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Whether you work on or with concrete surfaces, it’s a good idea to know some tricks for removing glue from concrete. This guide will tell you how to get glue off concrete surfaces before and after it cures.
The size of the rocks and their surrounding conditions are key factors you need to consider when choosing the right adhesive for gluing rocks together.
Your adhesive must be suitable both for large rocks and the environmental conditions they will be subjected to. Construction adhesives like Loctite PL 500 Landscape Block Adhesive are good choices. This product is formulated specifically for outdoor landscaping projects and is particularly adept at bonding irregular surfaces and filling gaps between them.
You can also use epoxy resin to bond large rocks, especially if they don’t fit snugly. Epoxy putties let you (re)position your stones for a while after application; however, unlike epoxy resins, they remain visible after curing.
If you are gluing small rocks together for plant arrangements, super glue and jewelry adhesive are good options. Epoxy resins and construction adhesives are appropriate for gluing larger rocks (see above).
Since your plants will be outside and/or get watered, you must ensure your glue is waterproof, like Loctite Super Glue Ultra Liquid Control. It is resistant to moisture and suitable for outdoor craft projects. However, superglue is not suitable for permanent contact with water. Occasional contact in a sheltered outdoor area is fine.
Your best choice for gluing aquarium rocks together is an aquascaping glue. These adhesives are specially formulated for marine conditions, and many of them are cyanoacrylates, or super glues.
If you need to bridge larger gaps when aquascaping with super glue, mix some large-grain sand with the glue to give it volume or insert a smaller rock in the gap to help fill the space.
The process of gluing rocks together is essentially the same for all three projects. Work in a well-ventilated area when following the steps below.
