Spray Foam Insulation in Lubbock, TX

Spray foam insulation in Lubbock has to handle two very different seasons. Wikipedia's 1991-2020 climate table for the city shows July afternoons averaging 93.4F, about 92 days a year at 90F or hotter and 13.3 days at 100F or more, yet January mornings average 27.2F and the record low is -17F. Add an average wind speed of 12.4 mph, which ranks Lubbock among the ten windiest U.S. cities, and every gap in a house's shell gets tested all year. We seal those gaps and insulate the spaces that need it, with open-cell or closed-cell spray foam where it pays and blown-in insulation where that does the job for less.

What the code asks for in Lubbock

OpenEI's climate zone listing places Lubbock County in Climate Zone 3B, a dry zone. The City of Lubbock adopted the 2021 International Energy Conservation Code with local amendments in Ordinance 2024-00031, read a second time in March 2024. The ordinance's insulation table lists R-38 for ceilings, R-13 for wood-frame walls and R-19 for floors, and it calls for at least R-6 on supply and return ducts in attics. For existing homes, ENERGY STAR's retrofit table recommends R-49 for an uninsulated Zone 3 attic, or adding R-38 where 3 to 4 inches already sit on the attic floor. Many towns we serve to the northwest, including Levelland and Littlefield, sit in Hockley and Lamb counties, which OpenEI lists in Zone 4B. ENERGY STAR's numbers rise there to R-60 for a bare attic.

Where South Plains houses lose comfort

In most Lubbock houses the attic is the problem. On a summer afternoon it fills with heat, and the ductwork and air handler often sit right in it. Warm attic air leaks down through recessed lights, the attic hatch, bath fans, plumbing and flue chases and the tops of interior walls, while cool conditioned air leaks up. Thin or packed-down insulation lets the ceiling radiate heat into the rooms below. The result is a hot upstairs, an air conditioner that runs all afternoon and dust that finds its way in on windy days.

Lubbock's housing stock is large and mixed. The 2020 census counted 111,247 housing units in the city, with 9.6% vacant and a homeowner vacancy rate of only 1.5%. The city was incorporated in 1909 and has grown ever since, so its neighborhoods mix older houses with much newer ones. Each age of house leaks in its own spots, so we inspect before we recommend anything.

Closed cell vs open cell foam

Open-cell foam is soft and light. It expands a lot, fills odd-shaped cavities, blocks air and dampens sound, and HomeGuide lists it at R-3.5 to R-3.7 per inch. Closed-cell foam is dense and rigid at R-5 to R-7 per inch. It slows water vapor, resists water and adds some stiffness to what it is sprayed on. In our dry climate, open-cell is a common choice under the roof deck of a house when the ducts are in the attic, and in interior and exterior wall cavities. Closed-cell is the usual pick on metal buildings, where it stops condensation on cold steel, and anywhere we need a lot of R-value in a thin space. We name the foam for each area on the quote.

Metal shops, barns and flat roofs

The Lubbock area is described as the largest contiguous cotton-growing region in the world, and the farm towns around it are full of steel shops, equipment barns and gin buildings. Uninsulated steel bakes in summer and drips condensation when warm, moist air meets cold metal in winter. Closed-cell foam on the panels and purlins insulates and seals in one step. On commercial buildings with low-slope roofs, spray foam roofing adds a seamless layer of insulation on top of the deck, finished with a coating that faces the sun and the hail.

What to ask insulation contractors before you hire

When you talk with spray foam insulation contractors or insulation companies around Lubbock, ask what they will seal before they insulate. Ask which foam they plan for each area, what thickness and R-value the quote lists, and what happens to the old insulation. Ask how they handle the attic ducts and the air handler, how they ventilate during spraying, and how long the household should stay out afterward (HomeGuide's guidance is 24 hours or more). If you searched for spray foam insulation near me and have several bids, line them up by thickness and R-value per area, not just the total.

Spray foam insulation cost

HomeGuide's 2026 guide puts installed spray foam at $1.50 to $5.00 per square foot: $1.50 to $3.50 for open-cell and $3.00 to $5.00 for closed-cell. It lists foaming an attic at $3,000 to $8,000 and a whole house at $8,000 to $20,000, and notes that many installers set a job minimum of $1,000 to $2,000 or more. Blown-in insulation runs $1.00 to $2.80 per square foot in HomeGuide's blown-in guide. These national ranges are a starting point; access, depth, foam type and removal set the real number, and the written estimate we hand you is the price.

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Timing work around Lubbock weather

Wikipedia notes that Lubbock sits on the southwestern edge of Tornado Alley and that spring brings the risk of very large hail. Roof work is best planned around those storms, and attic work is easier in the morning or in the cooler months than on a 100-degree July afternoon. Foam can be sprayed year-round in conditioned spaces. Call early in spring if you want the attic done before summer.

We work in Lubbock and the towns around it: Wolfforth, Shallowater, Idalou, New Deal, Ransom Canyon and Slaton in Lubbock County; Abernathy on the Hale County line; Lorenzo and Ralls in Crosby County; Levelland in Hockley County and Littlefield in Lamb County to the west and northwest; Brownfield in Terry County; Tahoka in Lynn County; and Post below the Caprock in Garza County. The growing suburbs are full of newer houses and new construction, the older railroad and cotton towns have more frame houses and metal farm buildings, and the northwest counties fall in a colder climate zone than Lubbock. Each town page covers what is different there.