it real insulation value — comparable to a single-pane window in twin-wall, double-pane equivalent in 5-wall. This is the dominant choice for residential patio covers.
Solid polycarbonate. Looks like glass, weighs a fraction of it, costs more than multiwall. Used where you want maximum clarity and don't mind paying for it.
Why It's the Default for Patio Covers
Light without sunburn. Quality polycarbonate panels block 99%+ of UV radiation while letting 30–90% of visible light through (you choose the tint). You get a bright, comfortable space without UV damage to your deck, furniture, or skin.
Strong. Polycarbonate is roughly 200 times stronger than glass and 30 times stronger than acrylic. It handles Front Range hail far better than fiberglass or acrylic alternatives. Most quality multiwall panels are warranted against hail damage.
Light. Really light. A typical multiwall panel weighs about 10% of equivalent glass. That means a smaller, cheaper support structure underneath.
Insulating. A 16mm five-wall panel has an R-value around 2.5 — meaningful for keeping a covered patio usable in winter and not unbearable in summer.
Long-lived. Quality panels (Palram, Polygal, SunSky) carry 10–15 year warranties against yellowing and breakage. Real-world lifespan is typically 15–20 years before the UV layer degrades enough to matter.
The Honest Drawbacks
It's noisy in heavy rain. Less so with thicker multiwall, more so with corrugated. If your covered patio is right outside the master bedroom, factor this in.
Cheap panels yellow. Bargain polycarbonate without a co-extruded UV layer can turn yellow and brittle in 5–7 years. Spec a name-brand panel with a written UV warranty, not the no-name product from a big-box store.
Thermal expansion is real. Polycarbonate moves with temperature. Panels need to be installed with oversized fastener holes and the right gaskets to allow that movement, or they'll crack at the screws within a few years.
It's not glass. From below, you can see ribs in multiwall and you can see dirt accumulating in the hollow channels if panels aren't properly sealed at the ends. Done right, this isn't an issue. Done cheaply, it's ugly.
Tint and Light Transmission
This is where most homeowners get the choice wrong. Common options:
| Tint | Light Transmission | Best For |
|---|---|---|
| Clear | 80–90% | Maximum brightness, plant-friendly |
| Opal / Diffused | 30–50% | Even light, no harsh shadows, most popular for patios |
| Bronze | 35–50% | Warm tone, reduces glare, hides dirt |
| Solar Control / IR-Reflective | 50–70% visible, blocks 60–80% IR | Hot-climate patios, south/west exposure |
| Smoke / Gray | 25–40% | Modern look, glare reduction |
For most Colorado patios, opal or solar-control bronze is the sweet spot — bright enough to feel open, cool enough to use in July.
What It Costs
Installed costs in our market, including aluminum or wood support structure and panels:
| Configuration | Installed Cost / sq ft |
|---|---|
| Corrugated polycarbonate carport | $8–$14 |
| Twin-wall (8mm) patio cover | $12–$20 |
| Five-wall (16mm) insulated cover | $18–$28 |
| Solid polycarbonate (glass-look) | $25–$40 |
A typical 12 x 16 ft covered patio (192 sq ft) lands somewhere between $2,300 and $5,500 depending on panel grade and structure complexity.
Polycarbonate vs. The Alternatives
vs. Aluminum solid roof. Aluminum is more durable and quieter in rain, but it blocks all light. If you want a darker, more "indoor room" feel, aluminum wins. If you want a bright outdoor space, polycarbonate wins.
vs. Glass. Glass is clearer and quieter but 5–10x the cost installed, far heavier, and far more vulnerable to hail. In Colorado specifically, glass is rarely the right call.
vs. Fabric / shade sail. Fabric is cheaper and removable, but doesn't shed snow, doesn't block rain, and lasts 5–8 years vs. 15–20.
vs. Wood-and-shingle solid roof. Same trade-off as aluminum, plus more weight, more cost, and you've effectively built a small addition. Sometimes the right call, but it's a bigger project.
When Polycarbonate Is the Right Call
Pick polycarbonate if you want a year-round usable patio that stays bright, you want UV protection for the deck and furniture below, you're in a hail-prone region, or you want the structure to be lightweight enough to attach to an existing wall without major reinforcement.
Pick something else if rain noise will drive you crazy, you want a fully insulated indoor-feeling space, or your HOA prohibits translucent roofing (some do — check first).
The Bottom Line
For a covered deck or patio in Colorado, multiwall polycarbonate from a name-brand manufacturer, with opal or solar-control tint, mounted on an aluminum or properly-sized wood structure, is the right answer for most homes. It's bright, it's tough, it's reasonably priced, and it lasts.
Talk to Haka Decks about a polycarbonate cover for your deck.
