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aemeijers aemeijers is offline
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Default Sealant for aluminum panel roof

On 9/28/2011 11:16 AM, JP wrote:
I have been fighting a losing battle with a screen porch roof that is
made of aluminum panels butted against each other. Sealants on the
seams last about a year (18 months if lucky) before leaks start
again. Each time I clean the old sealants off down to bare metal with
a wire brush. I have tried the normal latex, silicon, polyvinyl etc
but they all fail. The roof gets full Florida sun so it is UV
intensive and hot.

Any experts have a recommended product? I have not yet tried an epoxy
based sealant fearing how hard it could be in the future to remove
it. The panels are very tight together (no visible gaps) yet water
pours through in spots in heavy rains. Is there a low-viscosity
product that will get between the panels and then expand?


Post some pictures somewhere with a link back here, and we can give much
better advice. Kinda surprised there isn't a lap joint of some kind up
there to prevent exactly this problem. Most metal roof panels I have
seen, the panels overlap by 1 bump. The interlocking bumps always give
the water a lower spot to run to.

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