Radiant Barrier vs Spray Foam in RGV Attics
Radiant barrier vs spray foam for a Valley attic? Compare how each works, cost, and when to use them. Get a Free Insulation Quote. Call [PHONE].
Rio Grande Valley · Spray foam and attic insulation
Insulation company in McAllen, Harlingen and the Rio Grande Valley
Tell us what you're seeing and we'll get a team over for a free written estimate.
14 citiesAcross Hidalgo, Cameron and Starr counties
FreeAttic inspection and estimate
In writingYour estimate before any work starts
English or SpanishSend your request in either language
Free estimate
Start with a few details about your house
Fill this out in a couple of minutes. A photo of your attic helps a lot, and sometimes a local contractor can price the job from your photo before anyone drives out.
- 1We call you back and connect you with a local contractor to set up your free inspection.
- 2A local contractor picks a time to look at your attic, free of charge.
- 3You get a written estimate to read on your own time. No hard sell.
Services
Insulation services for the Rio Grande Valley
Slab homes in McAllen and Harlingen, older block houses near downtown Brownsville, new subdivisions in Edinburg and Los Fresnos, warehouses along the expressway. Each one needs something a little different, and a local contractor fits the insulation to the building.
Spray foam insulation
Seals air leaks and blocks attic heat
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Attic and radiant barrier
Full attic depth plus reflected roof heat
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Blown in insulation
Best value for adding attic depth
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Batt and wall insulation
Walls, remodels and garage conversions
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Removal and replacement
Clears damaged insulation for a fresh start
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Commercial insulation
Warehouses, metal buildings, offices, retail
Learn more →Spray foam vs fiberglass
Why insulation works harder in the Valley
Spray foam is not always the answer. Plenty of attics only need more blown in depth, and a local contractor will say so. See the full comparison.
01
A cooling season most of the year
From spring into late fall the AC barely rests, so every gap in the attic shows up on the electric bill.
02
Attics that bake
On a summer afternoon a Valley attic can reach 130 to 150 degrees. Thin insulation lets that heat straight into the ceiling.
03
Ducts out of the heat
Most Valley homes run ductwork through the attic. Foam on the roof deck puts the ducts in a space close to room temperature.
04
Gulf humidity
Muggy air leaking in through ceiling gaps makes the AC work twice, once to cool and once to pull the water out.
05
Strong sun on the roof
A radiant barrier under the rafters turns back roof heat before it reaches the attic floor.
06
Settled, matted insulation
Older fiberglass flattens over time and after attic work. A local contractor measures what is really up there before recommending anything.
How it works
Four steps, no guesswork
01
Reach out
Call or use the form, in English or Spanish. Send an attic photo if you can.
02
Free inspection
A local contractor measures what is there and looks for air leaks, damp spots, pests and damaged insulation.
03
Written estimate
The material, the depth and every area covered, spelled out on paper.
04
Install and clean up
A local crew does the work, cleans up and walks you through what was done.
What local contractors insulate
Houses, rentals, shops and businesses
- Slab on grade homes
- Older block and frame houses
- New construction
- Additions and garage conversions
- Rental houses
- Manufactured homes
- Metal shops and warehouses
- Offices and retail
Locations
Where we take requests
We take requests across the Valley along US 83 and I-2 from Rio Grande City to Harlingen, north to Edinburg, and down I-69E to Los Fresnos and Brownsville.
Costs
What does insulation cost?
A local contractor does not quote a number until they have seen the house. Area, material, access and how much old insulation has to come out first all change the price. Blown in fiberglass is usually the least expensive way to add attic depth. Spray foam costs more, and in return it seals air leaks and pulls the ducts out of the heat.
Our cost guide walks through what raises or lowers a Valley job, so you can compare quotes fairly.
FAQ
Common questions
How much attic insulation does a Valley home need?
- ENERGY STAR recommends R-49 for an uninsulated attic in climate zone 2, which covers the Valley.
- If you already have 3 to 4 inches, it recommends adding R-38.
Is spray foam worth it here?
- Often yes for attics with ductwork, leaky older homes and metal buildings.
- If the attic only needs more depth, blown in is usually the better value.
Does a radiant barrier help in the Valley?
- It works best in hot, sunny climates with ducts in the attic, which describes most Valley homes.
- It does not replace insulation. It is usually paired with blown in depth.
Can you remove old or damaged insulation?
- Yes. A local crew vacuums it out, finds out what damaged it, and puts fresh insulation back in.
Which cities do you serve?
- McAllen, Edinburg, Mission, Pharr, San Juan, Alamo, Donna, Weslaco, Mercedes, La Feria, Harlingen, Brownsville, Los Fresnos and Rio Grande City.
Do you speak Spanish?
- Yes. You can send your request in English or Spanish.
Insulation guides
Read up before you decide
Insulation Rebates and Energy Savings in the Rio Grande Valley (2026)
Insulation rebate and energy savings basics for RGV homeowners in 2026. Verify current programs before you buy. Get a Free Insulation Quote. Call [PHONE].
Spray Foam Insulation Cost in the Rio Grande Valley: 2026 Pricing Guide
How much does spray foam insulation cost in the Rio Grande Valley? See 2026 board-foot and whole-home estimates and get a free quote today.