Spray Foam Insulation in Converse - Same-Day Service, Done Right the First Time

Trusted Spray Foam Insulation for Converse Homeowners

If you’re wondering how much Spray Foam Insulation costs, Converse prices typically run $1.80-$3.50 per board foot for open-cell and $3.50-$6.50 per board foot for closed-cell, with most whole-home attic jobs running $3,500-$8,500 depending on square footage and access. We’re available same-day for estimates across Converse, and we seal every attic floor with blower-door-verified air sealing before a single inch of foam goes in. Call (830) 420-0953 for a written price before any work starts.

Call (830) 420-0953

Since 2016, we’ve sealed and insulated more than 9,000 homes under The Haven Standard, and we’ve learned that spray foam without air sealing is just an expensive mistake waiting to happen. In Converse, where summer attic temperatures regularly hit 140°F and winter cold fronts drop overnight lows into the 20s, your building envelope works harder than almost anywhere else in Texas. We’ve measured blower-door readings in Live Oak Ridge and Woodlake homes that were losing 40% of conditioned air through unsealed top plates, can lights, and duct chases before we ever touched insulation. That’s why every spray foam job we do begins with written scope, written price, and documented air-sealing work that we prove with before-and-after numbers. Our crews are background-checked and uniformed, and a live person answers the phone 24/7. No voicemail loops. No callback windows measured in business days.

What Our Spray Foam Insulation Service Includes

Open-Cell Spray Foam

Open-cell spray foam is a half-pound density foam that expands to roughly 100 times its liquid volume, creating a soft, flexible insulation barrier that’s ideal for attic floors and wall cavities in Converse’s climate. You need it when your primary goal is thermal insulation with some air-sealing benefit at a lower cost per board foot than closed-cell alternatives. At Topside Attic Insulation Converse, we specify open-cell for attic applications above conditioned space where the roof deck isn’t being sprayed, and we always pair it with targeted air sealing of top plates, electrical penetrations, and can-light housings - verified with blower-door testing before and after. We’ve found that open-cell in Converse’s humidity requires careful vapor-profile analysis, which we document in your written scope so you know exactly what you’re getting.

Closed-Cell Spray Foam

Closed-cell spray foam is a two-pound density rigid foam that delivers R-6.5 to R-7 per inch while adding structural rigidity and acting as a Class II vapor retarder - the right choice when you need maximum insulation value in minimal space. You need it for rim joists in pier-and-beam homes common in older Converse neighborhoods, for garage ceiling applications where headroom matters, or anywhere moisture management is critical. We source closed-cell products from Owens Corning and Johns Manville, and we never apply it over unsealed substrates - Haven Standard Clause 1 requires written scope and written price before any work starts, and that scope includes exactly how many inches of lift we’re installing and where. In Terrell Hills and Alamo Heights jobs, we’ve documented 35-50% reduction in air leakage after closed-cell rim joist treatment alone.

Rim Joist Spray Foam

Rim joists - the board that caps off your floor joists where they meet the foundation - are the single largest uninsulated surface in most Texas crawl spaces and pier-and-beam homes, and they’re responsible for massive thermal bridging and air infiltration. You need rim joist spray foam when your floors are cold in winter, your crawl space smells musty, or your energy bills spike despite adequate attic insulation. We treat rim joists with closed-cell spray foam in Converse homes because the rigid structure resists the moisture load common in our clay-heavy soils, and we always include a Documented Photo Record of the completed work so you can verify full coverage without crawling underneath yourself. In the Elm Creek and Foster Ridge areas, we’ve found rim joist air leakage accounts for 15-25% of total home air loss before treatment.

Garage Ceiling Spray Foam

Garage ceiling spray foam creates a thermal and air barrier between your conditioned home and the unconditioned garage space below - or, in bonus-room-over-garage configurations, between your living space and the garage below. You need it when rooms above the garage are uncomfortably hot or cold, when garage doors and walls aren’t enough to protect plumbing runs, or when you’re converting garage-adjacent space to conditioned living area. We specify closed-cell for garage ceiling applications in Converse because of the fire-resistance and structural benefits, and we coordinate with your HVAC contractor on any duct penetrations to ensure sealed, insulated boots that don’t become new air leakage paths. Our crews have treated garage ceilings in Spray Foam Insulation in Schertz and Cibolo homes where the temperature differential between garage and living space exceeded 30°F before treatment.

Spray Foam Roof Deck

Spray foam applied directly to the underside of your roof deck - known as a hot roof or unvented attic assembly - moves the thermal boundary from the attic floor to the roof line, converting your attic to conditioned space and eliminating the temperature extremes that damage HVAC equipment and ductwork. You need it when your HVAC unit and ducts are in the attic, when you want usable storage or living space, or when traditional vented attic strategies have failed to solve ice dam or moisture problems. We only specify roof deck spray foam in Converse after blower-door testing and moisture-risk analysis - hot roofs in our climate require careful vapor-profile engineering, and Haven Standard requires we document that analysis in your written scope. We’ve completed roof deck foam jobs in Windcrest and Kirby where attic temperatures dropped from 140°F to 85°F in July, with corresponding 20-30% reductions in cooling load documented through utility bill analysis.

