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SANCTUARY by Greenfiber R- 60 Cellulose Blown-In Insulation with Sound Barrier 48.7-sq ft per bag ( 25-lb )

Ratings & Reviews for US Greenfiber SANCTUARY by Greenfiber R- 60 Cellulose Blown-In Insulation with Sound Barrier 48.7-sq ft per bag ( 25-lb )

4.2
363
Review
 4.2 out of 5
363 Reviews


83% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

This blown-in cellulose insulation is generally effective at insulating and reaching difficult areas. Customers report good insulation performance and cost-effectiveness. However, some experienced issues with the rental equipment, such as clogging and limited availability of functioning blowers. A few also noted the dustiness of the material and presence of debris. Overall, most customers were satisfied with the product and would recommend it as a good DIY insulation option that can provide significant energy savings, despite the potential challenges with the installation process.

Customer review summary generated by AI, including incentivized reviews.
363 Customer Reviews

Cost Effective High Quality Cellulose

Would Recommend

Very easy to use with the blower and great quality for the price!

May 14, 2026
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very dusty

Would Recommend

only thing i realy did not like was very dusty when plowing in attic other wise seems to work good

May 13, 2026
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Dust goes everywhere

Easy, good qualtiy

May 10, 2026
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Attic insulation

Would Recommend

Easy to spread in attic

May 10, 2026
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Product must be broken in small sections

Would Recommend

Product is as advertised

May 10, 2026
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Delivery driver was very professional and on time.

May 1, 2026
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Works awesome

Would Recommend

Easy to apply

April 26, 2026
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Quality product

Would Recommend

The product was used for filling some inaccessible locations on an existing structure. It went into the space and filled it nicely.

April 21, 2026
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Response from Greenfiber

Thank you for your review of SANCTUARY. We’re pleased that we were able to meet your insulation needs!

GreenfiberApril 28, 2026

Great for filling in gaps

Would Recommend

The insulation was great for helping me fill in some gaps in my attic. It was useful for small jobs but would take several bags for anything larger. My only drawback is that it comes very tightly packed so it took a while to fluff it by hand if you don’t have a machine for installing the insulation.

April 19, 2026
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Response from Greenfiber

Thank you for your review of SANCTUARY. We’re pleased that we were able to meet your insulation needs! As a note, the SANCTUARY product is packaged f...

GreenfiberApril 20, 2026

Good Insulation. Crappy Lowes.

Would Recommend

How do you offer a free rental machine with purchase of 20 bags and then after purchase mention that you don't actually have any machines to rent? None of the Lowes in the Redlands CA area have it. What are you supposed to do with this product if you can't blow it in?

April 18, 2026
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Response from Greenfiber

Thank you for making us aware of this situation. The Pro desk, tool rental associate, or insulation associate at your local store should be able to p...

GreenfiberApril 20, 2026

Great Material Poor Equipment Management

Price is very good, the material is easy to spray into the attic, and the applicator machine is easy to operate. The material is already making a positive change in my a/c usage as well as heating. The negative part is I bought the material from Lowe's to be delivered a week later. When I made my purchase A Lowe's employee told me I could come by the store after I received my delivery and take an applicator machine for 24 hours at no charge, he also told me there are 2 machines available. When ...

April 16, 2026
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Response from Greenfiber

Thank you for your feedback, but we're sorry to see that your experience was not completely satisfactory. Please give our support team a call at ...

GreenfiberApril 16, 2026

Diy project

Would Recommend

Easy to work with

April 16, 2026
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Response from Greenfiber

Thank you for sharing about your positive experience with SANCTUARY!

GreenfiberApril 16, 2026

Product review

Would Recommend

It was easy to transport and once put into the insulation blower machine it was easy to spray in the areas that needed insulation. What I didn't like was all the dust in creates while the machine breaks up the product but that's pretty hard to avoid so make sure it's done outside.

April 16, 2026
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Even a beginner can use this product!

Would Recommend

The process to blow in was quick and pretty easy. Only down side was the dust associated with the product. If the person loading the machine keeps it consistent, this helps immensely.

April 16, 2026
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Blown insulation

Would Recommend

Very dusty, wear facemask

April 1, 2026
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Great Product, Poor install experience

Would Recommend

seems to be a common issue for lowes or their competitor in that they sell a product they cannot support. ended up blowing in 52 bags but its a pain to find the machine and then get it loaned out. Most staff didnt know what to do in 3 lowes I went to..3rd one atleast took the time to figure it out

March 28, 2026
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Response from Greenfiber

Thank you for making us aware of this situation. We would appreciate you giving our support team a call at 1-800-228-0024 with more information so th...

GreenfiberApril 16, 2026