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What are the Causes of Global Warming?

August 31, 2016

Around the world, the majority of respected climate scientists agree that the main cause of global warming is the human-influenced "greenhouse effect". This is essentially a warming of the Earth because the atmosphere is trapping heat that radiates from the Earth outward to space. There are certain gases in the atmosphere that block heat from radiating away from the Earth. Some gases are semi-permanent and don't respond to changes in temperature - these are seen as "forcing" climate change. Other gases do respond to temperature change - they are "feedbacks." Water vapour is the most abundant of the greenhouse gases. It increases in volume, as the Earth warms up, and accounts for cloud formations and precipitation - a very important "feedback". Carbon Dioxide is another important component in the atmosphere, and is released naturally by various means, but also through human actions, one of which is the burning of fossil fuels. Scientists have determined that humans have increased Carbon Dioxide levels in the atmosphere very substantially since the Industrial Revolution - an example of "forcing" climate change. Methane is another gas that's produced naturally (and through human action). Landfill waste and agriculture contribute to methane gas, while domestic livestock contribute through manure. When compared, methane gas is much more active as a greenhouse gas than carbon dioxide. But at the same time, atmospheric concentrations are less abundant than carbon dioxide. Nitrous Oxide is one of the more powerful greenhouse gases in the atmosphere. It's a bi-product of soil cultivation, especially with commercial fertilizers, and when fossil fuels are burned. Chlorofluorocarbons (also referred to as CFCs) are industrial compounds that are very regulated today because they are known to destroy the ozone layer. CFCs are also greenhouse gases. Planets that have little greenhouse effect - like Mars - have a thin atmosphere, comprised mostly of carbon dioxide. With very little methane or water vapour, the greenhouse effect is weak. Planets like Venus have a "runaway" greenhouse effect. Venus has 300 times the carbon dioxide as the Earth's atmosphere - it makes for a surface temperature that will easily melt metal. Human activities have contributed negatively to the "greenhouse effect". Burning fossil fuels like oil and coal has significantly increased concentrations of carbon dioxide. As for agriculture and industry, these have contributed to a lesser degree to concentrations of greenhouse gases. Beyond the causes of global warming, the after-effects are already evident. World temperatures are becoming warmer. Warm weather leads to more evaporation and more precipitation. Overall, some regions will become wetter and other regions will become dryer (even in extreme). The more intense the "greenhouse effect", the more prone oceans are to warm and glacial ice to melt. Ocean water also expands when it warms, which contributes to rising sea levels. In general, higher temperatures and changing climate change where crops will grow and thrive the best. The United Nations has concluded that in all probability (90%) human activities have resulted in human-produced greenhouse gases (carbon dioxide, methane, nitrous oxide). These are the main contributors to increases in the Earth's temperatures during the last 60 years.

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935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3

Phone: 1-800-265-1914

Fax: (519) 539-7946
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7035 Industrial Drive
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1027 Elwell Park Road
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Canada P1P 1R1

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29 Ferndale Industrial Drive
Barrie, Ontario
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Canada L9T 5A6

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Nepean, ON
K2R 1H4

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Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

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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

Best of 2020

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.

100% Canadian

100% Canadian

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

Foam Masters

Do it right the first time
- 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.


3MTM products.
Quality + Performance = Savings

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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Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

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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The Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – and Great Northern Insulation can pave the way.


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