Doug Miller wrote:

In article , "Pete C." wrote:
Doug Miller wrote:

In the original photo, the center of the damaged area can be seen to be at
roughly the same height as the handle on the sliding door. In the second set
of photos, that same handle is visible at roughly the same height as the
countertop backsplash -- thus, while some of the damage is indeed below the
cabinet top, not all of it is. Nearly half of it is above as well, and the
visibly damaged area on the outside definitely extends at least a short
distance above the top of the backsplash.

So suddenly OSB has the same fire rating as sheetrock? I'm sure the fire
marshal would be very surprised.

Where did I say that? First, you can't see things that plainly *are* there.
Now, you *are* seeing things that *aren't* there.

So you're claiming that a fire inside the wall that transfers enough
heat through the OSB to deform the vinyl siding is also certain to
transfer enough heat through the sheetrock on the other side of the wall
to show indications on the fairly dark painted wall surface?


I retract my suggestion that you have your eyes checked. The problem seems to
be an inch or two farther back.

Have you ever seen sheetrock exposed to a fire? The amount of steam
released on the side exposed to fire which carries heat away? The
significant lag time before the opposite side of the sheetrock begins to
heat to any significant level? The fire rating given to sheetrock vs.
OSB?

Pete C.