Replies

1. 
   andybuildz | Dec 20, 2003 07:08pm | #1

   why ya yelling? That frustrated?

   Screw Wonderboard to it! Be sure to thinset the Wonderboard down first and use a latex additive rather than water.

   Be well

            andy

   My life is my practice!

   http://CLIFFORDRENOVATIONS.COM

   
   

   ---

   Edited 12/20/2003 11:10:41 AM ET by Andy Clifford(Andybuildz)

1. 
   RGENIE | Dec 21, 2003 01:49am | #5

   Andy, Thanks for the insight. Much appreciated.

   Gene

2. 
   RGENIE | Dec 21, 2003 02:02am | #6

   Andy, thanks, your insight is much appreciated.

   Gene

2. 
   Mooney | Dec 20, 2003 07:22pm | #2

   I was in a tile forum a while back and read something like this question . This is a touchy subject. Water penetration even under tile will freeze. Boom ! If the floor members move in freezing weather the latex will not give enough movement to a deflection. I heard this argued big time . I wouldnt put my money out side in wet freezing weather on a joist floor.

   Tim Mooney

3. 
   rez | Dec 20, 2003 08:02pm | #3

   Hiya Gene,

   I see that you're a new poster to breaktime, in fact this is your first post.

   Just want to say welcome and hope you can find some answers that you need.

   On this forum and others it is commonly accepted that typing in capital letters denotes shouting in online communication.

   Happens all the time around here. heh heh

   By tiling an outdoor deck in the northeast I would think you are concerned with freezing also. As Tim alluded to in his response, movement of the different materials will cause you some trouble. That coupled with just a solo 3/4 inch subfloor over joists aren't going to help matters much either.

   But being outside the look of grout cracking probably isn't going to alarm you as much as the possibility of  water entry there.

   There is another forum available that addresses tile data specifically which you might find helpful.  'John Bridge Forum' is the name of that forum and can be found by a web search.

   If my computer skills had grown to the point I'd post the link but I'm not there yet.

   Anyhow, Welcome to Breaktime.

    

    

4. 
   MojoMan | Dec 21, 2003 12:55am | #4

   I've never tried this, so I can't speak from experience, but I don't think I ever will try it, either. My gut agrees with the other posters that this is very risky business in a climate with cold winters. Rigid materials like tile and grout on a porous material like wood, sooner or later, will succumb to the effects of freezing and thawing, wetting and drying. I would consider other decking materials first.

   Al Mollitor, Sharon MA

5. 
   YesMaam27577 | Dec 21, 2003 04:52am | #7

   The northeast is subject to HARD freezes, just like my old home in Ohio. Perhaps you've noticed that none of the brick sidewalks or brick driveways there are mortared. They are all set in sand only.

   That's because of the expansion that happens when stuff freezes. If the bricks had been mortared, then the expansion would not be able to go anywhere, and the bricks would crack and heave.

   Same thing with tile, even though they would not be set in/on the ground. Once you grout them in an outdoor location that freezes, you are doomed to having lots of cracked and broken tiles.

   And the earlier comment concerning unequal expansion is true too. Your treated plywood subfloor is made of wone of the woods that moves the most with temp and humidity changes. The tile will not expand and contract the same, so the thinset will eventually crumble.

   Sorry to bury your idea.

   Vast projects should not be founded on half vast ideas.
6. 
   ClaysWorld | Dec 21, 2003 06:56am | #8

   Hi Gene. There are really 2 questions that your looking to answer. #1 you asked and to focus on that you need to prevent the movement of water past the tile job. I E a water proof membrane. Your basically making a big shower pan. That will prevent the water from going to the wood below. #2 is the durability of a tile job in that environment acceptable? There are technics to get the proper tile and installation to perform, but it would be critical to have a perfect install. And that would entail more cost than the norm. If that were to be what you had in mind then I wouldn't rule it out.

    Clay

7. 
   ANDYSZ2 | Dec 21, 2003 07:06pm | #9

   Gene I have an idea but it will depend on the use underneath the deck.

   If the deck is sloped.

   I would put a rubber membrane down and then build a grid out of a stable material like teak or aluminum or even plastic  and set my tile in the grid.This way you can easily replace broke tiles you can create a drain system and it would look pretty trick.

   This may be a stupid idea but still it could work.

   ANDYSZ2

   I MAY DISAGREE WITH WHAT YOUR SAYING BUT I WILL DEFEND TO THE DEATH YOUR RIGHT TO SAY IT.

8. 
   oops | Dec 21, 2003 11:50pm | #10

   True, I'm not in a deep freeze zone( Dallas/Ft. Worth, Tx) but this is what I've done with good success so far. Joist 16'o.c., beveled 2x (1/4 in 12) fastened to top of joist, 3/4 CDX glued & screwed, 2 ply ice and water shield, 1/2" cenent board screwed, thin-set and grout per my tile contractor.(do not have these spec's)  The tiled porch (8'x47') is covered and has only an east exposure. For what it's worth.

9. 
   steveodiy | Dec 22, 2003 09:14pm | #11

   Make sure you use the right materials.

   There are thinsets, morters and grouts made for this application that are very flexable even during the freeze thaw in the northeast.