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Why can I get screws to sit flush with the HardieBacker board?

April 26, 2017flush hardiebacker screws Sit

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Why can I get screws to sit flush with the HardieBacker board?

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The screws that you are using do not have the power to rout out the material in order for the screw head to sit flush. Be sure to use the specified screws (1-1/4” No.8-18 by 3/8” HD Hi-Lo S or S-12 for metal studs, ribbed phil wafer head, self drilling, corrosion-resistant screws). If you continue to have difficulties, we recommend switching to 1-1/4” galvanized roofing nails.