How to glue Hebel block to concrete slab?

[reno-abc]

I have some left-over Tiler's rubber modified tile adhesive. I was wondering if I can use it to glue hebel block to concrete slab. It's in outdoor area under eaves but may get wet. Thanks

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[MitchellMc]

Welcome to the Bunnings Workshop community @reno-abc. It's sensational to have you join us, and many thanks for your question about glueing Hebel blocks.

Using Tiler's rubber-modified tile adhesive for this application isn't recommended. While it might bond the Hebel block to the concrete slab initially, it isn't designed for this purpose

For a proper and long-lasting bond, you should use Dunlop 15kg AAC Block Adhesive. This is an off-white, cement-based adhesive specifically formulated for bonding lightweight Autoclaved Aerated Concrete (AAC) blocks and panels, like Hebel.

If you're working on a single course high or non-structural application, your adhesive might work temporarily, but for best results, the Dunlop AAC Block Adhesive is the correct product to ensure a durable and weather-resistant bond.

Please let me know if you have any questions.

Mitchell
 

[reno-abc]

Thanks, Mitchel.

Do you know any other alternative products? Mortar used for shower base screed? (I have some left-over).  I need only small amount for 2 Hebel blocks glued to the concrete slab,  15kg is too much for the job. Cheers.

[MitchellMc]

Hi @reno-abc,

If it's a non-structural application and you need to bed the blocks, you could use any mortar-based product. However, since they are not specifically designed for glueing down AAC, any sideways impacts could dislodge them from the concrete. 

Another option would be to use Liquid Nails Landscape.

Mitchell