I have a couple of exterior terracotta disks that I’d like to attach to the outside of my house. How can I go about doing so? They have no real fixing holes on the back as you can see in the picture.
Attach decorative terracotta disk to outside of house
exterior
Related Solutions
In the short term, you could waterproof the foundation with some sealant paint like Drylok.
Longer term, you need to fix the problem by directing water away from the house. Is there cracking where the patio meets the house? That would indicate subsidence at that side of the patio, at which point I would definitely call in the professionals.
The next question is how much of a slope there is, and how much you would need to build up the house side of the patio. A thin layer of concrete is easy to apply; you just need to get it thick enough that it won't flow so much that it levels itself out before setting. Getting it looking good is more difficult, but can be done with care, but again you're balancing time to do that versus the concrete setting as you're working with it. If this is someplace that people will use a lot, so you want it to look good, you might still want to pay someone to do it.
You can fill the holes with Wood Fillter which is available at almost all home stores:
You fill the hole with it, and let it dry. Once dry, sand it flush with the other surface, prime and paint.
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Best Answer
Typically those would be installed in/with mortar or stucco, which would key into the depression in the back.
That or construction adhesive would be the logical approach unless you want them removable and don't mind something like 3 stainless steel nails capturing it around the edge (mark, remove, drive two, place disk, drive the third with care) or 3 L hooks.