Steven L. Smith, Bellingham, WA Home Inspector (King of the House)

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Whatcom County Home Inspector (King of the House) -- Oriented Strand Board

 I have written about oriented strand board (OSB) a number of times before. The topic most often comes up when talking about L-P innerseal siding. However, OSB is available in sheets as well and is used for other applications such as sheathing that is covered by other material.

This photo below is one of the most unsuitable applications I have seen forOSB. The key to longevity, for this product, is keeping it dry. It is a shredded/chopped/glued back together wood product and, when moisture can get into the edges, ends, soak down into the top, it does not weather a whole lot better than a cardboard box. Now, in theory, the OSB sidings are made to be more durable -- if they are installed exactly right and kept painted, caulked and maintained.

The photos below show exposed trim that is cut from OSB. It was buckled, warped and de-laminating/decaying in a number of different locations. In some places they had tacked a metal flashing over it, to protect it but this was not working well at all. The second photo is closeup, so you can have a good gander at it. 

  

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Bellingham WA home inspections

Steven L. Smith

Steven L. Smith

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Comment balloon 8 commentsSteven L. Smith • January 30 2008 11:08PM
Whatcom County Home Inspector (King of the House) -- Oriented Strand…
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I have written about oriented strand board (OSB) a number of times before. The topic most often comes up when talking about L-P innerseal siding However, OSB is available in sheets as well and is used for other applications such as sheathing that… more
Home Inspection Puzzle: Guess Why?
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Okay, you were not there so this is hard to figure out. But some of the home inspector types like Charlie Buell will probably come pretty close or nail this one. And, since it is my puzzle, I get to give you the clues as I see fit. This was a… more
Blaine WA Home Inspection (King of the House): These Photos Will…
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Last night I was writing about floor damage, primarily around tubs and showers. The specific topic had to do with failed caulking For a simple topic, this garnered a surprising amount of interest as it is a problem everyone sees on occasion or… more
Bellingham WA Home Inspection (King of the House): Failed Caulking At…
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This is a simple blog, but I had this pretty good photo of a common problem and thought I would post it. When a home inspector checks a tub and/or shower, he or she should take a look where the floor and the tub meet. At the floor, especially if it… more
Safety and Seller Ethics -- Don't Know? Or Just Not Telling?
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Normally, when performing an inspection, I find that sellers really do not know the various problems at their home. That includes outlets that are not properly polarized or grounded (they do not know the difference if appliances work when they are… more
Point Roberts Home Inspector (King of the House, Inc): My Roof's Got…
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Woke up this morning and there was snow in Whatcom County. However, as of later this morning, the temperature has moderated and now the snow is turning to rain and slop. The wet and rain, melting on the deck and running out the downspouts and off… more
Positive Spin On Home Inspection Issues
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I have run into people who think that we home inspectors are too negative -- glass half empty types. To counteract that belief, I thought I would do something to the contrary. I have posted here a photo of a roof. Now, there are inspectors who… more
Bellingham Home Inspector (King of the House): Analysis Of An…
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A pest that we see often in the wooded Pacific Northwest is the carpenter ant. Carpenter ants are not all exactly the same size or color. In fact there are many different species but they get their name, as a group, because of the way the ants… more
Whatcom County Home Inspector (King of the House): Improper Flashings
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It is always kind of sad, sometimes amusing, when a homeowner knows that some component is required at the home but does not know the correct way to install it. Here is a photo of a metal flashing, above the eave on a sloped roof. The fellow who… more
Lynden Home Inspector (King of the House) -- Condo Electrical Safety
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Prevention is oh so simple but the condo association, or someone, has to realize that there is a problem waiting to happen, and a potential safety issue. First, let me set the stage for an emergency. After the scenario is over, it will be… more