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manufactured by ThoRoc (ChemRex), Multi Purpose Non-Shrink Grout as manufactured <br /> by US Mix,or Sikagrout 212 as manufactured by Sika. <br /> K. Pourable Sealer:Two part pourable polyurethane sealant conforming to ASTM D 429,and <br /> designed to seal around penetrations. <br /> PART 3 EXECUTION <br /> 3.01 EXAMINATION <br /> A. Coordinate with other work for correct sequencing of items which make up the entire <br /> system. <br /> B. Ensure substrates are installed, secured and modified to accommodate sheet metal <br /> flashings. <br /> C. Deficiencies associated with the sheet metal substrates shall be reported to Engineer before <br /> beginning sheet metal work. All such deficiencies shall be corrected before installing sheet <br /> metal flashings. <br /> 3.02 INSTALLATION <br /> A. General: <br /> 1. All joints to be locked and sealed or soldered. <br /> 2. Provide for thermal movement (expansion and contraction) of all exposed sheet <br /> metal. <br /> 3. Where dissimilar metals contact, galvanic action shall be prevented by means of <br /> heavy coat of asphalt paint. <br /> 4. All metal flanges shall be installed on top of membrane and adhered as indicated <br /> in detail drawings. Metal flanges connected to the roof shall be installed per <br /> membrane manufacturer's specifications and the requirements herein. <br /> 5. Various sheet metal sections shall be uniform with corners, joints and angles <br /> mitered,sealed and secured. <br /> 6. Exposed edges shall be returned(hemmed);both for strength and appearance,and <br /> sheet metal shall be fitted closely and neatly. <br /> 7. Provide cleats or stiffeners and other reinforcements to make all sections rigid and <br /> substantial. <br /> 8. Sheet metal shall be fabricated,supported, cleated, fastened and joined to prevent <br /> warping,"oil canning",and buckling. <br /> 9. All sheet metal details shall provide for redundancy including but not limited to <br /> sheet metal underlayment and/or sealants. This secondary protection shall be <br /> installed, sealed and lapped to ensure a redundant layer of protection will shed <br /> moisture infiltration in the sheet metal fails. <br /> B. Sheet Metal Underlayment: <br /> 1. Fully adhere to substrates where indicated in Contract Drawings. <br /> 2. Lap adjoining sections a minimum of 3" and fully adhere. <br /> 3. Shall extend beyond wood blocking a minimum of 1" at roof edges and parapet <br /> walls. <br /> 4. At roof edges and parapet walls, sheet metal underlayment shall be installed <br /> concurrently with roof membrane and flashing installation. Temporary weather <br /> Sebastian Corners Roof Replacement 07 62 00-5 Sheet Metal Flashing and Trim <br />