Compare the highest-rated insulation professionals in Johnston, Iowa. All contractors are licensed, insured, and verified through our rigorous screening process.
A highly-rated, specialized insulation contractor serving the Des Moines metro, including Johnston. They are known for their expertise in both spray foam and blown-in cellulose, and they emphasize energy efficiency and proper air sealing. They often work alongside homeowners to utilize local utility rebates.
This company takes a comprehensive, diagnostic approach to home performance. They start with energy audits to identify the root causes of comfort and efficiency issues before proposing solutions like attic insulation, wall insulation, and extensive air sealing. They are well-versed in the latest building science.
A full-service HVAC and insulation contractor with a strong local reputation. They offer a wide range of insulation services, including removal and replacement, and are skilled at insulating complex areas like basements and crawl spaces. Their dual focus on insulation and HVAC allows them to optimize the entire home comfort system.
** The insulation market in Johnston, Iowa, is competitive and served primarily by established, high-quality contractors from the greater Des Moines metropolitan area. Homeowners in Johnston, which features a mix of newer developments and older homes, have access to several reputable providers. The market quality is generally high, with multiple companies holding relevant certifications (like BPI) and demonstrating strong knowledge of local building codes and MidAmerican Energy rebate programs. Competition is robust, which benefits consumers through competitive pricing and a focus on customer service. Typical pricing varies significantly based on the project; a basic attic blown-in cellulose installation might start in the $1,500 - $3,000 range, while a full home spray foam application or a complex removal-and-replacement project can cost $10,000 or more. Most leading companies offer free, detailed estimates and emphasize comprehensive energy solutions that combine insulation with air sealing for maximum efficiency.
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, Iowa.
For Johnston's climate (Zone 5), the U.S. Department of Energy recommends an attic insulation R-value of R-49 to R-60. This high level is crucial to combat Iowa's extreme temperature swings, from humid, hot summers to bitterly cold winters, ensuring your home stays comfortable year-round and your heating/cooling systems don't overwork. Properly meeting this target can significantly reduce energy bills, which is a major concern for local homeowners facing both winter heating and summer cooling costs.
The ideal times are late spring (May-June) and early fall (September-October). These periods typically offer mild, dry weather in Central Iowa, which is important for projects like attic work where extreme heat can be dangerous for installers and winter conditions can complicate material handling and sealing. Scheduling during these shoulder seasons also helps you prepare your home's envelope before the peak heating and cooling demands arrive.
Yes, Johnston residents should first check for rebates directly from MidAmerican Energy, the primary local utility, which often offers incentives for adding insulation. Additionally, Iowa has a state sales tax exemption for certain energy-saving materials and installations, and you may qualify for federal tax credits for meeting specific R-value requirements. A reputable local insulation contractor will be knowledgeable about current programs to help you maximize your savings.
Look for licensed, insured contractors with strong local references and proven experience with Iowa's climate challenges. They should perform a detailed energy audit or assessment before quoting. It's also wise to choose a provider familiar with Johnston's specific building styles and common issues like managing attic ventilation to prevent winter ice dams, which are a concern in our region due to snow and temperature fluctuations.
Both are critical, but air sealing should almost always come first. In Johnston's windy winters, drafts through gaps, cracks, and penetrations in your attic and walls can undermine even the highest R-value insulation. A comprehensive approach that seals air leaks (especially in the attic floor) before adding new insulation is the most effective strategy for improving comfort and efficiency, addressing a common weakness in older Iowa homes.