Insulation
Low-emissivity coatings reduce radiant heat transfer through the glazing.
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Glass & energy · 2 min read
Choosing Low-E glass by room and orientation
Balance insulation, solar gain, glare and visible light instead of assuming the darkest or lowest-SHGC option is always best.
At a glance
Solar control
Different coatings admit different amounts of solar heat.
Daylight
Visible light and exterior appearance can change with the selected package.
The useful decision
Balance insulation, solar gain, glare and visible light instead of assuming the darkest or lowest-SHGC option is always best.
Start with exposure
Large west-facing glass may need stronger solar control than shaded north-facing glass. Overhangs, trees and neighbouring buildings also change the result.
Include the room
Comfort near the glass, daylight, furnishings and heating or cooling priorities matter. Treat appearance samples as part of the decision.
Confirm the package
Coating surface, pane count, spacer and gas fill form one package. Confirm compatibility and performance for the selected product and size.
Compare double and triple as complete products
Pane count is one part of the selection, not a substitute for checking the proposed window or door. Ask which double- or triple-glazed make-ups are available for the exact series, size and operation. Compare the documented result for each complete configuration rather than transferring a value from a different model or brochure example.
Bring a short comparison checklist
For each option, record the product series, glass make-up, intended room and orientation, appearance sample and quotation reference. Identify which details are confirmed and which still need review. Ask about the specific proposed package; this guide does not establish a universal performance, price or comfort advantage for every triple-glazed or double-glazed unit.
Bring this to the conversation
Project checklist
- Record the direction each important window faces.
- Note overhangs, trees and nearby buildings that provide shade.
- Identify rooms with overheating, glare or fading concerns.
- View a physical glass sample before final approval.
Avoid assumptions
Questions worth answering
- Is the room uncomfortable in afternoon sun?
- Is passive winter solar gain desirable?
- What appearance and visible-light level are acceptable?
Continue with trusted information
Useful resources
Before final selection
Compare glass options
Confirm the exact product, current documentation, applicable codes and project conditions with the appropriate project professionals and Morrison team.
