Bonding aluminium to concrete is essential for many home repair projects. The different chemical make-up in both materials makes it difficult to bond one to the other without an appropriate adhesive. Failing to use the right glue can result in the melting or freezing of the adhesive -- due to expanding or shrinking of aluminium, for example -- and detaching of the bond. The trick to securing a successful bond is finding an adhesive that works with both aluminium metal and concrete brick.
- Skill level:
- Moderately Easy
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Things you need
- Rubber gloves
- Dust mask
- Safety glasses
- Measuring tape
- Soy-gel paint stripper
- Paint scraper
- Liquid Nails
- C-clamps or vices
Strip any paint off of the concrete. Brush the concrete surface with a thick layer of soy-gel paint stripper. Layer the gel up to 1/8 inch thick. Allow the gel to dry and harden for up to 12 hours. Remove the gel off with a paint scraper.
Apply a thick layer of Liquid Nails Metal Projects Repair Adhesive (LN-203) to the surface of the aluminium and concrete. Firmly press the aluminium into place on the concrete. Follow the Liquid Nails label instructions for details on application.
Clamp the bond together with C-clamps or a vice for up to 24 hours.
Tips and warnings
- Wear rubber gloves, work glasses and a dust mask for safety.
- Soy-gel is an environmentally safe way to remove paint from concrete.
- Removing paint from concrete is essential for a sturdy bond.
- Liquid Nails (203) is made especially for bonding metal and masonry.
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