
Serving Maple Valley, WA and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"I highly recommend this company to do your insulation project."





+22


Serving Maple Valley, WA and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"I highly recommend this company to do your insulation project."





+22

Serving Maple Valley, WA and surrounding areas
Approved
In business since 2009
Free estimates
Warranties offered
"Insulation Co (Jo Estrada) had insulation installers come to our century old house to remove old attic insulation, do a bit of mold remediation, insulate the bathroom fan exhaust, cover the two previously open gable spaces at either end of our roof, then blow in new cellulose insulation. All this took a day, and all was cleaned up like nothing happened. Polite, efficient, professional, and the price was competitive."





+46

Serving Maple Valley, WA and surrounding areas
Approved
In business since 2021
Free estimates
Credit card accepted
"Lake Atitlan Insulation did an excellent job in my attic. They removed the old insulation, installed a solar attic vent, replaced the bathroom vent duct, and added new blown-in fiberglass insulation. They also installed radiant barrier on all the attic roof rafters. The work was completed professionally and thoroughly. I highly recommend them."

Serving Maple Valley, WA and surrounding areas
Approved
Super Service Award Winner
In business since 2025
Free estimates
Warranties offered
"Had great experience with insulation pro. Friendly reliable and-amazing customer service . Highly recommend"





+59

Serving Maple Valley, WA and surrounding areas
Approved
In business since 2009
Free estimates
Warranties offered
"Fantastic. Of all the home improvement companies who have worked on many different jobs at this house in six years, Madrona takes the cake for providing the best quality work and amazing customer service. Madrona was the only company who gave us a thorough plan to not only put insulation in the attic but also to improve ventilation and ensure all roof penetrations were properly sealed. They added 1300 ft of R-44 blown fiberglass insulation over existing rock wool insulation that was fine but inadequate, to bring it to R-49. They fashioned a new wood access panel to the attic with a huge covered batt of fiberglass insulation fastened on the upper side and it feels like opening a secure air lock on the rare occasions where we've looked up into the attic. After they sealed all air penetrations in the attic they were very happy to show us what they did before adding the insulation. They installed insulation shield around the chimney, six roof jacks for proper venting, and vented kitchen and bath fans to dampered roof jacks, insulated with R-11 fiberglass batts. Four years later, the attic looks fantastic - there is no sign of any moisture and the blown in insulation looks as fluffy and lofty as when it was newly installed. I mistakenly thought one of the bath vents had been filled with insulation foam, causing the fan to not work very well, and Madrona sent someone out the next day even though the job was completed four years ago. Curt investigated and then politely and patiently explained that the side vent had been replaced with a better roof vent. And indeed, the fan was blowing air through the roof vent they installed and it is the old fan that is the problem, not Madrona's work. It would be wonderful if all companies stood behind their work this way."



Serving Maple Valley, WA and surrounding areas
Approved
In business since 2003
Free estimates
Warranties offered
"Unbelievable company such great work. John is one of the best business man I have ever dealt with he deserves 20 stars. And his crew does to if you ever need insulation go here. No place else. Best in the state 👍👍👍👍👍"





+21
Serving Maple Valley, WA and surrounding areas
Approved
In business since 2010
Free estimates
Customers say: Quick response
"They did a good job but one of my bathroom fans was noisier after the insulation of my attic. They quickly came out and fixed it. Great Job Madrona!"

Serving Maple Valley, WA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Offers commercial services
"Erick with AG construction came to my rental a week ago. He had the proper equipment to crawl under the house and determine what I needed to fix broken heat pipe, replace vapor barrier and replace insulation from a plumbing leak. I also had signs of rodents. He gave me a bid that was reasonable and was able to have his team on the job within a week. I stopped by as the work was being done and saw old insulation in bags headed for the dump. The area was left clean and his photos of the job look great. This is a very professional company and I would use them again for any crawl space work."





+5

Serving Maple Valley, WA and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"ATI did an amazing job insulating my home. Their team was professional, efficient, and used top-quality materials. I noticed immediate improvements in comfort and energy savings. Highly recommend them for any insulation needs!"


Serving Maple Valley, WA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Credit card accepted
"Acorns Attic was hired for a rodent removal job and I had some insulation replaced since it was dirtied with rodent droppings. Phil and team did a great job. They took plenty of pictures of before and after. I haven’t had rodents since they patched up the openings and the insulation looks great!"
Local and federal rebates are available for insulation installation, which can significantly reduce your overall costs. Many utility companies offer incentives or rebates to homeowners who improve their home's energy efficiency. Contact your local energy provider or government agencies to learn about available programs in your area, and consult with a professional insulation installer to maximize your savings.
It's not necessary to remove old insulation before adding new insulation, as long as the existing insulation is in good condition—dry, free of mold, and not damaged. Adding new insulation on top of old insulation can improve your home's energy efficiency by increasing the overall R-value. However, if the old insulation is wet, moldy, or damaged, it's best to remove it before installing new insulation to prevent potential health risks and ensure optimal performance.
Insulating a house takes between five and twelve hours for batts or boards, and two to five hours for spray foam or blown-in insulation. The exact time depends on the size of your home, the type of insulation, and the accessibility of the areas being insulated. Keep in mind that projects may take longer if old insulation needs removal, if there's a larger square footage, or if spaces are difficult to reach.
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