Salt Box Roof

by Michael
(Calgary)

Rough Sketch

I want to build a 12:4 sloped salt box shed roof with over a 12 ft span. The roof will rise 1 foot over 3ft and then drop 3ft over 9ft. I'm concerned about the necessity of collar ties or rafter ties. I was thinking about tying a board off the top plate of the highest wall to a rafter, similar to how a collar tie is used, but since the tie board remains high off the low wall I'm not sure you can call it a collar tie. It's kind of a half collar half rafter tie (isn't it?) and I'm not sure that this is a structurally sound idea. Could you provide me with some advise on this? The roof will see snow in winter.

Comments for Salt Box Roof

Average Rating

Click here to add your own comments

Sep 23, 2020
Rating

by: John

Hi Michael,

From what I can see in your drawing it appears to me that it would stop any spread you might get or at least slow it down!! If it was me I would do the same thing. I am not an engineer or architect so I cannot say for sure.

Good luck with your project and I hope this helps you out and thank you for visiting my site. If you have any more questions please email me: john@shedking.net

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Shed Roof Questions.

Share this page:

What’s this?

Facebook Twitter

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

Click on the HTML link code below.
Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.