05:15AM | 06/16/08
Member Since: 06/14/08
3 lifetime posts
I live in a 1970's vintage ranch house over a crawlspace. I am renovating the master bathroom. The floors were tile over a inch and a half thick motar bed. The subfloor in the shower was rotten and had to be replaced. The rot extended under part of the tile in the room itself. I have removed the motar bed in the entire bathroom. The remaining subfloor is only 1/2" thick and quite bouncy.

My question is: After repairing the rot, can I add a second layer of 1/2 plywood to stiffen up the floor? I intend to tile the floor over cement board.



06:33PM | 06/24/08
Member Since: 07/03/05
283 lifetime posts
I would add a sheet of 3/4" BC or AC grade of plywood (no CDX, it carries only a sheathing rating, not an underlayment rating).

That still may not be all that is needed if the joists are undersized, but I cant imagine they would be if they previously supported a mud bed. You'll have to determine if the joists are adequate. If they are then the 3/4"ly plus a 1/4" cement board should be sufficient.


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

All bookworms need a good bookmark that inspires them to keep reading. To make this colorful bookmark, cut a rectangular p... It turns out that many bath and kitchen cleansers contain chemicals that are dangerous to the skin and eyes, and often pro... So often we paint tiny nooks white to make them appear larger, but opting for a dark, dramatic wall color like this one—Be... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon