Is a Revit ʼType Parameterʼ used to change every window of that size?
Short Answer
Yes — in Autodesk Revit, a Type Properties change to a window type will update every instance of that same window size and type throughout the project. This is the standard professional method for controlling repeated window dimensions efficiently. Limitation: it only affects instances assigned to that exact type.
What You Need to Know Before
Warning: Editing a window type can unintentionally change dozens or hundreds of windows at once, including in sheets, schedules, and dependent views. A common failure is modifying an existing type when you actually needed a new size variation, which causes unwanted project-wide changes.
How to Change Every Window of That Size
Command: Type Properties
Shortcut: No default keyboard shortcut
Quick Steps:
- Select a window instance in the model or in a view, then go to the Properties palette.
- Click Edit Type to open Type Properties.
- Change the size-related parameter such as Width or Height, then click OK to update every window using that type.
Variables & Settings
Key Setting: Type Selector in the Properties palette
Expert Setting: The Type Selector controls which family type an instance uses. If multiple windows look similar but belong to different types, changing one type will not update the others. Use Duplicate in Type Properties first if you need a new size without affecting the original type.
Why it Fails
- Cause 1 (Geometry): The window family may not have size parameters built as type parameters; some families use instance parameters instead.
- Cause 2 (layers/Locks): The window may be hosted in a wall with constraints or related geometry that makes the size change fail or produce warnings.
- Cause 3 (Command/Logic): The selected windows may not actually be the same type, even if they appear to be the same size.
Quick Fix & Best Practice
- Quick Fix: Select the window, click Edit Type, then use Duplicate before changing Width or Height if you want a new size without changing all existing matching windows.
- Manager’s Verdict: Use type parameters for standardized window sizes across a project; avoid editing an existing type when the design intent requires only one or a few exceptions.
FAQ
Does changing a Revit type parameter affect all instances?
Yes, all instances using that same type update together.
Can I change only one window without affecting the others?
Yes, duplicate the type first, then assign the new type to that one window.
Why didn’t all same-size windows update?
They are likely different types or from different families.
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