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Dense-Pack Cellulose

July 12, 2022

Dense-Pack cellulose insulation blog title photo

Eco-friendly dense pack cellulose insulates brilliantly and lowers your carbon footprint

Looking to make your build more sustainable? Then you're going to want to know more about dense-pack cellulose, an eco-friendly insulation material that's quickly becoming the darling of the sustainable building world. It's increasingly being used for building certifications like NetZero and Passive House because it ticks two very important boxes for green materials:

  1. It's an excellent insulating material, almost as effective as spray foam. It cuts down on energy use and ensures buildings operate at maximum efficiency.
  2. It’s a carbon-negative material: dense-pack cellulose is made of 85% recycled newspaper. So not only does it give an existing material a second life, it started out as a tree that made oxygen and removed carbon from the atmosphere. So even with the processing that's required to create newspapers and convert them into insulation, the end material is still either carbon negative or carbon neutral.

dense-pack cellulose sustainable insulation option

“If reducing your carbon footprint is a key goal, dense-pack cellulose is a fantastic choice,” says Bernie, GNI’s Training and Development Specialist. “Any material that was once a living thing is going to immediately reduce that footprint. Compare it to something made of metal, for example: think of everything it takes to make a metal object. Mining the ore, transporting it, then using a ton of energy to melt it down and form it. A lot less energy goes into creating paper, plus you're starting from a carbon-negative place.”

And there's an additional bonus: dense-pack cellulose is one of the least expensive insulation options. When you're already spending a lot to make a building as eco-friendly as possible (sustainability can be expensive), this is a place where you can save money and get an excellent result.

GNI is Ontario's dense-pack cellulose specialist

This material takes knowledge and skill to install. A technician has to know how to set up the machine correctly, understand how to set the right pressure, be able to sense when the right density has been reached, and properly sequence their work with other trades. As a result, not a lot of installation companies offer this option.

dense-pack cellulose cavity

GNI is focused on making the building industry greener and more environmentally responsible. We focus on using innovative materials – and training our staff to install them for the best results. Two in-house experts travel all over Ontario to help teams learn the nuances of installing the insulation.

Our team will even do research and development for specific builds, constructing model wall assemblies to ensure insulation is installed correctly and they are confident in the solution. We’re building deep expertise across our branches – and offering our customers more and better green/lower carbon options.

Talk to us about your green project.

As a company, our goal is to do everything we can for the ecological future of our planet. If you're thinking about eco-friendly options for your build, give us a call. “We want to have this conversation with anyone who's interested in following an ecological path with their project,” says Bernie. “Even if they don't choose to work with us, I'll be happy if we give them useful guidance – and help the industry get one step closer to a greener future.”

dense-pack cellulose photos

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Phone: 1-800-265-1914

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Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

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For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2021 Award

Best of 2021

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2021.

Homestars Best of 2022 Award

Best of 2022

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2022.


GNI is the Authorized & Trusted Insulation and Air Sealing Installer for Lowe’s

Enenrgy Savers

Energy Saving

Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

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Great Northern Insulation is recognized as Canada's largest full-service insulation contractor. GNI is 100% Canadian owned, proudly serving Ontario customers since 1980.

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- with foam mastersTM

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


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3MTM energy-saving products are designed to keep warm air in, and cold air out, while keeping energy bills down. Products optimize energy efficiency in buildings and homes; improve indoor environment for occupants; and effect the reduction of seasonal energy costs. 3M products are authorized for LEED credits (Leadership in Energy/Environmental Design).


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Holmes and Holmes

Holmes and Holmes


Mike Holmes and his son Mike Jr. (MJ) convert MJ’s bachelor bungalow into a two-storey home for MJ and his girlfriend Lisa. Choosing the newest materials and build techniques, the father and son team follow Mike’s famous motto – “Make it right.” The show can be watched on HGTV and DIY Network.


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