Crack•Stix® – The ONLY permanent concrete or asphalt crack & joint filler.

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Filling Deep Concrete Joints & Cracks

Don't forget that deep cracks and joints need one extra step of preparation: backfilling! You can use a 'hot' backer rod or sand ... read more for details.
    For concrete joints and cracks deeper than 1/2" we recommend filling that gap with stone dust or sand first -- leaving 1/2"exposed for the product.  You can also us… http://crackstix.com/blog/2015/02/filling-large-concrete-joints/