I guaranty that this wasn't like this two weeks ago. I've lived in the house
2 years. I have no little kids nor do my older children hang around on the
deck. I charcoal grill about 18 feet from where the damage is.
I'll weigh in with my 2 cents. The pattern of melted tyvek seems to
indicate an outside source of heat, a fairly diffuse source at that.
The melted tyvek appears to be evenly spaced at the same spacing as
the siding overlap as evidenced by some dirt streaks on the un melted
tyvek. So wherever the siding came into contact with the tyvek, it
melted. Where the siding was spaced away, it didnt melt.
This indicates an outside source to me. I doubt it was lightning. As
some one else said, that would punch a hole. But it wouldnt just
punch a hole, it'd blast a hole.
I know someone who ruined an expensive swimming pool liner by using
some plastic milk jugs as weights to hold the pool cover down. They
focused the sun and melted right through the liner. This however
seems to large for that. The heat was applied over a substantial area
but focused over the largest tyvek hole.
You could neatly cut the tyvek and then reattach it with Pella tape sold
Lowes or Home Depot in their Pella window/ door department. I'm not sure
which one carries Pella but the one that does should stock the tape and it
will last as long as the tyvek.
The first shows definitely the heating shrunk the Tyvek and melted some
of it at the hottest point (which is where I thought it looked like the
center was previously). Can't tell through that tiny little spot what
the actual sheathing looks like.
Definitely need to cut the Tyvek and look under it to tell for sure what
it actually looks like.
Not at all surprising the wiring at the outlets looks ok, they're
removed from where the problem is visible altho certainly if they had
shown something that would have been indicative.
I don't think this has any chance of being lightning, it's more
indicative of a radiant heat source imo and lightning would have really
charred something in all likelihood.
I kinda' like Smitty's WAG -- didn't have a hanging mobile or something
at some point by any chance? Don't know orientation wrt sun, but one
thing the wife does that could be a problem if set in the wrong spot is
brewing "sun tea" in the big gallon glass jar -- put that thing on a
table outside the patio door and it would work really nice as he suggests...
I'd still explore more around that area under the Tyvek and if that
didn't satisfy me, it can't hurt to make the entry hole...
It should be possible to see if the charring (if any) is surface and
improves from the outside in or intensifies once there's an area to look
at in comparison to the surrounding area under the Tyvek, though.
Another WAG -- didn't have a service tech or somebody doing some
exterior plumbing or HVAC or other work that would have had a torch,
perchance? Looks a lot like a torch laid down on a temporary bench or
table pointing that way from a few feet away could have done...
Nobody has done any work outside of me staining the deck.
And, the grill is never moved near the house.
You know, when I say lightning, I don't mean a direct hit, but if the gutter
took a hit then it traveled down the house to ground and in the process
jumped from the siding to that deck railing or if hit the railing and tried
to seek out the wiring behind that wall to get to ground it might have been
diffused enough to do this.
Hey, I know I'm reaching here.
What does the sheathing underneath the Tyvek show?
I'm still convinced it was a heat source and strongly doubt even
I forget -- you got kids? Sure SO didn't do something while you were
out of town on that last business trip or something else you don't know
about occurred out there?
All right, I've been convinced by you guys to open up the wall.
Like has been said, little effort, great rewards.
Thank you to all of you. You all have been courteous in the face of my
stubbornness and this is why I point people in this direction when they have
I've been wanting to try out that saw blade I bought for my rotozip.
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