How to Build Deck Stairs | Trex Academy



Learn how to build deck stairs for your Trex® deck. Get more information at: https://cur.lt/coh4j96mr and build the deck of your dreams.

Key moments in this video:
00:00 Intro
1:00 Determining the Stringer Rise and Run
7:00 Mark and Cut Stair Stringers
13:22 Stair Header Install
15:45 Stair Newel Post Layout
18:52 Install Temporary Layout / Support Block
22:34 Install Outside Stringers
23:05 Placing the Concrete Pad Form
28:41 Squaring and Securing the Concrete Pad Form
33:22 Install Bottom Newel Posts
38:07 Stringers to Header Connection
39:50 Add Trex® Protect™ to Stringers
40:50 Installing Treads and Risers
43:03 Installing Stringer Fascia
45:46 Recap

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43 thoughts on “How to Build Deck Stairs | Trex Academy”

  1. When adding that bottom rim-board it looks like that would add 1 1/2 to the run on the bottom step. I think you would need to cut the bottom run on the stringer an 1 1/2 shorter to allow for that.

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  2. You state that the end run of the stairs is 33 3/4 inches by multiplying 11 1/4 inch tread by 3. You later state that the stringer will have a 10 inch run per step. That doesn't compute. The run is 30 inches with a 1 1/4 nosing only at the end so the end of your stair will be 31 1/4 not 33 3/4. This should be corrected.

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  3. Excellent tutorial on the installation of this product. The woman talking through her nose was very similar to the sound of finger nails scratching across a chalkboard. I had to mute it every time she talked, very annoying.

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  4. This is a nicely done series. However they really breezed over a lot of the details on this one. Like how to hide the cut edges of the material on the ends of treads and cut facia. Looks like they just left it.

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  5. I do not know why the fascia was not installed first on the stair sides and then let the treads and risers lop over the reveal of the side fascia. It would appear a lot cleaner in my opinion.

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  6. Why not install the fascia on the stringers first and then install the risers and step boards so they hid the edge of the fascia showing?

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  7. @TheTrexCo You are using Simpson Strap-Ties (@strongtie) wrong! Those are NOT made for supporting a stringer to a header @38:33. They have a different one made for stringer supports. You have potentially 206K viewers that are making stairs with the wrong support.

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  8. Is there another option instead of fascia for covering the vertical part of the riser? Fascia would be pretty expensive for a large number of risers. Couldn't square trex enhance boards be used with one at 5.4 inches and another piece ripped to cover the remainder?

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  9. This is a good introduction but they are wrong on a couple things. For example all the decks need slope so the total rise should be measured with a level. Not a clamped 2×4 to your sloped deck.

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  10. I don’t like your idea for the facia on the stairs sides . I think it would look better if you had cut them to be under the run or treads . Did you treat the bottom of the posts for the railings? Thanks for the video.

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  11. Wished I'd have kept my bulldozer to drive up the steps with all those stringers. I've built a ton of stuff through the years and in this video I've learned not what to do. This is all overkill and pretty boring in my opinion. Nail the crap together and in 20 years people will want to replace it anyways.

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