12’x24′ DIY Shed Build (Part 4 – Roof)

Welcome to part 4 of our shed build showing the roof framing, sheathing, and papering. The metal roof installation will be shown in a future video. In this video we show the rafter, blocking, and fascia installation, along with the plywood sheathing and synthetic underlayment for the metal roofing.

This will be a 12'x24' wooden shed with a single slope metal roof and LP SmartSide siding.

I'll try to summarize some of the construction stats/key points here:

FLOOR:
– 12' x 24'
– 4' x 4' treated skid foundation
– 2" x 8" joists @ 16" OC
– 3/4" plywood subfloor

WALLS:
– 2" x 4" construction with double top plates
– (3) 3' x 2' sliding windows
– DIY double door – 59” x 80”
– 1/2" OSB sheathing
– House wrap
– LP SmartSide paneling

ROOF:
– 16' x 27'
– 1.5-in-12 pitch (minimum recommended by metal roof mfr), single slope
– 2" x 8" rafters @ 24" OC
– 1/2" plywood sheathing, with sheathing clips
– Synthetic roofing paper
– 29 gauge galvalume metal roofing panels (3' x 16' each)

Please let me know down below if you have any questions or comments, and stop back to see everything go together. Thanks for watching!

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*** Clips:
Office Space: “Stapler” – https://www.youtube.com/watch?v=KqxjRzzGn8k

*** Music:
Outro – Fresh by MBB – https://soundcloud.com/mbbofficial

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30 Responses

  6. Great video Brian! This project is helping me to think through a similar structure I will be building on my 10 acres near Gleeson. Looking forward to future posts.

  9. Hey Iceman, that looks really great.I like it so much that I think this is what I’m going to build for the mini shop. I’ve really been enjoying watching this build

  11. Wait…your blocking between rafters on the should be vented both the upper AND lowers.
    Your attic needs to breathe, unless… the inside ceiling is open.

    Home depot may have your size OR drill 2 or 3 vent holes with a spade bit then cover with mesh to keep bus and birds out.
    Hope you get this before it gets sealed up. Dean in Phx.

    1. Thanks, Dean.  I’ll admit I didn’t realize that at the time, but I’ve been thinking about ventilation since then.  The question is how much venting I need?  If I have gable vents high up on each side of the ceiling, is that enough?  Luckily, I’m still in a position to put holes in the blocking, if necessary, but I’m just not sure how much I need to do.  I was also thinking of covering up the overhang on the outside with a soffit (just plywood cover over the exposed rafters from wall to outer roof edge).  Does this all have to be vented if there are gable vents high on the inside walls?  I’m bummed that this wasn’t really a consideration up to this point, but I think I’m still in a position to fix it if I just know how much and what kind of ventilation is necessary.  Thanks for your input!

    2. @MidlifePrices Hi Brian, if the ceiling area will be open to room below, it does not matter.

      If you seal off the attic, then FOR CERTAIN you should bore holes in high and low side to let rising warm air out. Especially in our climate.
      Soffits are ok, they become home for many small critters, thats why i like to avoid them.
      Avoid putting insulation up against the plywood in any case. Should be at least 1″ gap for air travel. Homedepot does sell plastic pcs that create air spaces. https://www.homedepot.com/s/insulation%2520baffles?NCNI-5.
      best wishes.. we are looking into Cochise, currently in Fountain Hills.

    3. @MidlifePrices Sorry i did not directly answer your question.. in each 24 ” blocking, drill 3 holes with spade bits approx 1.5 inch diameter (or larger), then cover with mesh to keep out bugs and birds

    4. Oh, ok.  There is no attic in there, just open from floor to roof.  Hopefully the gable vents are enough, but I’ll still have access for a while to open up more, if necessary.  Don’t plan on doing any interior finishing in the near future.  Just studs and rafters.  Probably will insulate someday, but not for a while, at least.  Thanks, again, for the advice.  Good luck on your search!

  12. Hey Brian, I want you to know that this video explained several things to me that I always wondered about building a structure! Such as the birds mouth cut and the blocking! Thanks!

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