Pro-fit Ledgestone

Old 11-27-02, 07:41 AM
Jake Mitchell
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Smile Pro-fit Ledgestone

I need some advice/comments on installing Pro-fit ledgestone on my fireplace. I installed a backerboard (plywood) over my drywall, hung metal lathe over that. Then i applied Type N Masonry Cement Mix over the entire wall and let sit for 24 hours. My problem is that after the cement cured i applied the same cement mix (Type N) to the back of the ledgestone piece and applied to the wall. Before i could get to the next row, the ledgestone was falling off. Should I be using Versabond mortar or something else?
Old 11-27-02, 06:22 PM
Doug Aleshire's Avatar
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Jake Mitchell,

I think the problem is this, applying a scratch coat of Type N Masonry Cement Mix is not how to install the product. The weight of the product will not hold up on it's own entirely when applying to a scratch coat unless a support system is placed on the bottom row above the firebox. I see no reason to use Versabond initially but now, I wonder.

First, the ledgerstones must be damp for application, this means that you must should have them soaking in water prior to installation and remove them to avoid any standing water, this creates a bond between stone and mortar.

Second, the wire mesh act as a bonding supplement for the mortar to hold to. Granted, you don't need metal mesh but as you have done so already, it does make for a more sound installation. When you apply the stone, the stone back should be buttered only - NOT THE MESH and when the stone is pushed into place, this creates a suction effect to secure the stone in place. When you say it fell down, I am assuming that it is over the firebox or if not you did not have the stones damp for install. This should have a wood frame placed around it to support the horizontal pcs until cured.

I have attached some good links on this product and application - please review;

****** See Page 5 Important

If you have further questions, call the manufacturer for installation details based on your current conditions.

Hope this helps!
Old 12-02-02, 05:11 AM
Jake Mitchell
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Thank you very much Doug.

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