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Business Details
14 Years
experience
Your Trusted Insulation Experts in Iowa
Founded over a decade ago by Greg Dietze, C D Insulation has established itself as a trusted provider of high-quality insulation solutions for residential and commercial properties across the Cedar Rapids/Iowa City corridor and beyond. Our commitment to excellence is reflected in our exclusive partnership with Owens Corning, the industry leader in fiberglass insulation, ensuring our clients receive durable, innovative products backed by advanced building science. As an Owens Corning Certified Energy Expert, we combine specialized training in thermal performance, moisture prevention, and air filtration with hands-on experience to deliver energy-efficient installations that enhance comfort and reduce utility costs. Our team includes trained thermographers who conduct comprehensive home energy audits using blower door testing to identify and address energy leakage, creating tailored solutions for consistent indoor temperatures and long-term savings.

Accredited by the Better Business Bureau and affiliated with the Home Builders Association of Iowa, we uphold rigorous standards of workmanship, safety, and customer service. Every project, whether new construction or retrofit, is executed with meticulous attention to detail, leaving job sites clean and ensuring client satisfaction. We offer competitive pricing, responsive service, and a limited lifetime warranty on qualifying products and workmanship, solidifying our reputation as a reliable partner for energy-smart building solutions.
Services
Residential Insulation Commercial Insulation Fiberglass Insulation Blown-in Insulation Batt Insulation Loosefill Insulation Energy Audits Air Sealing Tax Credit Assistance Warranty Services
Details
  • Year established: 2012
Highlights and features
  • We offer over a decade of specialized insulation expertise in residential and commercial projects.
  • Our team is certified by Owens Corning for advanced training in energy-efficient installations.
  • We provide comprehensive home energy audits using blower door testing for precise solutions.
  • Our work includes a limited lifetime warranty on qualifying Owens Corning products and installation.
  • We maintain a Better Business Bureau accreditation, reflecting our commitment to ethical practices.
Associations and certifications
  • Better Business Bureau
  • Owens Corning Certified Energy Expert
Services
Residential Insulation
We install high-performance fiberglass insulation in new and existing homes, using Owens Corning products to improve energy efficiency, reduce noise, and maintain consistent temperatures. Our solutions address attics, walls, and basements, ensuring durability and compliance with R-value standards. Backed by a limited lifetime warranty, our work enhances comfort while lowering utility bills.
Commercial Insulation
Our commercial services cater to large-scale projects with Owens Corning fiberglass insulation, offering cost-effective thermal performance for offices, warehouses, and industrial facilities. We meet tight deadlines with competitive pricing, ensuring energy code compliance and long-term operational savings through expert installation and building science expertise.
Energy Audits
Using blower door testing and thermal imaging, we identify energy leaks and recommend tailored solutions to optimize building efficiency. Our audits assess insulation levels, air sealing needs, and HVAC performance, providing actionable plans to reduce energy waste and improve indoor comfort for residential and commercial clients.
Air Sealing
We seal gaps and cracks in building envelopes to prevent energy loss, drafts, and moisture intrusion. This service complements insulation upgrades, enhancing overall efficiency and indoor air quality. Our methods align with Owens Corning standards to ensure lasting results and improved HVAC system performance.
Tax Credit Assistance
We guide homeowners through federal insulation tax credits, ensuring projects meet eligibility requirements for rebates up to $1,200. Our team provides documentation and expertise to maximize savings while achieving energy efficiency goals through qualified insulation and air sealing upgrades.
People
Greg Dietze
Founder
Greg Dietze founded C D Insulation over a decade ago to provide reliable insulation services using Owens Corning products. He leads a team committed to quality installations, energy efficiency, and customer satisfaction in residential and commercial markets.
Questions
What areas do you service?
We serve Williamsburg, Cedar Rapids, Iowa City, and surrounding Iowa regions for residential and commercial insulation needs.
What insulation types do you offer?
We specialize in Owens Corning fiberglass products, including batt, blown-in, and loosefill insulation for optimal thermal performance.
Are you certified by Owens Corning?
Yes, we are an Owens Corning Certified Energy Expert, trained to deliver high-quality installations with industry-leading warranties.
Do you provide energy audits?
Yes, our trained thermographers conduct energy audits using blower door testing to identify efficiency improvements for homes and businesses.
Can I get tax credits for insulation?
Yes, we help homeowners qualify for federal tax credits up to $1,200 for energy-efficient insulation and air sealing upgrades.
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Reviews (2)
Dave Robertson
Nov 14, 2018 Report
Excellent experience, very quick with service & scheduling. They cleaned up any mess made during installation, and a very personable group.
Malinda Gronewold
Aug 16, 2018 Report
Thanks to C D Isulation! We are happy with the choices we made to use the blow insulation for our new addition. I can feel the difference as it holds the heat really well for the large space we have open versa the insulation we used for our home 10 years ago.
Greatly appreciated Shawn for explaining the options as we are enjoying the comfort of our new addition with the view and incredibly blessed we are.