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Wood to Earth Contact -- The Conducive Condition

By
Home Inspector with King of the House Home Inspection, Inc. Home Inspector Lic #207

 I explained in a previous post the term "conducive condition." It means any condition that is likely to cause rot or increase the odds of an infestation by wood destroying inspects. There are many such conducive conditions -- uncontrolled runoff water, plumbing leaks. But, in my view, probably the most basic conducive condition is the one that I see the most often -- wood to earth contact. 

When wood is in contact with earth (not simply soil but gravel and beauty bark, etc) that leads to high moisture content in the wood and, before too much time passes, the wood will be seriously compromised and decayed. Once decay hits, many of the wood destroying insects will be checking in shortly thereafter. And, in fact, some wood destroying insects, such as species of termites, will be attracted to that wood that is down in the soil even before it rots. Bottom line: Try to maintain 6" of clearance from wood to earth. 

          

         

Posted by

Steven L. Smith

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Sussie Sutton
David Tracy Real Estate - Houston, TX
David Tracy Real Estate for Buyers & Sellers

I have seen homes built before the 50's that have hardly no concrete slab...and with the wood siding going right down to the ground past the concrete! I can't stand these homes and most of them are in flood zoned areas...I ask my self why was this done this way?

May 15, 2011 07:54 AM
Robert Butler
Aspect Inspection - Montreal West Island, QC
Montreal Home Inspector | Aspect Inspection

We recommend an 8" minimum clearance, but like to see more as deep snow holds water ther for long periods.

May 15, 2011 08:47 AM
Steven L. Smith
King of the House Home Inspection, Inc. - Bellingham, WA
Bellingham WA Home Inspector

Robert,

I used to recommend 8 but we now go by IRC and that is 6.

May 15, 2011 09:06 AM
Jack Gilleland
Home Inspection and Investor Services, Clayton - Clayton, OH

This last winter 6 would not have been enough.  One whole block is better, but even that wouldn't have been enough.  Homeowner's don't know the extent of the damage that is caused by moisture.  Education is the best deterrent to damage.

May 16, 2011 06:25 AM
Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

You could probably post one of these every day of the year...

May 16, 2011 08:42 AM