Insulated Glass Units (IGU)
Energy-efficient double- and triple-pane glass for optimal insulation.
Fogged, cloudy or drafty windows almost always mean a failed insulated glass seal. RPM Glass replaces insulated glass units — just the glass, not the whole window or storefront frame — restoring clarity and efficiency at a fraction of the cost of new windows.
We fabricate double- and triple-pane IGUs with low-E coatings, argon fill, warm-edge spacers and tinted or laminated options for commercial storefronts, curtain wall, office windows and residential replacement. Units are built to match your existing frame depth and muntin layout.
For property managers, we offer building-wide fogged-glass surveys and phased replacement so tenants see clear windows and lower heating bills without a full facade project.
What's included
- Fogged / failed seal IGU replacement
- Low-E and argon-filled units
- Storefront and curtain wall re-glazing
- Residential window glass replacement
- Tinted, laminated and tempered IGUs
- Building-wide glass surveys
Frequently asked questions
Why is my window foggy between the panes?
The seal on the insulated unit has failed and moisture has entered the air space. The glass unit can be replaced without replacing the frame.
How much energy does low-E glass save?
Upgrading single-pane or clear double-pane glass to low-E argon units typically cuts heat loss through the glass by 30–50%.
Where we provide insulated glass
RPM Glass provides insulated glass units (igu) throughout Worcester County and MetroWest, including:
Ready when you are
Need glass installed or repaired in Stow?
Clear pricing, a crew that shows up, and 24/7 emergency service across Central Massachusetts and MetroWest.