Spray Foam Insulation in Arlington, TX

Spray foam insulation in Arlington is mostly about keeping summer heat out of the house and keeping cooled air in. Wikipedia lists the city's record high at 113F, set in 1936, and the National Weather Service office in Fort Worth puts the average first 100-degree day at Dallas/Fort Worth on July 1 and the average last one on August 27, with a record 71 such days in 2011. A house that leaks air through its attic or bakes under a thin layer of insulation pays for it every afternoon. We seal those leaks and insulate attics, walls, garages and metal buildings with open-cell or closed-cell spray foam, or with blown-in insulation where that is the better value.

What the code asks for in Arlington

Tarrant County falls in IECC climate zone 3A, and Texas adopted the energy chapter of the 2015 International Residential Code as its statewide standard for single-family homes, effective September 1, 2016, according to the State Energy Conservation Office. The Insulation Institute's summary of that code lists R-38 for ceilings in zone 3 and R-20, or R-13 cavity plus R-5 continuous, for wood-frame walls. For existing homes, ENERGY STAR recommends more: R-49 in a zone 3 attic with no insulation, and R-38 added where 3 to 4 inches already sit on the attic floor. Cities can adopt newer codes than the state minimum, so we check what your city enforces when a permit is involved.

Where Arlington houses lose their cool

Arlington grew from 7,692 residents in 1950 to 90,229 in 1970 and 261,721 in 1990, and the 2020 census counted 151,697 housing units. That means a wide range of houses: post-war ranches with shallow attics, 1970s and 1980s brick homes whose blown-in insulation has settled, and newer two-story homes with bonus rooms over the garage. The leaks show up in the same places. Air escapes around recessed lights, bath fans, plumbing stacks, the attic hatch and the top plates of interior walls. Kneewalls and sloped ceilings in second-floor rooms are often thinly covered. Rooms over a garage lose cooled air through the floor. Where ducts and the air handler sit in the attic, they work inside the hottest space on the property.

Closed cell vs open cell for a hot climate

Open-cell foam is soft and light, rated around R-3.5 to R-3.7 per inch in HomeGuide's guide. It expands to fill odd cavities and stops air movement, and it is the usual choice when an attic is turned into a sealed, semi-conditioned space by spraying the underside of the roof deck. Closed-cell foam is dense and rigid, around R-5 to R-7 per inch (HomeGuide), and it resists water. It suits metal buildings, rim areas, exterior walls that need the most R-value per inch and spray foam roofing. Neither is right for every surface. On a wide attic floor with good access, sealing the leaks and blowing cellulose or fiberglass to depth often costs less and works well. We explain the options and price them side by side when more than one fits.

Shops, metal buildings and flat roofs

Southern Tarrant County has plenty of detached shops, steel buildings and commercial roofs. Uninsulated steel turns into an oven in July and can drip condensation when humid air meets a cooled panel. Closed-cell foam on the panels insulates and seals in one pass. On low-slope roofs, spray foam roofing adds insulation on top of the deck and is finished with a protective coating; HomeAdvisor notes a topcoat refresh every 10 to 15 years. The City of Arlington lists re-roofing among the jobs that need a permit, so roof work is planned with that in mind.

Questions to ask insulation contractors

When you compare spray foam insulation contractors or insulation companies in Arlington, ask what gets sealed before anything is insulated, which foam goes where and why, the thickness and R-value written on the quote, how the attic will be ventilated or sealed, and how long you need to be out after spraying. HomeGuide advises staying out for at least 24 hours. Ask how old insulation that is wet, soiled or crushed will be handled. If an answer is vague, ask again. Our quotes put those answers in writing.

Spray foam insulation cost

HomeGuide's 2026 guide puts installed spray foam at $1.50 to $5.00 per square foot: open-cell at $1.50 to $3.50 and closed-cell at $3.00 to $5.00. Fixr lists $3.15 to $7.50 per square foot for existing walls and $2.75 to $6.50 in new construction. A full house runs $8,000 to $20,000 by HomeGuide's figures, and small jobs often run into a minimum of $1,000 to $2,000 or more. Thickness, foam type, access and prep set the final number. We visit, measure and give you a written estimate, and that estimate is the price.

Utility programs

If Oncor delivers your electricity, its Home Energy Efficiency Program pays incentives to approved service providers for attic, wall and floor insulation and weather-stripping. Its page says 2026 funding has been fully used and to check back in January 2027. Ask about it before you schedule, since program rules and funding change each year.

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We work in Arlington and the cities that ring it: Pantego and Dalworthington Gardens in the middle of town, Grand Prairie and Irving to the east, Mansfield, Kennedale and Burleson to the south, Euless, Bedford, Hurst and Grapevine to the north, Cedar Hill and Duncanville toward Joe Pool Lake, and Fort Worth and Forest Hill to the west. The houses range from post-war ranches to new subdivisions, and several cities require contractors to register before working, so each town page covers what matters there.