Compare the highest-rated insulation professionals in Johnston, South Carolina. All contractors are licensed, insured, and verified through our rigorous screening process.
A locally owned and operated branch of a national brand, Koala Insulation provides comprehensive insulation services with a strong focus on energy efficiency. They are known for their detailed assessments, clear communication, and expertise in both new installations and replacement projects for residential and commercial properties.
A well-established regional contractor known for high-quality workmanship and a wide range of services. They emphasize solving home comfort issues and improving energy efficiency through proper insulation and air sealing techniques. They are often recommended for their professionalism and knowledge of local building codes.
A specialized contractor focusing primarily on spray foam applications but also offering other insulation services. They are praised for their technical expertise, attention to detail, and effectiveness in creating tight building envelopes for both new construction and existing homes in the CSRA (Central Savannah River Area).
The insulation market in and around Johnston, SC, is characterized by a moderate level of competition, primarily from regional and specialized contractors based in neighboring hubs like Aiken, Trenton, and Graniteville. Due to Johnston's size, there are no major national chains physically located within the town, but highly-rated local providers actively service the area. The average quality of service is high, as these established companies compete on reputation, expertise, and customer service. Typical pricing is competitive for the region, with blown-in cellulose or fiberglass being the most cost-effective option, while spray foam commands a premium price due to material costs and specialized application requirements. Homeowners in Johnston often seek these services to improve energy efficiency in older homes and to manage humidity and temperature in crawl spaces, which is a common concern in the South Carolina climate. Many providers are well-versed in local utility rebates and building codes, adding significant value to their services.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Johnston regulations and climate
Get answers to common questions about insulation services in Johnston, South Carolina.
Johnston experiences hot, humid summers and mild but occasionally chilly winters, making moisture control and heat resistance top priorities. We recommend focusing on attic insulation (like blown-in cellulose or spray foam) to block radiant heat gain and using vapor barriers in crawl spaces to prevent mold from our high humidity. Proper insulation helps your HVAC system work efficiently year-round against South Carolina's temperature swings.
Costs vary by home size, material, and area insulated, but local projects for a standard attic often range from $1,500 to $3,500. Regional material availability and South Carolina's sales tax on labor and materials factor into the final price. We always recommend a detailed, in-home assessment for an accurate quote, as older homes in the area may have unique needs that affect cost.
While insulation can be installed year-round, the ideal periods are late fall and early spring. These seasons typically offer milder weather, making it easier for contractors to work in attics and crawl spaces before the intense summer heat arrives. Scheduling during these off-peak times can also lead to better availability from reputable local providers.
Always verify the contractor is licensed and insured to work in South Carolina. Look for local companies with strong reviews and ask for references from projects in Edgefield or Saluda counties. A trustworthy provider will offer a detailed, written estimate, explain compliance with any local building codes, and discuss potential rebates from utilities like SCE&G.
Insulation is a key part of the solution, but air sealing should always be done first. Older homes here often have significant air leaks around windows, doors, and attic penetrations that undermine insulation performance. A professional energy audit can identify these leaks; sealing them before adding new insulation is the most effective way to improve comfort and lower energy bills.