Meat Plow wrote:

On Sun, 29 Jul 2007 13:47:35 -0400, CraigT wrote:


kjpro @ usenet.com wrote in message
...

"CraigT" wrote in message
. ..

"Meat Plow" wrote in message
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On Sun, 29 Jul 2007 12:50:36 -0400, CraigT wrote:


"Meat Plow" wrote in message
...
On Sun, 29 Jul 2007 12:29:46 -0400, CraigT wrote:

Originaal post:

http://pics.bbzzdd.com/users/Squisher/IMG_6627.JPG


There are no heat sources behind that wall besides a toaster oven
that
sits
on the counter top and is seldom used. I would think any heat source
from
inside would have caused some damage to the cabinet directly above.
This
is
new housing so the walls are insulated.

I haven't used any chemicals on the deck since the spring of '06.

Update:

I got the siding off (hey, it's been raining around here).

http://pics.bbzzdd.com/users/Squishe...denosiding.JPG

http://pics.bbzzdd.com/users/Squishe...ecoversoff.JPG

All the electrical wiring and connections look sound and
unblemished.

The switch for the outside light is a different circuit, but that
outside
outlet is hooked to the kitchen circuit too.

Should I cut a 16" X 8" hole in the sheathing?

Looks like the plastic over the the outside sheeting has been melted
by
heat. You've got to remember what you might have had on the deck that
heated up that area. Either that or someone poured a flammable
substance
on it and tried to set your house on fire or vandalize it.

Sorry, we kind of went over this in the last thread. No heat source
was
the
cause unless I had a lightning strike.
Some felt it was my use of chemicals during restaining in the spring
of
'06
redused the siding's sensitivity to sunlight.

The plastic cover on the sheeting underneath the siding is melted and
the
wrinkles around it indicate a source of heat. You can come to any
conclusion you desire but the sensible and logical answer is a source
of
heat caused that melting.

The more I stare at this the more I think it was a lightning strike.

Notice the wrinkles in the Tyvek correspond to the indents of the siding.
Yes the heat source was outside, melted the siding, and where it touched
the
Tyvek it distorted/melted it too.


What says it wasn't from inside the wall and where the siding was touching
the Tyvek, it was acting as insulation/heat sink and absorbing the heat?

In the other areas, the heat was able to be absorbed by the air and be
carried off with little damage.

But if the source of the heat was from the inside wouldn't we see MORE
damage to the Tyvek than the siding? And, the pressboard seems to have no
damage at all.

The plastic under the siding would have been exponentially more melted had
the heat source been underneath it. I doubt that lightning was the
culprit, there would have been much more damage. Got any kids around who
like to play with fire?

Have you checked the melting point of Tyvek (polyolefin) vs. the siding
(polyvinyl) vs. the temp required to discolor the OSB siding?

My take on it based on what I've seen is that either one of those green
washered nails, or a screw from securing the inside counter has clipped
a wire and at some point arced and caused a fire inside the wall that
thankfully self extinguished.

I would immediately open up that wall cavity to investigate before it
happens again and the whole house potentially goes up.

Pete C.