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Ferndale, Wa
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Lakewood, WA
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Vinyl Siding over LP Lap Siding
[#2] Posted: 03/29/2012 - 6:56:37 PM |  |  |
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Was there no weather barrier installed? The lap siding is not required to be installed on sheathing, it can be installed directly to the studs that have been "wrapped". Not sure about the shear strength thing...
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Rob Jones
South Sound Inspections
Seattle Home Inspection
"If you work just for money, you'll never make it, but if you love what you're doing and you always put the customer first, success will be yours."
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Lafayette, Louisiana
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 Vinyl Siding over LP Lap Siding
[#3] Posted: 03/29/2012 - 7:18:33 PM | | |
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There's alternatives to sheathing as a provider of shear strength. Steel diagonal bands or 1X4 'let-in' to the studding. I wouldn't consider the lap siding as contributing anything to shear strength.
It would be very odd in my area to find a 94' structure without exterior wall sheathing, but then I live in a 110 mph wind zone.
Marc
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Gaston, Oregon
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Vinyl Siding over LP Lap Siding
[#4] Posted: 03/29/2012 - 8:07:15 PM | | |
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The entire wall need not be sheathed to achieve the necessary shear strength. Nowadays, we use 'brace panels'. In 1994, as I recall, there were rules that governed the specific placement and percentage of the wall that needed to be reinforced to achieve the necessary lateral strength.
Bottom line, just because you can't see the sheathing in the places where you look doesn't necessarily mean that the structure is defective.
Were you concluding that the sheathing was absent based on looking at it from the attic - at a gable end perhaps?
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Jim Katen, Oregon
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Ferndale, Wa
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Vinyl Siding over LP Lap Siding
[#5] Posted: 03/31/2012 - 7:25:21 PM | | |
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No, I could see there was no sheathing down by the crawl space entrance. The entrance was through the wall on the exterior. I could see all layers. 2x4 stud walls, house wrap, LP Lap siding, and then the new Vinyl siding over that.
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Newberg, OR
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Lafayette, Louisiana
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Kenmore, WA
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Ferndale, Wa
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Vinyl Siding over LP Lap Siding
[#9] Posted: 04/02/2012 - 09:09:39 AM | | |
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Yes I did and no there wasn't a WRB between the vinyl and LP. NO other structural panels either. Builder was from Canada. Built 4 houses in this neighborhood and left never to be found again. Buyers ended up walking away.
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Kenmore, WA
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