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Old 11-07-2012, 06:46 PM   #16
Chicago, IL
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Originally Posted by ironman_troop View Post
MAT test - can you elaborate, what that means?
RILEM (MATS) testing


Home Inspections, Infrared (Thermal Imaging) Leak Identification and Inspection Services, Roof, Attic, Building, Basement and Foundation Moisture Intrusion and Water Leak Inspections, Troubled Building Consultations - Serving Chicago and Suburbs
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Old 11-08-2012, 12:52 PM   #17
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I would have a real close look at the vent penetrations through the roof. Niether of them look like they have a good flashing detail applied to them. The link will show you a detail approved by the NRCA for vent stack flashing on a built up roof.

Any water that is entering around the vents could travel under the flat roof to the perimeter of the deck and down the wall.

Also make sure that the metal cap on the top of the wall is not your only water barrier. Those metal caps are made of pieces usually 8-10 feet long. They expand and contract and usually open up at the seams. Many times the only water barrier at the seams is a caulk joint. The flashing from the roof surface should run up and across the top of the parapet wall to the outside edge. The metal cap should only be there to protect the flashing, not to act as a water barrier.

Last edited by Maintenance 6; 11-08-2012 at 12:59 PM.
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Old 11-12-2012, 10:06 AM   #18
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Thank you

Hi all,

Thank you for all your inputs...
Few days a go we had an extreme rain, wind and hail and with the cmu wall is exposed.. I didn't find any water run or mark.. so the only thing I can come out is on vapor and condentation on the CMU blocks... I will water proof the cmu and use pt wood as stud (furring) and green board or moister retardant board and finish it..

Let me know what you final thoughts..



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