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Old 01-06-2018, 04:09 PM   #1
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Resealing Outdoor Mosaic Tile Roof

Hi Everyone,

I was hoping if someone could recommend a good product for a mosaic ceramic tile roof that is leaking into the building. Obviously, the best thing is to treat anything underneath, but this is an extremely detailed and ornate roof that needs to be preserved.

We have tried a lot of different options in the past, but the sun usually degrades it over a few months, and the leaks never really stop. But the sealers help.

Is there a good sealer you guys have used/ can recommend that can stand up to UV degradation and can really stop leaks?

Any help would be greatly appreciated!
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Old 01-06-2018, 04:16 PM   #2
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Where is this project located?

My first step would be to call the fine folks at Laticrete and Mapei to see what solutions they have to offer.

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Old 01-07-2018, 12:42 PM   #3
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thank you paul i will give them a call. the project is in southern california
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Old 01-08-2018, 10:20 AM   #4
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Hi Robert - we'd be happy to help. Give our LATICRETE Tech team a call at Call 1.800.243.4788.
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Old 01-09-2018, 06:19 AM   #5
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its not the tile..its what underneath.. I would waterproof under the tiles and than install the tiles.
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Old 01-09-2018, 07:16 AM   #6
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I agree with Fred-its the install-can you send some pics sounds like an interesting roof. Sealers aren't waterproofing . Their only performance is to temporarily inhibit the intrusion of staining agents.
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Old 01-10-2018, 03:37 PM   #7
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Thanks everyone! I did try and call Laticrete and Mapei, neither one was especially helpful in terms of the products they offer.

I have been exploring a few non-traditional ideas, if anyone has experience with these.

Armor SX5000 - silicon based sealer

UV Resistant Marine Epoxy - Basically what they coat surfboards and boats with

These are not great solutions, but tearing up the tile is not an option.

Here are some pictures of the roof, if you guys have any other ideas, thanks again for the suggestions!

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Old 01-11-2018, 08:05 AM   #8
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Hi Robert.

It's truly a thing a beauty, but as far as I know there is no way to permanently stop the leaking without removing the tile. Whatever was used as waterproofing under the tile has apparently degraded. There's a good chance it's nothing more than asphalt roofing.
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Old 01-11-2018, 09:33 AM   #9
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Without removing the tile and dealing with the waterproofing below I would think the only remedy would be the UV resin and flooding the entire roof with it to create a waterproof membrane that is transparent with the tiles visible thru it. Will take some serious skills and the detailing at transitions, edges, gutters, vents, etc will be difficult.

It is beautiful
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Old 01-12-2018, 02:37 PM   #10
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thanks everyone for the advice. We will attempt to save the roof, and if we find a good solution, will let the community know!
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