When the time comes for a window replacement, stucco homes require special consideration. Window replacement does not have to cause damage or major changes to your stucco siding. However, you may encounter a more or less complicated project depending on your window frames and the size and style of your new windows.
The Process of Window Replacement in Stucco Homes
Taking measurements. Make sure to take multiple measurements in different locations across the height and width of your windows to ensure accurate numbers.
Removal of the existing window. If the new windows will fit perfectly into the existing frame, you can remove the existing sashes with a pry bar and other tools ranging from screwdrivers to metal saws. Homeowners can avoid the risks by calling window professionals.
If your window replacement will be smaller than the existing frame, fillers like wood slats can be added if the new window will be slightly smaller.
Cutting stucco. Stucco may need to be cut if your window replacement will be a larger or different size then the existing frame. This involves a careful process:
- Measure and mark the area to cut with chalk or score it with a utility knife.
- Saw away the stucco with a professional-grade rotary saw. You can chisel away more stucco as needed.
- Tap lightly at the stucco with a hammer and remove any crumbling areas.
Stucco will need to be carefully refinished after the window replacement. Because of aging and oxidization, you will need a different color to match the surrounding stucco.
Prepping the new window replacement. Before installation, the window frame should be thoroughly cleaned and resealed. The sash gets removed from the new window, and the window unit gets attached to its track with screws. Then it’s time to re-measure everything and apply wood or smart board shims to ensure a tight, square fit that prevents gaps.
Installing new windows in stucco. Exact directions vary by model and generally include sealing with foam and attaching the window replacement to the tracking and shims with screws. Additional steps depend on the type of window itself.
Altering your stucco can seem like a tricky and risky endeavor, but it’s possible to get a beautiful and energy-efficient window replacement you want. Window replacement professionals can help ensure the best results for both your stucco siding and the new windows.
2026 Update: Windows in Stucco Homes, Answered
Stucco makes people nervous. It shouldn’t, if you plan for it.
Do I have to damage stucco to replace windows?
Not always. Same-size replacements usually fit the existing opening with little or no stucco work. Changing the size means cutting and patching.
Can new stucco match old stucco?
Close, not perfect. Color shifts with age. Pros blend patches in by feathering the edges, and sometimes repaint a wider area.
Which installation method suits stucco homes?
Two options. A retrofit fits inside the existing frame and disturbs the least stucco. A full-frame install takes more work and gives more flexibility, but needs proper flashing and stucco repair.
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Planning a project in Sonoma County? Explore our window and door services or contact D&D Glassworks to talk with our team.
