Bamboo and Exotic Wood Floors - Bamboo over cement based backerboard, nail AND glue??

I have approx 600 sf of 5/8 bamboo flooring from Home Depot. The flooring looks to be a 3 ply, although it was sold as solid. The subfloor is in a 2nd floor condo, 3/4 ply with 5/8 cement based backboard installed on top. The backerboard is required as a sound and fire barrier, installed when the condo was built in 1980. 2" hardwood nails or staples will not penetrate the bakerboard layer, so I was planning on gluing the bamboo, AND stapling it in place. Screwing additional ply on top of the backerboard is not really an option as there are 6 transitions into other rooms that would end up too high. What do you guys think, and can you recommend an adhesive? I am an experienced carpenter and have nailed plenty of hardwood floors, but have never run into this problem or glued down a floor. Thanks!

Glueing is all you need for this. Make sure that you use the correct adhesive, it must be moisture cured urethane. If you get any adhesive smudges on the face of the material, make sure you clean them with the recommended cleaner before they dry.

Good luck

Please post information, where the wood and especially the glue manufacturer, states CBU as a suitable substrate to glue over. CBU can be dusty, and is manufactured for the tile & mortar industry.

Are you laying the CBU into a mortar bed of thinset, as required by the CBU manufacturer?

This is not a good idea. Ask if you can skimcoat the CBU with a product like ARDEX SD-F to meet the substrate requirements of the wood manufacturer??

I have looked at a dozen failures this year alone, with engineered glue directly to CBU. The adhesive(several different glue manufacturers, too) did not bond to it very well.