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#1
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Sealant for aluminum panel roof
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? |
#2
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Sealant for aluminum panel roof
On 9/28/2011 10:16 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? This is the best I've found. Still holding in one spot after five years. http://www.sashco.com/hi/lexel.html LdB |
#3
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Sealant for aluminum panel roof
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? Have you thought about applying a strip of aluminum over the seams? I'm thinking 2-3" wide, bedded in a good caulk (urethane?) and fastened with sheet metal screws with a gasket. Like "board and batten". Being under the batten and thus protected from UV, the bedding material should stay good. I've never tried this, just a thought. BTW, I wouldn't use epoxy. -- dadiOH ____________________________ dadiOH's dandies v3.06... ....a help file of info about MP3s, recording from LP/cassette and tips & tricks on this and that. Get it at http://mysite.verizon.net/xico |
#4
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Sealant for aluminum panel roof
On Wed, 28 Sep 2011 08:16:18 -0700 (PDT), 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. Look into Butyl rubber caulk (or possibly urethane). "Butyl Rubber® Caulk is a high performance product that is ideal for sealing exterior gutters, corrugated roofing, pipes, aluminum and vinyl siding, lap joints, flashing, roof vents and drain spouts. Provides an insulated, watertight seal for areas exposed to the elements. For use on: aluminum/metal, plastics, rubber, concrete, wood, vinyl, mortar and stone" http://www.wlcaulk.com/products/rubber_caulks/butyl_rubber_caulk/index.html -- GO Gators! |
#5
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Sealant for aluminum panel roof
On Sep 28, 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? There are rolls of pressure sensitive tape (similar to roofing membrane) with an aluminum/mylar show surface. Available in 5", 8" widths as I recall. I used it for just what you describe. |
#6
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Sealant for aluminum panel roof
On Sep 28, 10:16*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? Just wire brushing wont remove everything that can contaminate it and ruin a bond, a strong solvent is needed like alcohol or laquer thinner, Silicones have expiration dates, Ive had silicones not get hard or not bind from using old stuff sitting on store shelves to long. I would think a good fresh silicone would work,also temperature of the roof and humidity will affect a bond. |
#7
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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. -- aem sends... |
#8
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Sealant for aluminum panel roof
On Sep 28, 10:16*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? how about some sort of membrane over the entire roof? |
#9
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Sealant for aluminum panel roof
replying to JP, hsif wrote:
henry 885 -- for full context, visit https://www.homeownershub.com/mainte...of-664481-.htm |
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