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What is the best way to hide the nail holes in Textured Hardi siding prior the painting? I have been using latex caulking after primeing the siding. It works well, however it is labor intensive if you want complete disappearance. We are applying the caulk either directly to the hole from the tube and then smoothing with a finger or applying the caulk to a finger and placing in the nail hole. Either way, it is slow and care must be taken not to leave a devit. I have tried a putty knife but it leaves to much residue. Thank you.