
Serving Cedar Lake, IN and surrounding areas
Approved
In business since 2008
Free estimates
Credit card accepted
"Friendly work people. Explained process of insulation. Showed me the results on the I phone."


Serving Cedar Lake, IN and surrounding areas
Approved
In business since 2008
Free estimates
Credit card accepted
"Friendly work people. Explained process of insulation. Showed me the results on the I phone."

Serving Cedar Lake, IN and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
"We recently had blown in insulation installed in our home and couldn’t be happier with the experience from start to finish. The team was kind, professional and incredibly prompt. They showed up on time explained the process clearly and treated our home with respect. What really stood out was the pricing after receiving a much higher quote from another company their estimate was very fair and transparent with no pressure or upselling. It was clear they care about doing honest work at a reasonable price. The installation was completed efficiently, and the whole process was smooth and stress-free. I would definitely recommend them to anyone looking for insulation work great service, great value and great people."

Serving Cedar Lake, IN and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Was very good with visual steps taken with repairs and insulation. Very pleased with job."

Serving Cedar Lake, IN and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!\n

Serving Cedar Lake, IN and surrounding areas
Approved
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"George came out promptly and did a thorough inspection of the crawlspace and provided options on what can be done. The insulation work was performed by Jesus who also found and fixed two foundation cracks. Encapsulation was done by Juan's team and they all did a great job. They were able to perform all the work with a very narrow opening into the crawlspace and were also able to fit in the dehumidifier. After installation there was a minor issue with the dehumidifier and Craig came right away to fix it. Great experience and I'd definitely use their services in the future if need be."





+48

Serving Cedar Lake, IN and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"I felt very comfortable throughout the whole process from the sales to the install of my roof. The project managers, Walter and devan, were very knowledgeable during the install and made sure we didn’t have any questions. Overall very pleased with everything"

Serving Cedar Lake, IN and surrounding areas
Approved
Free estimates
Warranties offered
Small jobs welcome
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.

Serving Cedar Lake, IN and surrounding areas
In business since 1985
Free estimates
Credit card accepted
"Professional and timely inspection. Decided not to purchase recommended insulation service from this vendor because it was not cost-efficient for our house
"
Serving Cedar Lake, IN and surrounding areas
In business since 1999
Free estimates
Credit card accepted
"David and team did a fantastic job. I had 30 year old attic insulated. Old insulation removed and reblown in. David sealed around ceiling lighting, gaps where mice had gained entrance, sealed around windows. They were reliable, efficient, personable, cost effective, and most of all listened to our problems for resolution. We were pleased that we hired DAP and Sons."

Serving Cedar Lake, IN and surrounding areas
In business since 1999
Free estimates
Credit card accepted
"The provider did an excellent job with the spray insulation. They had great professionalism and they were on time. They took great care with objects around them. . The price was very fair for the services provided. I would definitely use this provider again. You won't be disappointed. They did an excellent job.!!!!
"





+16
Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.
R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.
Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.
You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.
Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.
From average costs to expert advice, get all the answers you need to get your job done.

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