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How do I tile to HardieTex™ blue board?

The answer here is simple – do not tile to HardieTex™ blue board or any other version of blue board.

Blue board as a substrate is made for use under render or textured coatings. If blue board is installed as a substrate it is in your best interest to refuse the work as neither Bostik nor the blue board manufacturer will be able to provide support in the case of system failure.