PH:  210.599.8681
Fax: 210.579.7632

South Texas Insulation (STI) is a privately owned business that takes pride in providing personal service. STI is located in San Antonio, Texas and is proud to serve in and around the following communities: San Antonio, Austin, Corpus Christi, Houston, Lotus, Boerne, Bandera, Hondo, Laredo, Rock Port, Kirby and Helotes, Texas.

Mission Statement:

South Texas Insulation is committed to providing honest, energy efficient building consultation through the application of spray foam, excellent customer service and reliable workmanship at a fair price.


South Texas Insulation (STI) use an accredited high pressure spray polyurethane foam applicator through the SPFA Spray Polyurethane spray Foam Association. With over 9 years of experience, STI applicators work together as a team providing the best craftsmanship possible for each job.

STI contractors are adequately knowledgeable, trained, and experienced in installing the product- they are well educated on the tools and material used for each job. As newer and advanced tools and material for spray foam insulation arise, STI is a step ahead educating their team to achieve the best technique and materials available to get the job done right.

Honest Energy Efficient Building Consultation:

South Texas Insulation has the ability to do the job well and do it safely. Even through difficult weather conditions and working from extreme high grounds, STI is proud to meet rigorous standards with great performance and work ethics.  

Checked for Quality:

Each job is supervised to insure South Texas Insulation keeps it’s high standard of quality.

South Texas Insulation stands behind their work!

You can trust

South Texas Insulation

to deliver quality

and value.

Ki Sup Shin

Co owner of South Texas Insulation, San Antonio, Texas

Ernie Slaughter

Co owner of South Texas Insulation, San Antonio, Texas