Casement windows
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Glazing
Double-glazed windows
Specify the glazing, frame and installation as one system for a more considered approach to indoor comfort.
Request a project quoteCustom window sourcing from China · by ROGENILAN
Designed around your project
The details make
the difference.
- Opening
- Available with suitable fixed and opening systems
- Applications
- Residential and commercial comfort requirements
Double glazing uses two panes of glass separated by a sealed cavity. The glass types, coating, spacer, cavity and edge seal form an insulating glass unit, which then works with the frame and the building connection.
The phrase double glazed does not describe a single performance level. Whole-window results depend on the specific assembly, dimensions and testing method. State the performance required by your project rather than assuming one glass description will meet it.
When buying double-glazed windows from China, ask for the proposed glass build-up and the supporting documentation for the selected window configuration. Keep the agreed specification attached to the order and check it against the production drawings.
- Insulating glass units matched to the opening
- Low-E and other requirements reviewed by project
- Frame and glazing considered together
- Documented glass build-up for order review
From brief to specification
What to consider.
A starting point for selection. Final dimensions and configurations are confirmed through the quotation and drawing review.
| Decision | What to discuss |
|---|---|
| Glass unit | Two panes with a sealed cavity; build-up to be agreed |
| Coatings and cavity | Specify desired solar, thermal and visual characteristics |
| Frame compatibility | Glazing thickness and system suitability require review |
| Performance evidence | Request documentation for the selected assembly |
| Installation | Coordinate perimeter sealing, drainage and support |
Performance, compliance and suitability must be confirmed for the selected assembly and destination. No generic rating is implied.
Does double glazing guarantee a particular U-value?
No. Glass-only and whole-window values describe different things. A project-specific requirement should be checked against supporting evidence for the proposed assembly.
Is Low-E glass the same as double glazing?
No. Low-E describes a coating, while double glazing describes an insulating glass arrangement. A double-glazed unit may include a Low-E coating when it is part of the agreed specification.
What should I compare between quotations?
Compare the complete glass build-up, coatings, cavity, frame system, hardware, dimensions, documentation and installation scope. A price comparison is only useful when those items are aligned.
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