Strange roof decking


What type of roof covering?

Asphalt shingles

[FONT=FranklinGothic-Demi][size=2][FONT=FranklinGothic-Demi][size=2] Roofs
[/size][/FONT][/size][/FONT][FONT=FranklinGothic-Demi][size=1] Laying Sheathing
[/size][/FONT][FONT=FranklinGothic-Book][size=1] Before installing sheathing, make sure the
[/size][/FONT][FONT=FranklinGothic-Book][size=1] framing
underneath is level and not twisted.
[/size][/FONT][FONT=FranklinGothic-Book][size=1] Add shims or blocking as necessary to cre[/size][/FONT][FONT=FranklinGothic-Book][size=1]ate
a smooth, flat surface.
Panels should be installed with the 8’ length
[/size][/FONT][FONT=FranklinGothic-Book][size=1] perpendicular to support members. When
laying out sheathing, make certain that each
[/size][/FONT][FONT=FranklinGothic-Book][size=1] panel covers at least two spans and panel
[/size][/FONT][FONT=FranklinGothic-Book][size=1] edges fall at the center of a support. It may
be necessary to trim some panels. Make
[/size][/FONT][FONT=FranklinGothic-Book][size=1] sure that the “This side down” stamp is on
the underside. Layout rows of panels so
[/size][/FONT][FONT=FranklinGothic-Book][size=1] that end joints are offset by at least one
[/size][/FONT][FONT=FranklinGothic-Book][size=1] on-center spacing of the supports.,d.cWc

Understand but I am dealing with two layers of decking

In this same article They talk Roof and wall have different aps. Two layers for wall.

Vertical with supports, eh? Then, not the minimum of 3 supports (with the long dimension or strength axis) as indicated by the APA:

Were there plumbing vent holes or other vent holes, etc., that may give more info about the plywood on top. I’m not familiar with doing it like that, either.

As with all thing, they are subject to change, but I was always taught to install plywood and OSB horizontal. never vertical.

Was this on a hip section with step down trusses?

Not a truss built all purlin supported Not a hip roof

Me toooo I always see it horizontal never vertical but never two layers

And because it was two layers it was run opposing grain and size for maximum strength. Also was it nailed or screwed?

I wished there had been the house was total electric with minimum plumbing vents just almost the same size as the hole could not see squat


Larry If I am reading correctly the Apa rating is 7 which would indicate it must be supported every 7 inches vertically do you agree

fly on the wall, wag

  1. goofball installed decking wrong direction
  2. someone paying attention pointed out the deficiency = no pay until corrected
  3. “oh btw don’t even think of tearing it off, damaging it & my trusses to reuse correctly”
  4. goofball had new material ordered and installed in the right direction = made a check
  5. what isn’t seen is did the 2nd layer land on rafters correctly?
  6. were there a lot of shiners?
  7. what was the rafter spacing, appears over 24"?

Your prolly correct I am going to bust him and see what happens. I am thinking what my obituary lines are going to say. When the hair on the back of my neck stands up there is usually a reason!!!

Yep!! That’s probably how it happened.

it appears to be 24/16 see your rotated pic
thus my appears to be over 24" rafter spacing ?
that’s all you get for your BD until you answer me! :twisted:

appears to be 24/16 see your rotated pic, that reads 24" on center for roof 16" on center for floor
that’s why i asked appears to be over 24" rafter spacing? there may be more wrong than right
Ms. Cleo’s hotline is open i’ll be on the job from now until 1pm today, call me :wink:
that’s all you get for your BD until you answer me! :twisted: