Metal Roofing in Laredo, TX

Heat is the main event

Texas A&M International University notes that Laredo often logs more than 50 days a year above 100 degrees. All of that heat lands on the roof first. A dark shingle roof can get far hotter than the air around it, and the heat soaks through the deck into the attic, where the ductwork and air handler often sit. Metal changes the math. A reflective finish bounces a big share of the sunlight back, and a painted panel lets go of the heat it does absorb quickly once the sun drops, instead of holding it into the night the way asphalt does. In Webb County, that's the main reason to buy a metal roof; the storm benefits are a bonus.

Choosing a color and finish

• White, light gray, tan or sand reflect the most. Many manufacturers list a solar reflectance value for each color, and higher is better here.
• Cool-pigment darker colors reflect more than standard paint of the same shade, if you'd rather have bronze or terracotta.
• PVDF finishes hold color and resist chalking under intense UV better than polyester paints.
• Bare Galvalume reflects well when new, but it doesn't release heat as readily as a painted surface, and it dulls over time.

Ask to see the reflectance numbers for the colors you're choosing between. Two colors that look nearly the same on a sample chip can behave very differently on a roof in August.

Underneath the color, use a synthetic underlayment rated for high temperatures. Standard felt was made for shingle roofs and can soften or break down under a metal panel that sits in full sun all afternoon. On a re-roof, we'd also tear off the old shingles rather than cover them. In this heat, an old layer trapped under new metal adds nothing useful, and the tear-off lets the crew replace any deck that's dried out, split or gone soft around old leaks.

The attic does half the work

A cooler roof deck helps only if the attic underneath is set up right. Here's the order we'd tackle it in Laredo:

1. Seal and repair the ductwork in the attic. Leaky ducts pulling in 140 degree attic air waste a lot of cooling.
2. Add a radiant barrier if the ducts stay up there.
3. Bring insulation up to about R-30 to R-60.
4. Balance soffit intake with ridge exhaust so hot air keeps moving out.

Our explainer on how radiant barriers work covers those foil sheets in more detail. If the house still can't keep up after all that, the system may be worn out or undersized; for repair, Cooler Air Today in Laredo is one call to make.

Storms still happen

Laredo isn't hail country like the Panhandle, but thunderstorms with small hail and gusty wind do roll through. A Class 4 impact rating is worth asking for on a roof meant to last decades, and standing seam with hidden fasteners keeps wind-driven rain from getting in at the screws. If you have a shop, carport or patio cover, an exposed-fastener panel is fine there; just check the screws now and then, because constant UV hardens and cracks the rubber washers under them.