Shade is not just shade
Not all covers cool the same. A lattice pergola, a metal roof, and an insulated roof each change the patio temperature differently. Here is what to expect.
What the sun does to a bare patio
A concrete patio in direct July sun can top 120 degrees. The air above it shimmers. You cannot stand on it barefoot. Nobody uses it from 11 to 4.
The heat also soaks into the house wall. Rooms off the patio run hotter. The AC works harder all afternoon.
Lattice: some relief
An open pergola blocks roughly half the direct sun, depending on beam spacing. The patio feels better but still warm. Breeze helps a lot under lattice.
Think of lattice as filtered sun. Good for morning coffee and plants that like light. Not enough for a July afternoon cookout.
Solid metal roof: real shade
A solid roof blocks all direct sun. The slab stays near air temperature instead of baking. The difference is dramatic — step from sun to cover and you feel it instantly.
But plain metal radiates heat down. The underside gets hot and warms the air below. It is still far better than no roof, just not the coolest option.
Insulated roof: the coolest
Foam-core panels block heat from passing through. The underside stays close to air temperature. On a 95-degree day, the patio under an insulated roof feels like the mid-80s in the shade.
Add a ceiling fan and it feels better still. Moving air over skin cools you several degrees. The combo is the closest thing to AC outdoors.
The house benefits too
A shaded back wall means less heat enters the home. Owners often notice the rooms off the patio feel cooler. The AC cycles less on summer afternoons.
Pick by how you use the patio
Morning-only use? Lattice may be enough. All-day living? Go solid. West-facing and brutal? Insulated is worth it. Match the roof to your real life.
Call (301) 679-9193 or send the form for a free on-site estimate.