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Posted by on December 9, 2006, 12:53 am
wrote:
>
>I think I read on that Ask the Builder guy site once that concrete mix
>should be used for a chimney cap. Then I think I saw on this NG where folks
>have successfully used mortar mix.
>
>If so, how long has it been withstanding the test of time? I ask because I
>have a half a bag of type-s mix.
>
>I assume when you put it on you slope it slightly away from the flue vs
>flat.
>
>Thanks,
>Al...
Type S mortar is basically concrete without the gravel.
Type N is the stuff that won't work.
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