Short answer: choose retrofit when your existing frames are square, solid, and not leaking, and you mainly want better glass. Choose full-frame when the old window leaks around its edges, the frame is damaged, or you want a different size, style, or slimmer frame. Your home's construction (block or stucco over wood frame) and age usually point you one way before anyone measures.
The two methods in plain words
- Retrofit (also called insert or pocket replacement): the old sash and glass come out, the old frame stays, and the new window is set inside it. Exterior trim covers the joint. There is little or no stucco work, and it is usually faster.
- Full-frame (also called new-construction style or nail-fin replacement): the whole old window comes out down to the rough opening. On stucco homes the stucco is cut back around the opening so the new window can be fastened and flashed to the framing, then the stucco is patched and painted.
A third variation you may hear about is a block-frame or "jump-frame" install, where a replacement frame with a flange covers the old frame. Ask any dealer to name exactly which method they are quoting for each opening.
How your house is built changes the answer
Slump block and masonry homes (common in older south and central Scottsdale, Old Town, and many 1970s and 1980s homes in McCormick Ranch and Gainey Ranch): windows sit in masonry openings rather than in a stucco-wrapped wood wall. Removing the old frame often doesn't involve stucco cutback at all, and it can keep more glass area and a deeper interior ledge for shutters and blinds. Expect some interior drywall or plaster touch-up where the old frame comes out.
Stucco over wood frame (most 1980s-to-2000s homes in north Scottsdale, including Grayhawk, McDowell Mountain Ranch, and DC Ranch): a retrofit avoids cutting stucco, which is why it's common here. But stucco is not waterproof on its own. If water is getting in around the old window, a retrofit leaves the original frame and its flashing in place, so it may not fix the leak. That's the main case where full-frame is worth the stucco patch.
Custom and hillside homes (Paradise Valley, Silverleaf, Troon, Desert Mountain): big fixed glass, odd shapes, and slim aluminum or steel-look frames often push toward full-frame work, especially when the goal is a slimmer sightline or a larger opening.
Signs you probably need full-frame
- Water stains, bubbling paint, or soft drywall below or beside a window
- Cracks in the stucco running out from the window corners
- A frame that is out of square, bent, rusted, or rotted (press near the bottom corners; give or softness is a red flag)
- You want to enlarge an opening, turn a window into a door, or change the window style
- You want the thinnest possible frame on a view wall
Signs retrofit is probably fine
- The frames are solid, square, and dry, and the problem is the glass: heat, fogging between panes, or single-pane noise
- There's no history of leaks around the window
- You'd rather not repaint the exterior, or your HOA makes stucco and paint changes harder to approve
What changes with each method
| Retrofit | Full-frame | |
|---|---|---|
| Stucco work | Little or none | Cut back, patch, and usually repaint |
| Visible glass | Often slightly smaller | Keeps or can enlarge the opening |
| Fixes leaks around the frame | Not if the leak is in the old frame or flashing | Yes, with new flashing to the framing |
| Changing size or style | No | Yes |
| Disruption | Lower | Higher |
HOA and permits
If you're in an HOA, the architectural committee cares about the finished look: frame color, grids, trim, and any stucco or paint change. A full-frame job that needs repainting may need that covered in your submission. On permits, don't assume a like-for-like swap is exempt: the City of Scottsdale's Home Improvement page lists "adding or replacing windows, except for replacing the glass in an existing frame" under a Minimum Window/Door Permit, whether the job is retrofit or full-frame. Size changes and new openings need a building permit. In Paradise Valley, applications go through the Town's Citizen Portal. See our guide to HOA approval for new windows in Scottsdale.
Questions to ask every dealer
- Which method are you quoting for each window, and why?
- If it's full-frame, who patches the stucco and paints, and is that in the price?
- If it's retrofit, how much glass area will I lose, and what trim covers the old frame?
- How will you flash and seal the window against monsoon rain and dust?
- Who pulls any permits, and who prepares the HOA submission?
These answers are also the fairest way to compare quotes, since two prices for different methods aren't really the same job. More on that in what affects window replacement cost in Scottsdale.
Not sure which your home needs? Lux Views Co. is a free referral service: fill out the short form below, and we'll connect you with a licensed independent dealer who can look at your frames in person and put the recommended method in writing.
Frequently asked questions
What is the difference between retrofit and full-frame window replacement?
A retrofit (insert) window is set inside the existing window frame, so the stucco and drywall around it are mostly left alone. Full-frame replacement removes the old frame down to the rough opening, so the new window can be flashed and sealed to the house the way a new-construction window is.
Is retrofit or full-frame better for an Arizona stucco home?
Retrofit is usually the simpler choice when the existing frames are square, solid, and not leaking, because it avoids cutting and patching stucco. Full-frame is usually the better choice when the old window leaks around its edges, the frame is damaged, or you want to change the size or style of the opening.
Do retrofit windows make the glass smaller?
Usually a little, because the new frame sits inside the old one. How much depends on the product and how the dealer trims it out, so ask to see the finished sightline on a sample or a photo of a similar install.
Does full-frame window replacement need stucco repair?
On a stucco-over-frame home, yes. The stucco is cut back around each opening to reach the window's nailing fin, then patched and usually repainted, and weathered stucco can be hard to match exactly.
Do I need a permit for full-frame window replacement in Scottsdale?
Usually, yes, for retrofit and full-frame alike. The City of Scottsdale lists adding or replacing windows, except for replacing the glass in an existing frame, under a Minimum Window/Door Permit, and changing an opening's size needs a building permit. In Paradise Valley, permits go through the Town's Citizen Portal.
