COMMUNITY FORUM

Tom Smeal

02:49AM | 03/18/04
Member Since: 02/02/04
13 lifetime posts
Bvflooring
I just installed 1/2" wonderboard over our 5'X 5' bathroom floor (excluding bath/shower). Is it advisable to install 15lb roofing paper on top of the wonderboard before installing the new 12"X12" ceramic floor tiles?

I plan to seal the grout of course, but I just want the extra protection while I have the opportunity.

Thanks for any advice.

Tom


floorguyforyears

05:34PM | 03/18/04
Member Since: 03/15/04
28 lifetime posts
Don't think I've ever heard that suggestion, and don't know why you would think you need it. The backerboard is resistant to moisture. It will not deteriorate even when submerged. You're also going to have a layer of thinset that is basically a solid bed of cement over it, and then tile. If you're really concerned that moisture could soak into the plywood thru all that, and for your peace of mind, I would suggest you use a product like RedGuard. It's available at H.*me D.ep*t and is a roll-on waterproofing and anti-fracture membrane for ceramic tile.

Tom Smeal

03:42AM | 03/19/04
Member Since: 02/02/04
13 lifetime posts
The roofing felt idea came from a tile book I bought. It was suggested, along with the Red Guard option you mentioned.

Thanks for the advice.

tom


zanger

08:31AM | 07/06/07
Member Since: 07/05/07
1 lifetime posts
i've heard that i should not use both roofing felt behind my backerboard and Red Guard on top. Something about mold development. Could you weigh in on this? I am working on a the walls surrounding an existing tub. Thought this would be the best way to ensure a waterproof wall.

Tileguybob

07:39PM | 07/06/07
Member Since: 07/03/05
283 lifetime posts
By doing what you talked about you are encapsulating the cement board with no ability for it to breathe and exhaust any moisture buildup that might occur. There is still air between the cement board and the roffing paper. Condensation could occur when one side of the board gets warm while the other side stays cold. Cement boards do not promote the growth of mold as they are not a food source like a gypsum board would be. But other contaminents on the board or in contact with it could create an issue.

If you are doing a steam shower the paint on waterproofing should cover the cement board as you dont want steam vapors to collect behind the board. A regular tub/shower is usuually waterproffed from behind the board. Actually waterproofing is a misnomer because once a nail punctures the roofing paper or plastic sheet it is no longer waterproof. At that point we consider them to be moisture retardent.
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

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

Reply_choose_button

captcha
type the code from the image

Anonymous

Post_new_button or Login_button
Register

Handscraped finishes join the rustic, old-world feel of antique flooring with the durability and simplified installation b... Reused steel windows create an eye-catching splashguard in this walk-in shower. The vintage factory windows bring an inter... A galvanized steel tub is a surprising but charming fixture in this bright and breezy screened patio. It's perfect for was... 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... If you lack plumbing skills but have a good sturdy tree, here's the easiest outdoor shower solution of all: Simply attach... 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... How do you like this smart use for an old bottle? Clamp an empty wine bottle to a fence or wall near your outdoor deck or ... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... 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... Repurpose birthday hats to create a string of lanterns for your porch, patio, or garden. Cut the tip of the cone, punch h... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp1