Revit

Revit Can’t Attach Wall to Roof?

Understanding Wall and Roof Attachments in Revit

Building designs in Revit often require the integration of interior walls with roofs. However, sometimes users encounter challenges when trying to attach walls to roofs effectively. Below are detailed steps to troubleshoot and resolve issues related to wall and roof connections.

Steps to Attach an Interior Wall to a Roof

  1. Select the Wall: Begin by highlighting one or multiple walls that need to be connected to a roof or other structural elements in your drawing area.

  2. Access the Modify Wall Tab: Navigate to the "Modify" tab specifically for walls. Within this tab, locate and click on the "Attach Top/Base" button.

  3. Options Bar Settings: On the Options Bar that appears after selecting the attach option, you will find a choice between "Top" or "Base." Choose "Top" to attach the upper end of the wall to the roof.

  4. Selection of the Roof: Finally, click on the roof or structural element to which you intend to attach the wall. This action will link the wall to the selected roof.

Troubleshooting: Unable to Maintain Wall and Roof Connection

If you find that a wall refuses to attach to a roof, it may be due to issues with the wall profile. Here’s a corrective approach:

  1. Selection of the Wall: Click on the problematic wall to select it.

  2. Reset Profile: In the contextual ribbon, look for and click the ‘Reset Profile’ option. This will erase any irregularities within the wall geometry that might be causing the attachment issue.

  3. Reapply Any Profiles: Once reset, the wall should now attach to the roof successfully. If necessary, reconfigure any wall profiles you previously had after the attachment.

Common Issues With Wall Joins in Revit

Walls may not join as intended for various reasons, but often it can be managed effectively:

  1. Disallowing Joins: Right-click on the blue boundary point at the end of the wall that you want to modify and choose "Disallow Join." This action prevents the wall end from attaching to adjacent walls.

  2. Adjusting Boundary Points: If necessary, drag the boundary point to ensure it’s positioned correctly at the wall’s limit.

  3. Re-enabling Joins: When you want to restore the wall’s ability to join, simply select the wall, then click on the corresponding icon that indicates a join can be re-enabled.

Detaching Elements in Revit

To detach a wall or any other element from its connected structures:

  1. Select the Target Wall: Click on the wall you wish to detach.

  2. Modify Column Panel: Look for the "Detach Top/Base" option under the Modify Columns tab.

  3. Choose Detachment Options: Depending on your needs, select a specific target to detach from, or use "Detach All" on the Options Bar to sever all connections between the column and the target.

Frequently Asked Questions

What should I do if the wall and roof still won’t connect after following the steps?

Ensure there are no other geometry issues causing the problem. You may want to check for overlapping elements or adjust the wall’s properties to ensure compatibility with the roof.

Can I prevent other walls from joining to a specific wall?

Yes, you can disallow joins for any wall by selecting the wall, right-clicking on the boundary point, and choosing the "Disallow Join" option.

Is there a way to merge multiple roofs together?

Yes, you can merge roofs by selecting the edge of one roof and then selecting the adjacent wall or roof. Use the "Join/Unjoin Roof" option within the Modify tab to achieve this.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.