Our RV we had as a kid had an aluminum roof on it, and we finally ended up replacing the whole thing. When you put patch panels down, they will always start to leak down the road a ways as the aluminum is constantly flexing. You could always go with a membrane over the whole thing, or a good high quality oil based roll on roof over it, but then you have to get up there every year pretty much and recoat it.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD 
AND THE PINK JEEP!!!! R.I.P.
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