TL;DR
Low-E glass is window glazing manufactured with a transparent low-emissivity layer that cuts radiant heat transfer through the pane, improving both winter heat retention and summer solar control. It is now the default in code-compliant replacement windows because IECC prescriptive U-factor and SHGC targets are difficult to meet without it.
What it means
Low-E glass is window glazing manufactured with a transparent low-emissivity layer that cuts radiant heat transfer through the pane, improving both winter heat retention and summer solar control. It is now the default in code-compliant replacement windows because IECC prescriptive U-factor and SHGC targets are difficult to meet without it. A slight green, blue, or bronze cast under certain light is normal and is how installers confirm the coated lite is present and oriented correctly.
Where it sits in the glossary
Low-E glass is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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