> -----Original Message-----
> From: Edison Coatings
> Sent: Friday, May 04, 2007 12:16 PM
>
>
> The use of portland cement repointing/rebuilding mortar on
> masonry construction originally built with lime or natural
> cement is problematic because:
> 4. If portland mortars require repointing more frequently
> than natural cement mortars, then portland represents a less
> sustainable approach, as every round of repointing induces
> damage and loss of fabric to the original structure.
You might want to comment on why portland requires repointing more
frequently....
Dan
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