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Original Message "RE: Traditional and Modern lime plasters" Posted by Roger on 05-Jun-05 at 05:14 PM Hello, I am not a contractor, but I have worked with Durock on my own project. I made a small attempt at getting lime/sand to attach to Durock, but it separated much as you describe. Later, I covered a substantial portion of Durock with a thin coat of gauged dolomitic lime (to level an uneven surface). Despite substantial temperature fluctuations, this has adhered well, though it has been up for only several months. Of course, portland cement also adheres very well. In general, whenever I mix modern and old materials, I have problems. I suspect that the poor adhesion is, as you say, due to differences in expansion/contraction for your surfaces. If guaged putty is suitable base, you might also consider that over well-saturated Durock, but I do not know how well lime/marble dust would adhere to that.

Go back     FAQ       Conferences Post form Your Message Name*: Subject*: Message*:   HTML Ok Use [] in place of <> HTML Reference   Images Ok   Click on a smilie to add it to your message.   >Hello, >I am not a contractor, but I have worked with >Durock on my own project. I made a small >attempt at getting lime/sand to attach to >Durock, but it separated much as you describe. >Later, I covered a substantial portion of Durock >with a thin coat of gauged dolomitic lime (to >level an uneven surface). Despite substantial >temperature fluctuations, this has adhered well, >though it has been up for only several months. >Of course, portland cement also adheres very >well. In general, whenever I mix modern and old >materials, I have problems. I suspect that the >poor adhesion is, as you say, due to differences >in expansion/contraction for your surfaces. If >guaged putty is suitable base, you might also >consider that over well-saturated Durock, but I >do not know how well lime/marble dust would >adhere to that. Check if you DO NOT wish to use emotion icons in your message

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