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"speedy, professional, and cleanup very well"

"It began with David spending time with us in our home reviewing the strengths and weaknesses of our current setup. And ended with a very thorough crew installation (Antonio and Maurice) at our Western 'burbs home. My wife and I have already recommended to several family members based on our sound experience with the team. If you are looking for professional, I would look no further."

"The job went wonderful! It was completed in a little more than a day and my home was left spotless. They even mopped the floor! They went above and behind on each section of the process. We will be using them again for another room in January. We highly recommend them."

"Tom did a great job with our repair. They listened and didnâ  t try to upset me. I will definitely hire them to do more work next year."

At HeatLock Insulation, we specialize in high-performance insulation solutions designed to make homes and commercial buildings more energy-efficient, comfortable, and protected year-round. Based in Illinois, our team delivers professional insulation services with a focus on quality craftsmanship, reliability, and long-term energy savings.\n\nWe provide expert installation of spray foam insulation, attic insulation, wall insulation, crawl space insulation and air-sealing systems forth residential and commercial properties. Whether it's a new construction project, renovation, or energy-efficient upgrade, HeatLock Insulation helps seal air leaks, regulate indoor temperatures, reduce noise, and lower monthly utility costs.

We bring years of hands-on experience in various trades, ensuring the job is done correctly the first time.

"Chuck was prompt of returning our phone call when we wanted to get an estimate and even responded back the same day with a quote. He knew what he was doing and kept us informed at every single step. The service was impeccable! They made sure to protect our main floor hardwood and to take out all the junk from the crawl space ( stuff smelt of mice pee! Ugh). They cleaned up the crawl space and foam insulated the crawl space. We asked them to foam insulate the rim joists as well since there were critters eating through the normal insulation. Now the smell in the basement ( critter pee smell) is completely Gone and smells like a normal room. Now I don't mind going down to our basement?"

"We have had leaky basement walls in multiple locations for the entire 30 years of living in our home. Our basement was poured with Insulated Concrete Forms (ICF) made of Styrofoam. Apparently, it wasn’t a good choice or wasn’t poured properly."

"Company responded to my voicemail the next day setup
appointment for estimate and completed the job the same day.  Very professional, charged a fair price for
services.  Would definitely use again and
would recommend.


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"Could not have been better. I interviewed 3 companies and got estimates from all. All of them were listed on Angie's List and also through other "handyman" & "home improvement" websites. I chose DAP & Son because the owner, David, did a lot of things right. He listened. He explained things to me. He showed he knows his business. My town requires a building permit for doing insulation. A lot of towns do not. He had no problem with that (another of the local companies I got an estimate did not want to do that). He took care of it. Note: In my town, you have to be registered with the town and show: Surety Bond and Certificate of Insurance. But each time a building trades company registers with the town, it is OK for them to do business for the next 12 months in the town. The surety bond was important to me. A certificate of insurance protects the tradesman's company. A surety bond protects me - the consumer. David and his team of 2 other men got here early (8:15 a.m.) and were done and gone by 12:30 p.m. They put down tarps, they vacuumed as they went - during and after they were drilling into the walls to blow in the new insulation. They called me over several times during the process so they could show me what they were doing and why. When David needed to check an inside wall from the other side, it meant walking into an adjoining room. He asked my permission to do that. Very respectful. I like that, too! They cleaned everything up, were as nice as they could be, and it looks great. Now I just have to wait for the painters that I am contracted with to come and make it all beautiful. I would recommend David Poole of DAP & Son."