Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Concrete, Stone & Masonry

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 08-25-2012, 09:31 AM   #1
Newbie
 
Join Date: Jul 2012
Posts: 17
Share |
Default

mortar adhesion to bluestone - Question


So often when using Pennsylvania bluestone for outside steps the mortar joints in the slabs will often show a crack along the stone line in a few years. This seems to be because the saw cuts are so smooth it is difficult for the mortar to form a good bond with the stone. Another problem is when some mortar cracks it is almost impossible to match the color several years later and it looks like a patch. We are looking at two alternative options. Butting the stones at the joints and using polymeric sand. There is a question here of water intrusion seeping in and freezing but not sure. The second would be to use an adhesive additive like Weldbond in the mortar to provide more bond strength. Would appreciate any suggestions.

JackB is offline   Reply With Quote
Old 08-26-2012, 09:23 AM   #2
Concrete & Masonry
 
Join Date: Nov 2008
Location: Wisconsin
Posts: 2,703
Default

mortar adhesion to bluestone - Question


A few ounces of bonding admixture goes a long ways, and should take care of many of the issues. Getting the edges wet first certainly helps as well, and be sure to compress the joints well to make sure they're as dense as possible. Also, I wouldn't suggest the polymeric sand for a wet-set bluestone application, it will allow too much moisture through........

jomama45 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bond strength of mortar??? figs Building & Construction 7 06-06-2009 03:23 PM
Removing mortar bed Cosmo Brown Flooring 2 04-04-2009 11:54 PM
mortar liquid bonding agent question drewhart Building & Construction 5 11-06-2008 07:45 PM
Basement Renovation Question KUIPORNG Remodeling 234 08-26-2008 08:19 AM
Mortar removal from salvaged brick. Rem8 Building & Construction 8 07-20-2008 07:05 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.