Coconut Grove's waterfront blocks along Bayshore Drive and the older streets fronting Biscayne Bay carry the highest salt-air exposure in our service area. Aluminum is the metal of choice here precisely because the self-healing oxide layer reforms whenever the surface is abraded, which means small dings from windblown debris or palm-frond contact do not progress into corrosion the way they would on galvanized or painted steel. We specify 0.032 inch or 0.040 inch panel gauge for waterfront installations rather than the lighter gauges sometimes used farther inland, which improves dent resistance during the install sequence and over the long service life.
The install sequence on a waterfront Coconut Grove home typically runs five to seven days for a straightforward gable or hip roof, longer for complex geometries with multiple valleys or skylights. Day one covers tear-off and deck inspection. Salt air and the tree canopy together create elevated decay risk on older roof decks, so we replace any soft sheathing before proceeding rather than spanning over compromised plywood with the new aluminum field. Day two installs synthetic high-temperature underlayment and self-adhered ice-and-water shield at eaves, valleys, and penetrations. Days three through five handle field panel installation working from rake to ridge, with each panel running ridge-to-eave in one continuous piece to eliminate horizontal seams.
Drip-edge and concealed-clip details receive specific attention on waterfront installs. We use aluminum drip edge fabricated from the same panel stock as the field rather than mill-finish galvanized, which prevents the galvanic corrosion that develops where dissimilar metals meet. Concealed clips are spaced on 12 to 24 inch centers per the manufacturer's NOA wind-uplift schedule, with closer spacing in the perimeter and corner zones where uplift pressures are 1.5 to 2 times the field zone pressure. Final inspection verifies seam engagement, clip count against the engineered fastener schedule, and flashing integration at every penetration before the project closes. Istueta backs every aluminum install with a workmanship warranty of up to 12 years in addition to the manufacturer's 30 to 40 year coating warranty on Kynar 500 or PVDF finishes.
For more information about aluminum roofing, see our aluminum roofing guide.