View Single Post
Unread 06-05-2014, 05:55 PM   #22
jadnashua
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

 
Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,914
Having your planks on the diagonal means that they are spanning further than if they were perpendicular, so while 1/2" is generally the minimum for when they are perpendicular, a 5/8" subfloor is strong enough to support tile, and is the minimum I'd want to consider underneath my tile over them. 3/4" is also fine, but the difference may not be warranted, but it would reduce the between joist deflection, but with the planks and the 5/8", you're already above the minimum. Your call, your money. People have indicated that finding a decent sheet of 1/2" is harder than when it is thicker (the thinner stuff tends to be warped, and both cutting it to size and then screwing it down can be a pain).
__________________
Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
jadnashua is online now   Reply With Quote