Solar heat gain coefficient
From anti-reflection to color tints, modern glass enhances design in many ways.
Whatever the construction challenge, we have the glass to help meet it.
See how the correct choice of glass can help transform a home – and even our wellbeing.
What modern glass can do
How and where glass is used
How glass is made and what it offers
Curved glass contributes to harmony between Victorian and contemporary design
When glass helps to create a comfortable learning environment
Floor to ceiling windows provide light, transparency and sweeping views of Central Park
Discover our showcase projects, captured through the lens of professional photography.
Explore Guardian Glass projects in your area and beyond with Google Street View and be inspired by the possibilities.
Search and filter through our wide range of products
See where you can buy Guardian Glass products near you
Become part of our network of professionals
Just as we were in 1932, we're ready to meet the challenges of now and the future
Find out more about how glass can support sustainable design
We strive for quality in everything we do
Access our comprehensive suite of engineering and analytical tools
Download and use our standardized Guardian BIM content to create project specific BIM files
For anyone who is interested in learning more about glass and its use
- Tools and resources
- Resources
- Glass glossary
- Solar heat gain coefficient
Solar heat gain coefficient
Is the sum of the solar direct transmittance and the secondary heat transfer factor of the glazing towards the inside, the latter resulting from heat transfer by convection and longwave IR-radiation of that part of the incident solar radiation which has been absorbed by the glazing.
See our solution to solar control and thermal insulation needs.
Access a wealth of technical notes to enhance your knowledge about glass!
Guardian Glass Training Center
Learn the glass fundamentals in a fun and interactive way, at your own pace!
Your search has taken you to Guardian's regional site. Products and services tend to differ from region to region (this may suit your needs if you are looking for glass in another area of the world). However, your local Guardian business is identified as being Guardian's regional site, if this is incorrect you can change your regional website settings here.