"Excellent job to spray insulate the existing attic. We have noticed a difference already."

"I was very pleased with the blown fiberglass insulation they installed in my attic. It's a nice, clean job with quality insulation. I had 5 quotes from companies and this was by far the best value for the job."

Koala Insulation of Grand Rapids is the area's certified insulation expert providing high-quality insulation services to homeowners, contractors and property owners. We work with new construction, retrofit applications, and properties affected by natural disasters or that have suffered significant damage. We provide all types of insulation including blown-in cellulose and fiberglass, spray foam, and batt-insulation. Furthermore, we provide a number of energy efficiency upgrades such as air sealing, thermal imaging, hatch, can light covers and solar attic fans. If it involves insulating or improving energy efficiency within a building envelope, we can handle it. We offer competitive prices and free insulation evaluations. We are locally owned and operated, fully insured and licensed, and our services come with a limited lifetime warranty.

"They were great to work with."

"Great work, very personable, professional, courteous, and reasonably priced. Received blow in insulation for garage and entire attic in house… they hammered it out, did a quality job, and work very hard."

"We are extremely with the workmanship Infinity Home Improvement showed. Excellent response time. Spectacular customer service. We highly recommend"

"Friendly and professional company. Explained alot about what they were doing, cause I really didn't know anything about insulation and ventilation."

"Bill from WBI was the first to contact us and the first to give us a quote on the insulating of the attic and crawl spaces of our old farmhouse. The price was very fair for the professional quality of work we received. Bill is a very honest, competent, hard-working professional. He got the job done very quickly, and we are beyond pleased with the work he did for us. We can't say enough good things about WBI, and we highly recommend them!"

"I had them put in additional insulation & spray foam insulation. They were on time 9:00am and completed everything by 12:00 They also cleaned up the garage taking care of the insulation. They were great to work with as they knew what they were doing, I'm happy with the results!! Very professional and great to work with!!"

"We received a quote on insulation and he gave excellent advice regarding what type of insulation we actually needed. He gave advice on some things that he found that were done incorrectly in our attic. He said our house would stay cooler longer during the day and he was exactly right about that. We would highly recommend WBI to everyone!"