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Joe Jenkins
Senior Member
Username: Joe

Post Number: 188
Registered: 07-2006
Posted on Friday, October 26, 2007 - 01:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

We have worked on a number of slate roofs that have been coated. If the slates were still good when coated, then you have to wait 50 years until the coating wears off to have a decent slate roof again. In the meantime, if the roof leaks, you can't find the leak thanks to the coating.

If the slates were shot and the roof coated, then you no longer have a functional slate roof, you have an asphalt coating roof (or whatever the coating was)with slate underneath it. Again, if it leaks (and it will) good luck finding the source.

In short, coating slate is not a good idea and is usually just a way to throw away money. Save your money for a new slate roof or for proper repairs and/or restoration.
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ron kugel
Intermediate Member
Username: Slateworks

Post Number: 39
Registered: 09-2006
Posted on Wednesday, October 24, 2007 - 04:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Hi Julie, I think you will recieve many negative responses to your question, the only time that slate may need a coating is if it is a soft slate that is at the end of it's useful life and for whatever reason one needs a little more time to replace the roof,then I could see applying a roof coating..but if it is a good slate roof and the nails are rusting away and the slate are slipping either keep replacing the sliding slate or remove the slate ,then reinstall them with copper nails ect..would suggest staying away from roof coatings can only cause problems in the future of a good slate roof.
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Courthouse Square
New member
Username: Courthouse_square

Post Number: 1
Registered: 10-2007
Posted on Wednesday, October 24, 2007 - 03:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Does anyone have information on applying a coating to the slate? Has anyone ever tried this? Thank you, Julie

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