Brands We Service for Spray Foam Insulation

We work with Owens Corning’s Foamular and CertaSpray lines regularly in Converse attics and wall cavities, particularly their high-R closed-cell formulations that perform well in our mixed-humidity climate. Our crews have applied Johns Manville Corbond III in hundreds of local jobs, and we stock their full range of open-cell and closed-cell products so we’re not waiting on material delivery when your job is scheduled. We also specify Knauf insulation products when the project calls for hybrid assemblies - spray foam plus fiberglass or mineral wool - that optimize cost and performance for Converse’s specific building stock.

Whether your home currently has Owens Corning, Johns Manville, Knauf, or any other manufacturer in place, we can assess what’s there, document its condition with photos, and specify the right spray foam solution for your situation. We don’t carry proprietary product lock-ins - The Haven Standard means we specify what performs, not what we’re incented to sell - and we’ll show you the data sheets for any product we recommend before you sign the written scope.

Before

After

Signs You Need Spray Foam Insulation Right Now

• Rooms that won’t hold temperature despite running HVAC constantly. In Converse, where summer design temperatures hit 99°F and winter lows dip to 28°F, uneven temperatures usually mean air leakage through your building envelope is overwhelming your insulation. We’ve measured homes in Universal City with 5,000+ CFM50 of air leakage - the equivalent of a window left open year-round - where spray foam plus air sealing dropped that figure by 60%.
• Energy bills that spike 30% or more in summer and winter peaks. When your kilowatt usage tracks with temperature extremes but your thermostat setting hasn’t changed, your thermal boundary is failing. We see this pattern most often in Converse homes built 2005-2015 with fiberglass batt insulation that has settled, compressed, or been displaced by wind washing in vented attics.
• Hot attic with visible duct sweating or condensation on HVAC equipment. Attic temperatures above 130°F force your air conditioner to work against itself - cooling 55°F supply air while the return duct pulls in 130°F attic air. Spray foam on the roof deck or comprehensive air sealing and attic floor insulation breaks this cycle, and we document the before-and-after temperature differential on every job.
• Cold floors over crawl spaces or garages, especially in morning hours. This is nearly always rim joist air leakage and inadequate subfloor insulation. In Converse’s pier-and-beam neighborhoods and garage-adjacent slab construction, we find unsealed rim joists leaking 20-30% of conditioned air directly to outside. Closed-cell spray foam at the rim joist is the fix we specify and document.
• Musty odors, visible mold, or moisture staining in attic or crawl space. These symptoms indicate warm, humid outside air meeting cooler conditioned surfaces - a condensation problem that fiberglass insulation makes worse by holding moisture. Spray foam’s air-sealing properties stop the moisture transport at its source, and closed-cell’s vapor-retarding characteristics add a second layer of protection in Converse’s humid shoulder seasons.

Our Spray Foam Insulation Process - Step by Step

1. 1
   Initial consultation and blower-door baseline. We arrive on schedule, introduce your named technician, and run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing. This baseline goes in your file and becomes the benchmark we measure improvement against. You’ll get the number in writing before we discuss solutions.
2. 2
   Written scope, written price, written warranty. Haven Standard Clause 1: no work starts without a flat price, detailed scope, and warranty document signed by both parties. We specify exact board-foot quantities, product brands and densities, air-sealing targets, and completion criteria. If you have a competing quote, bring it - we offer a Free Second Opinion on any written estimate and will read it with you line by line.
3. 3
   Air sealing before insulation. We seal top plates, can lights, electrical and plumbing penetrations, duct chases, and any other leakage paths we identified during diagnostics. This step is non-negotiable - we will not blow spray foam over an unsealed attic floor. In Converse homes, this phase typically takes 4-8 hours and reduces blower-door readings 20-40% before insulation is even installed.
4. 4
   Spray foam installation with continuous monitoring. Our technicians apply specified foam thicknesses with real-time monitoring of substrate temperature, ambient humidity, and pass thickness to ensure proper adhesion and cure. We photograph every critical area - before, during, and after - and these images become your Documented Photo Record, delivered with your final paperwork.
5. 5
   Final blower-door test and documentation delivery. We rerun the blower-door test and deliver your complete documentation package: before-and-after CFM50 readings, photo record, material data sheets, warranty registration, and 365-Day Done Right Promise documentation. If the numbers don’t meet the scope, we don’t leave until they do.

How Much Does Spray Foam Insulation Cost in Converse?

Spray Foam Insulation Near Converse - Our Service Area

We maintain crews and equipment positioned for same-day response throughout Converse and the immediate metro corridor, including Spray Foam Insulation in Universal City, Spray Foam Insulation in Live Oak, Windcrest, Schertz, Selma, Cibolo, Kirby, and the full San Antonio metro. Typical drive time to Terrell Hills, Alamo Heights, and Castle Hills is 25-35 minutes; we schedule these areas with route efficiency in mind and always confirm arrival windows by text when your technician is en route. For homeowners in the broader corridor comparing options, our home page lists full service territory and current availability.

Frequently Asked Questions - Spray Foam Insulation in Converse

Schedule Your Spray Foam Insulation Service in Converse Today

Call (830) 420-0953 now for your free, written estimate. We’ll schedule your blower-door baseline, deliver a flat price with detailed scope before any work starts, and back every job with documented performance verification and our 365-Day Done Right Promise. A live person answers 24/7 - no voicemail, no callback queues.

Written by Wes Okafor, Owner at Topside Attic Insulation Converse, serving Converse, Universal City, Live Oak, and the full San Antonio metro since 2016.