Creating a Prow Roof


Reference Number: KB-01197
Last Modified: August 4, 2020

The information in this article applies to:

Home Designer Professional or Home Designer Architectural or Home Designer Suite



QUESTION

I would like to create a prow roof, where a gable-style wall juts out a few feet farther than the rest of the structure. How can I use Home Designer's automatic roof tools to accomplish this task? 

Farm area containing a structure with a prow roof


ANSWER

Creating a Prow style roof in Home Designer is easy by properly defining the correct walls as High Shed/Gable. To begin, start with a basic plan, as in the image below.

Prow roof floor plan of the initial walls

Once you have your new plan created, you are ready to start defining the walls to create a prow style roof.


To create a prow style roof

  1. First, use the Select Objects  tool to select the back straight wall, and click on the Open Object  edit tool to display the Wall Specification dialog.


  2. On the Roof panel, select the Full Gable Wall option, then click OK to apply this change.

    Setting the back wall as a Full Gable Wall


  3. Next, use the Select Objects tool to select one of the angled front walls, and click on the Open Object  edit tool to display the Wall Specification dialog.


  4. This time, on the Roof panel, select the High Shed/Gable Wall option.

    Setting the two front angled walls as High Shed Gable Walls


  5. Repeat this process for the other front angled wall, so that both are defined as High Shed/Gable Walls.


  6. Next, select Build> Roof> Build Roof *, then click OK to generate a roof over the structure.

    *In Home Designer Pro, place a check in the Build Roof Planes box before clicking OK.


  7. Take a 3D Camera view to see the results.

    Prow roof perspective view

Now that you have a basic understanding of how to create this style of a roof, you can use invisible walls to create a room that will allow for extending the roof out further.

 

To extend the roof out further

  1. Select Build> Wall> Room Divider , then in a clockwise fashion, click and drag out four invisible walls attached to the front of the structure, as shown in the image below.

    Building a room outside the prow roof using room dividers


  2. As you did with the front two walls in the last section, use the Select Objects tool to select one of the angled front Invisible walls, and click on the Open Object  edit tool to display the Wall Specification dialog.


  3. Select the High Shed/Gable Wall option, then click OK to apply the change.


  4. Repeat this process for the other front angled Invisible wall, so that both are defined as High Shed/Gable Walls.


  5. Next, select Build> Roof> Build Roof , remove the check from Auto Rebuild Roofs*, then click OK to regenerate a roof over the structure.

    *Again, in Home Designer Pro, remember to place a check in Build Roof Planes before clicking OK.

    Roof planes in floor plan view with the new room

Now that you have regenerated your roof, you will need to modify this room created with room divider walls so that it does not generate a ceiling over the room, allowing your structure to appear as though just the roof juts out over the area.


To remove the ceiling

  1. Next, use the Select Objects tool to click inside of the room to select it, and click on the Open Object edit tool to display the Room Specification dialog.

     
  2. On the General panel, let's use the Room Type drop down menu to select the Slab option.


  3. On the Structure panel, increase the Finished Ceiling to 194", uncheck Flat Ceiling Over This Room, check Use Soffit Surface for Ceiling, and be sure to leave Roof Over This Room checked.

    Turning off the flat ceiling and setting the room to use the soffit surface for the ceiling.


  4. Click OK to apply these changes and close the dialog.


  5. Finally, take another 3D Camera  view to see the results.

    Perspective view with the prow roof extended out further

  6. At this point, if you do not choose to rebuild the roof (and uncheck Auto Rebuild Roofs in the Build Roof dialog), then you can delete this temporary slab room after the roof is created.

    Please note that the Home Designer Pro version of the software, which allows for manual editing of roof planes, does not require creating a temporary room unless you use the automatic roof tools.

You are now ready to take the information you have learned in this article on how to create a prow style roof, and apply it to your own design.