Attaching stone veneer - odd application


Old 07-17-11, 08:20 PM
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Attaching stone veneer - odd application

I've got an unusual application for stone veneer. Iím big into Halloween and I have a fake fence that I put up around my yard for the majority of the month in October. (PVC pipes to simulate wrought ironÖ and plywood cubes to simulate stone pillars)
Try as I might, Iíve not been able to get the plywood pillars to seal very well and the paint peels, the wood swells etc. So Iíve decided to try and clad the pillars with stone veneer. Iíll be making my own with veneer molds and some type of lightweight mix. The pillars are hollow, 2x2 frames and 7/16 plywood. I have a few questions:

1) Whatís the best way to adhere the veneer to the pillars? Do I need a moisture barrier like 15lb. roofing felt since they are hollow? They sit ĺ the way on the grass in all kinds of weather. Colorado in OctÖ it can be 80 and dry, rain, or 2 ft of snow. When I put the stones on I plan on leaving some type of vent hole up high, so that should help vent the interior so thereís less condensation/humidity.

2) If I do need a moisture barrier, Iím assuming some type of lathe attached to it so I can use thin-set and adhere the stones?

3) Can I use mastic to adhere the stones? Iíve seen posts against this, but I have the luxury of laying the pillars down on their sides and not have to worry about gravity pulling them down before they set up. Additionally, Iím also under the understanding that mastic can flex a little bit. This may actually be an advantage in my situation since they are portable and get moved around.

4) If mastic will work, do I need the moisture barrier? Lathe?

Thanks for your thoughts
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Old 07-20-11, 04:13 PM
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Anyone? Buller? Buller?
Old 07-20-11, 04:44 PM
Tolyn Ironhand's Avatar
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Do you have a Menard's by you? The reason I ask is they carry some vinyl stone panels that might be a good option for you. Other big box may carry them to but I'm not sure.

Examples: Accents at Menards

Seams to me that making your own stone veneer would be time consuming, quite costly and very heavy in the end.

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