The install can waste the glass
A high-performance unit set in a foamed, unflashed opening will still wet the wall and draft at the trim. Efficiency includes the install.
WINDOWS · PERFORMANCE
Energy-Efficient Windows
Old single-pane and failed dual-pane windows are a hole in the heating bill from November through March. We replace them with low-E insulated glass in vinyl or fiberglass frames, specified for a marine climate: a coating that keeps heat in, a spacer that does not fog at the edge, and an air seal the sash can still operate. The U-factor and the SHGC go in the estimate in plain language, not as a logo.
Included in this scope
- Dual-pane low-E glass, with triple-pane where the room and the budget justify it
- A frame material chosen for color, stiffness and the U-factor you are buying
- Warm-edge spacers and a sash that locks against a real weatherstrip
- Installation that does not leave the new efficiency leaking around the frame
- The numbers — U-factor and solar heat gain — written down
Details that change the result
South glass versus north glass
A west-facing slider in July is a different problem than a north casement in January. We do not spec one coating for every opening without looking.
Pair it with doors
The patio door is often the worst opening on the house. If we are replacing the windows, price the slider with them.
Where this fits
Related pages
Most projects touch more than one trade. These are the pages homeowners open next, and the scopes we most often bundle into a single estimate.
Questions
Before you call
Will this qualify for a rebate?
Sometimes, when a utility or the manufacturer is running one and the U-factor qualifies. We will not promise a rebate in the contract. We will hand you the NFRC label so you can file whatever is real that month.
Are triple-pane windows worth it?
On a noisy street or a wall of glass, sometimes. On a standard bedroom, good dual-pane low-E is usually the smarter spend. We will not upsell a third pane you will not feel.
Do you replace the frame or use an insert?
Full-frame when the old frame is rotten, out of square, or the wrong size for the glass you want. Inserts only when the existing frame is sound and you accept a slightly smaller glass. We say which one on site.
Ready when you are
Get a written estimate this week
Call (425) 555-0123, or send the form and we will schedule the visit. We reply within one business day.