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Business Details
19 Years
experience
Trusted Insulation Contractors in San Antonio
South Texas Insulation has been a trusted provider of insulation solutions since 2007. Specializing in fiberglass and spray foam insulation, we serve homeowners, builders, and commercial clients across Texas. As an Owens Corning Certified Energy Expert, we combine industry-leading products with expert installation to deliver energy efficiency, comfort, and durability. Our team of certified professionals prioritizes punctuality, transparency, and quality workmanship, ensuring every project meets rigorous standards. Headquartered in San Antonio, we service communities including Austin, Corpus Christi, Houston, and surrounding areas. With over 15 years of experience, we offer personalized consultations, leveraging building science expertise to address unique project needs.

Our commitment to customer satisfaction is reflected in our track record of positive reviews, competitive pricing, and adherence to Owens Cornings lifetime warranties on products and workmanship. We pride ourselves on delivering cost-effective solutions that reduce energy consumption, lower utility bills, and enhance indoor comfort. Our services include attic insulation, crawl space insulation, commercial projects, and energy audits, supported by state-of-the-art testing equipment. Backed by federal tax credits and local rebates, we help clients maximize savings while improving property value and sustainability.
Services
Fiberglass Insulation Spray Foam Insulation Commercial Insulation Home Insulation Energy Efficiency Consultation
Details
  • Year established: 2007
Highlights and features
  • We have over 15 years of experience in insulation solutions.
  • Our installers are Owens Corning-certified for quality assurance.
  • We offer Owens Cornings exclusive lifetime warranty on workmanship.
  • We help customers access up to $1,200 in tax credits.
  • Our team provides punctual, communicative, and reliable service.
Associations and certifications
  • Owens Corning Certified Energy Expert
What people say
Best customer service Lowered electric bill Prompt and quick job Highly recommend Fair prices
Services
Fiberglass Insulation
Fiberglass insulation provides thermal and acoustic efficiency while resisting moisture and mold. Ideal for attics, walls, and floors, it meets energy codes and reduces HVAC strain. Our Owens Corning-certified team ensures precise installation for long-term comfort and savings.
Spray Foam Insulation
Spray foam insulation seals gaps and insulates hard-to-reach areas, improving air quality and energy efficiency. We use open-cell and closed-cell foams for attics, crawl spaces, and commercial buildings. This solution lowers utility bills and enhances structural integrity.
Commercial Insulation
Commercial insulation services include fiberglass and spray foam solutions for industrial and business properties. We ensure code compliance, reduce energy costs, and improve occupant comfort. Our experienced crews handle projects of all sizes with minimal disruption.
Home Insulation
Home insulation upgrades enhance comfort and energy efficiency. We assess existing insulation, recommend R-values, and install Owens Corning products. Clients benefit from tax credits, reduced noise, and a healthier indoor environment through improved air sealing.
Energy Efficiency Consultation
Energy efficiency consultations identify insulation gaps and air leaks using advanced diagnostics. We provide tailored solutions to optimize thermal performance, qualify for rebates, and lower utility bills. Our building science expertise ensures measurable, lasting results.
People
Ernie Slaughter
Owner
Ernie Slaughter founded South Texas Insulation in 2007. With decades of industry experience, he oversees operations and client relations. Ernie prioritizes customer satisfaction, ensuring projects meet Owens Cornings high standards while delivering energy-efficient solutions.
Questions
What insulation services do you offer?
We provide fiberglass, spray foam, and commercial insulation, along with energy audits and air sealing for residential and business properties.
Are you certified by Owens Corning?
Yes, we are an Owens Corning Certified Energy Expert, offering lifetime warranties on qualifying products and workmanship.
Can insulation lower my energy bills?
Yes, proper insulation reduces HVAC usage, lowering energy bills by up to 50% and improving indoor comfort year-round.
Do you offer tax credits or rebates?
We help clients access federal tax credits covering up to $1,200 for insulation and air sealing projects.
What areas do you service?
We serve San Antonio, Austin, Corpus Christi, Houston, and surrounding Texas communities for residential and commercial projects.
How do I schedule an appointment?
Call 210.599.8681 or contact us online to request a free estimate and schedule your insulation project.