Creating a Shed Dormer on a one story house with a low pitch for cathedral ceiling


BAMFhomes
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Hey everyone,

Hoping that someone can help me out and be a hero today!

 

Designing a tiny modular home that will be 1 story since it has to travel down the road on a trailer. It's 12' wide and has a classic 5/12 pitch A frame. All of the ceilings are cathedral to add height to the interior. To add more light and a feeling that its larger I want to add 2 or 3 "shed" dormers over the living area and the bedroom coming off the peak of the A Frame. Since this is such a small space the "auto dormer" looses its mind since there isn't enough space for its defaults. Ive exhausted all the how to videos and still now help.

 

Anyone out there got a method to get this drawn in?

 

As you can see the exterior just looks average, but by adding a shed dormer I can add some windows higher up to add in some more light and height. Due to regulations I can not just do a single slope roof which would be my preference. It's got to be no less than a 5/12 pitch. Government oversight at its best!

 

 

Screenshot 2026-04-01 at 10.29.12 AM.png

Screenshot 2026-04-01 at 10.29.31 AM.png

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Outside image, Dormer on the right is an "auto" dormer.

Dormer on the left is the "manual" dormer.

 

Inside the room, dormer on the right is the "manual" dormer,

dormer on the left is the "auto" dormer.

Both dormers require pitch and ceiling height settings to be adjusted, to make them work.

dormers.jpg

dormers 2.jpg

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You make it look so easy! lol

 

It just keeps telling me that the dormer can't find the back wall to attach itself to. Im afraid you will need to be a little more specific on how you got to do what you did. I know its possible, I just can't get there for some reason.

 

What you did is exactly what I wanted to do.

 

Thanks!

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https://www.chiefarchitect.com/support/article/KB-00449/creating-a-manual-wall-dormer.html

 

No matter how many time is use these instructions it never turns out right. Ive clicked every button on this thing and have wasted 5 hours of f@#$ing around and can't get anywhere. The issue seems to be that I am attempting to put a dormer in an attic space. All instructions are for a second floor. 

 

Please help!

 

 

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Ive gotten to the point that I can set up the walls and they extend the normal full height. Then I set the roof plane and get that on top of those full length walls. I can then manually lower those walls, but not matter what I do I can't get the roof plane to move down with it. 

 

Using those instructions for a wall dormer, the issue starts when drawing the walls- they are full height. I do check the box for them to be cut at roof height. What setting am I missing to get the roof to tie into the peak of the roof and lower the walls to match?

Screenshot 2026-04-04 at 5.55.23 PM.png

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