When the termination bar at the top of the base flashing spans tilt-wall joints and is fastened on both sides of the joint, slight building settlement can cause fastener failure and open the top of the flashing to water infiltration.
They almost had it right here. They should not have put those last fasteners in the ends of the termination bars. (See next picture.)
This is how you do it properly so differential movement of the wall panels during building settlement doesn’t lead to fastener and termination bar failure.
Joint sealant deterioration is a constant issue with tilt-up construction. Roofs should be inspected twice a year, and all sealant in the wall joints should be checked.
This happens quite often. When the sealant fails, water can enter the joint, run down behind the roof’s wall base flashing, and get into the roof system. Corrosion of metal deck and fasteners is a common result, as is insulation deterioration.
Sealant failure at tilt-up wall joints due to differential panel movement.
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