Spray foam insulation in the Rio Grande Valley
Open and closed cell foam that insulates and seals air leaks in one layer, keeping Valley heat and humidity out of your home.
Insulation and an air seal in one layer
Fiberglass and cellulose slow heat but let air pass through. Spray foam does both jobs. It goes on as a liquid, expands to fill cracks and seams, then hardens in place. It does not sag, settle or blow around in the attic.
In the Valley that air seal matters as much as the insulation. Air coming off the Gulf is heavy with moisture for most of the year. Every leak around a light fixture, plumbing vent or wall top lets that damp air into the house, and the AC has to run longer to pull the water back out. Foam closes those leaks while it insulates.
Our most common foam job is open cell foam under the roof deck. That brings the attic, the air handler and the ducts inside the sealed shell of the house, out of an attic that can run far hotter than the air outside on a summer afternoon. Closed cell foam is the better tool for metal buildings, rim areas and spots that see real moisture. Our crew is bilingual, so hablamos español from the first visit to the final walkthrough.
- Open cell foam for roof decks, walls and quieter rooms
- Closed cell foam for metal buildings, shops and damp spots
- Air sealing at top plates, pipe and wire holes and attic hatches
- Protective coatings where code calls for them, such as ignition barriers
- Free inspection and a written price before any work begins
- Licensed and Insured
Open cell or closed cell?
They share a name but behave differently, especially around moisture. We choose based on where the foam is going and how damp that spot gets.
| Open cell | Closed cell | |
|---|---|---|
| Texture | Light and soft | Dense and firm |
| Insulation per inch | About R-3.5 to R-3.8 | About R-6 to R-7 |
| Water vapor | Passes through | Slows it down |
| Relative price | Lower | Higher |
| Where it fits | Attic roof decks, interior walls, sound control | Metal buildings, shops, rim areas, spots that stay damp |
For the full comparison, read open cell vs closed cell spray foam. If you are weighing foam against a cheaper option, our page on spray foam vs fiberglass lays out the tradeoffs.
Jobs where spray foam earns its keep
Ducts in a hot attic
A foamed roof deck keeps ducts and the air handler out of extreme attic heat and away from the humid air that makes them sweat.
Leaky older homes
Houses with gaps at every top plate and fixture lose cooled air all summer. Foam closes those gaps as it goes on.
Rooms over the garage
Bonus rooms and additions that never cool down often have air moving through the framing. Foam stops it.
Shops and metal buildings
Closed cell foam insulates the metal and helps keep the roof from dripping on humid mornings.
When to skip it: if your attic is dry, your ducts are sealed and you only need more depth, blown in insulation gets you further for the money. We will tell you when that is the case.
What a spray foam job looks like
Look and measure
We check the roof deck, wiring, ducts, attic vents and any signs of roof leaks or moisture.
Estimate in writing
Foam type, thickness and every area covered, listed clearly.
Cover and prep
We protect floors, walls and stored items. Vents are handled the way the design calls for.
Spray and tidy
Foam goes on to the specified depth, gets trimmed where needed, and the area is cleaned.
What spray foam costs
Foam is priced by the board foot, meaning one square foot at one inch thick. Your total comes from the area, how thick the foam goes, whether it is open or closed cell, and how easy the space is to work in. Low, steep or crowded attics take longer, and so does any prep like moving stored items or sealing around old vents.
Every job gets a written price after a free inspection. Our page on what affects insulation cost explains what to compare between quotes, and spray foam cost in the RGV goes deeper on foam specifically.
Spray foam questions
Is spray foam a good idea in a humid climate like ours?
- Yes, when the design fits the space.
- Open cell goes where vapor can pass safely. Closed cell goes where moisture is a constant.
- Any roof leak should be fixed first, since foam can hide a slow leak.
Will my attic vents be closed off?
- With a sealed roof deck design, yes. The attic becomes part of the conditioned space.
- We explain the plan for your house before any work starts.
Do I need to leave the house?
- Plan to stay out of the work area while we spray and for some hours after, per the product instructions.
- We give you the exact timing for your job before we start.
Will it lower my electric bill?
- Sealing leaks and keeping ducts out of attic heat usually cuts how hard the AC works.
- How much depends on the house. Read how spray foam affects Valley electric bills.
How long does it take?
- Most attics take a day. Large homes and metal buildings can take two.
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Prefer to talk? Call us and we will set up your free inspection. Hablamos español.