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How much wieght can I put on my flat roof addition?

The addition is 15X24 (24 being the length of the house). 2X6 on 3 sides tied to block wall with 2X3 wall & 2X12 joists 12 on center. The foundation is slab on grade with a 10" knee wall. A fortress?

You didn’t mention the thickness of your of sheathing and whether it is plywood or osb. Are your trusses engineered and factory made or homemade without proper load transfer knowledge? Are you asking to determine what kind of roofing material to use or looking to store stuff on your roof? It’s hard to answer your question without knowing those answers. I’d play it safe and figure 50-75lbs per sq foot.

This entry was posted on Sunday, August 30th, 2009 at 12:08 am and is filed under addition. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

One Response to “How much wieght can I put on my flat roof addition?”

  1. Josh Says:
    August 30th, 2009 at 5:36 am

    You didn’t mention the thickness of your of sheathing and whether it is plywood or osb. Are your trusses engineered and factory made or homemade without proper load transfer knowledge? Are you asking to determine what kind of roofing material to use or looking to store stuff on your roof? It’s hard to answer your question without knowing those answers. I’d play it safe and figure 50-75lbs per sq foot.
    References :
    27 years building custom homes and remodels

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