When flashing goes wrong.

By
Home Inspector with Greens Home Design L.L.C. AZBTR #49380

When flashing goes wrong.

It is always a bad sign when there is a tarp on a roof.  Tarps are meant to temporarily keep water off of things.  They don't stand up to the hot Phoenix sun.  When I saw this tarp I just had to see what was under it.

Tarp on a roof

Here is what I found when I uncovered it.

Bad flashing

This flashing must have been a patch just like the tarp was a temporary patch.  The vertical flashing should be behind the stucco to catch any moisture that penetrates through.  The horizontal flashing should be under the roof tiles.  Caulking like this has to be repaired often.  The best method of flashing to use here is step flashing.

Here is a diagram of step flashing from NACHI.

Step Flashing

The end result of this temporary patch is a large water leak.

Water Leak

If the first leak had been patched properly perhaps all this damage could have been avoided.

Loren Green

Greens Home Design

"Where Art and Building Science Come Together"

For all your Arizona House Plans and Phoenix Home Inspection needs contact me.

602-326-4061

Comments (2)

Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

At least that glue is protected from the sun, so it should last a long time!    ;>)

Jan 19, 2012 07:08 AM
Loren Green
Greens Home Design L.L.C. - Buckeye, AZ
Phoenix Home Inspector & Designer

Exactly what they thought.

Jan 19, 2012 07:17 AM