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Terry Black - TREC #1593
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Limited Visual Inspection: Walls (Interior & Exterior):
Walls (Interior & Exterior):
   
Mexican Brick.jpg (59934 bytes) This picture is weeds growing out of soft Mexican brick.
   
det wood.jpg (17758 bytes) When we inspect walls (interior and exterior) ; we look for the obvious and the not so obvious structural defects. For example, items like  deteriorated and dilapidated siding; deteriorated trim boards; etc.         Note: To our knowledge most if not all of the exterior sidings such as Louisiana Pacific, Masonite, and the Hard Board sidings are involved in major lawsuits. If you home is covered with these materials; you should try to get as much information as possible.
   
Hirdi plank.jpg (18070 bytes) On newer home where siding is used Hardi-Plank is the primary siding  used.  This is a very good product. The primary problem we find with Hardi-Plank products is improper installation!  The nails cannot be overdriven. (See photo). All nail heads in Hardi-Plank siding; facia; and trim should be snug to the surface of the siding. 
   
 Improper   installation of the product may void the manufacturer's warranty of it! 
   
siding ground contact.jpg (19633 bytes) Exterior siding cannot have ground contact. Hardi-Plank siding requires a six (6") inch clearance to ground contact. Wood based and/or hardboard sidings require eight (8") inch clearance to ground contact. This are manufacturer's installation requirements! With today's grading practices, this is very difficult to achieve and may void the manufacturer's warranties.  
   
wood in expanison joint.jpg (33785 bytes) Brick also can have installation problems. The photo to the left shows wood in an expansion joint. Brick cannot expand against a hard surface. The wood should be removed from the expansion joint; and Styrofoam installed; and properly caulked.  
   
wpe2.jpg (13572 bytes) The photo to the left is the inside of an exterior wall cavity. As you can see, numerous wall ties (wall ties secure the brick to the structure) were not used. The wall ties are there but were not installed. The lack of properly installed brick ties weakens the brick wall. 
   
blocked weep holes.jpg (28703 bytes) We often find weep holes in brick blocked by [brick] mortar. The weep holes serve three functions. 1) They let water out of the wall;  2) they let air in to keep the inside of the wall dry; and 3) they depressurize the wall. The mortar has to be cleaned out from behind the brick The only way the mortar can be cleaned out is to remove the brick.
   
no vapor barrier behind siding.jpg (27136 bytes) All manufacturers of exterior siding require that a vapor barrier be installed behind the product, per their insulation instructions . The lack of vapor barriers can void manufactures warranties!    
   
water and WD damage.jpg (31290 bytes) Wood destroying insects do a tremendous amount of damage to wood structures. This type of damage can be difficult to find in a Limited Visual Inspection as home inspectors are not allowed to perform destructive testing! That is, actual tearing back of sheetrock, carpet, etc. to show the actual damage done. Note the evidence of water penetration. 
   
wpe13.jpg (9999 bytes) Leaking plumbing did major structural damage to the wall in this bathroom.
   
Damaged base borad.jpg (24239 bytes) This is what I call disposable MDF baseboard.   
   
wpe5.jpg (35873 bytes) This is all that is left of a wall stud. Wood destroying insects (termites) consumed the entire wall stud.
   
Related Information:
Insulation Insulation Mistakes Vapor Barrier
Hardi-Plank Wood Decay Wood Framing 

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TREC #1593

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