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What is the maximum end gap allowed between un-supported jamb and substrate?

April 26, 2017allowed gap jamb maximum Substrate un-supported

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What is the maximum end gap allowed between un-supported jamb and substrate?

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The end gap can not be specified as un-limited. The end gap must be limited either as tested or by the sealant (caulking) manufacturer’s joint performance capabilities and recommendations. Design consideration must also be given to weathering, water proofing, fire propagation, material expansion, compatibility, working joints and sealant performance.