How to Use Adjustable Supports to Level a Deck

When building a deck on a sloped roof, it’s difficult to achieve a level surface without penetrating the roofing material. The solution is special adjustable deck supports from Bison Innovative Products.

Bison adjustable deck supports can hold up to 1,500 pounds each and are adjustable from 0” to 24” in height. This allows you to fine-tune the elevation and pitch of each support. Pads are placed under each support to cushion the roofing material from damage.

Watch this video to find out more.


  1. Where can these be bought? How far apart is recommended? Do they slide on metal roofing? We plan to put a deck on our back upstair roof. These are questions that come up as we watched your presentation.

  2. Hi , can these adjustable supports be used on the ground which has 3/4 washed stone. Due to a massive tree’s roots, I need close to a 8 to “ difference on each side! It’s going to be just a floating deck.


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