<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=996690293685739&ev=PageView&noscript=1" />

Custom Mosaic on Hardi Backer Board

7,025 Views
I just accepted a commission for a stained glass mosaic that will hang on the outside of a house. I have done many outdoor mosaics on wood in protected areas but this will be fully expose to the elements so I plan on using Hardi Backer board as my substrate but don't know how to #1 cut it or #2 when it is finished how to hang it.
Client is waffling on permanent installation or removable in case of hurricane/ nor'easter, I cannot begin mosaic really without knowing.. I also will need to make it more rigid, can't have flex on a mosaic :) can I use construction adhesive to sandwich two pieces together ? Thanks.

Ask the creator about this project

  • Originals by Rhonda
    Originals by Rhonda Winston Salem, NC
    on Sep 1, 2012

    Kathleen I luv your Iguana! BEAUTIFUL! :)

  • Originals by Rhonda
    Originals by Rhonda Winston Salem, NC
    on Sep 1, 2012

    Kathleen I didn't read before I posted earlier. For Exterior if you want to hang it, I would suggest exterior grade plywood and then use construction adhesive to attach 1/4" Hardi board to the surface and maybe a few short nails. I would then skim a layer of "modified" thin-set over the face of the Hardi. Backing with plywood will make it very sturdy and also make it easy to attach hangers ...I Luv the "OOK" Brand and I know Home Depot sales them. The hangers will be rated for weight. Up to 100 lbs. I believe (I used them in my art gallery for heavy pieces) Also having Both Backers you could build a frame out of tile and adhere with thin-set or you could build one from wood moulding. Any more questions ...LMK!

  • Kathleen M
    Kathleen M Manahawkin, NJ
    on Sep 2, 2012

    @ Originals by Rhonda~ Thanks for the nice comment on my mosaic :) I appreciate your help suggestions too, I decided on Wedi board, had to order it and actually started it today! Love your planters in your profile pic! Kath

  • Originals by Rhonda
    Originals by Rhonda Winston Salem, NC
    on Sep 2, 2012

    OMG! I about suggest WEDI, but Most people don't know what the heck it is! lol! GOOD STUFF! I use it on shower walls and tub surrounds a lot. NO ONE sells it in my area anymore tho :( You still may want to back it with a bit of plywood so you can attach a hanger :) It will certainly reduce the weight of your project tho!

  • Kathleen M
    Kathleen M Manahawkin, NJ
    on Sep 3, 2012

    Rhonda, I ordered two 12x12 panels and two 12x18 panels from a mosaic supply to try out the Wedi. I know that there is a place in Texas that sells it but I have nothing ( Jersey Shore ) around me that has it... big box guys looked at me like I was nuts... one even told me ( respectfully snide ) If a product like that existed M'am I would know. I brought him a sample the other day... what an ass he was! I know mosaic artists who have used it for years with much success but I never had the need for it until now and, I always tried to avoid it because of costs, When I first heard of it it wasn't available in the US but could get it thru Australia and that drove the cost even higher lol. There are special hanging kits available but next time I think I could rig something similar and save $$. As this is my first time using the Wedi I am not passing the procuring costs off on my client, and that is gonna hurt but every lesson learned has a cost :)

Inspired? Will you try this project? Let the author know!