#1  
Old 10-14-2011, 09:26 AM
Peasant
 
Join Date: Jun 2011
Location: Ohio
Posts: 40
Default Tile Adhering to Slightly Damp Cinder Block

I am in the process of tiling my oven base. The top tile is done, and I'm working my way from the top down with the side tiles. Unfortunately, no updated photo yet.

We have had an ungodly wet summer. I dry-stacked my blocks, and filled every other core hole with concrete. As the rains have continued, the block has become wet. It appears some of the cores have filled with water (not completely, but to some extent) because there are a few points at the cinder block/base junction that's always wet. Water seeps from the inner block hole to the outside.

In the picture below you can see that the bottom mortar line essentially never dries out.



My question - Can I tile and grout over this lower section while it is in it's present state? Do I need to place a space heater in the wood compartment and try to dry the thing out?

It is now mid-October in North East Ohio. It's getting colder, and wetter. I have been installing my tiling while underneath a tent, and covered the oven with a tarp after I stop working. I see no end to our rain, until it turns to snow.

Any feedback those experienced with cinder block tiling is appreciated. Is outdoor-grade adhesive and grout like concrete, and cures even while in the presence of some damp block?

I'm banking on my water/block phenomena disappearing once the whole thing is tiled and grouted (all the dry-stack crevices will be sealed).

Last edited by Pizza Fermentor; 10-14-2011 at 01:52 PM.
Reply With Quote
  #2  
Old 10-14-2011, 01:08 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,720
Default Re: Tile Adhering to Slightly Damp Cinder Block

It depends on what type of adhesive you use. Is it cement based or acrylic? You should really seal the surface with a tile primer prior to gluing the tiles on.
Reply With Quote
  #3  
Old 10-14-2011, 01:38 PM
brickie in oz's Avatar
Il Pizzaiolo
 
Join Date: Mar 2009
Location: Whittlesea
Posts: 3,455
Default Re: Tile Adhering to Slightly Damp Cinder Block

Quote:
Originally Posted by Pizza Fermentor View Post
I'm banking on my water/block phenomena disappearing once the whole thing is tiled and grouted (all the dry-stack crevices will be sealed).
Work with it and not against it.
Drill some holes in the base and leave them there even through the tiles so if any water does get in it can get out again.
__________________
The English language was invented by people who couldnt spell.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #4  
Old 10-14-2011, 02:01 PM
Peasant
 
Join Date: Jun 2011
Location: Ohio
Posts: 40
Default Re: Tile Adhering to Slightly Damp Cinder Block

Quote:
Originally Posted by david s View Post
It depends on what type of adhesive you use. Is it cement based or acrylic? You should really seal the surface with a tile primer prior to gluing the tiles on.
Primer? Where were you a couple days ago?

It's too late, since a lot of the tile work is already done. I guess I'll know in the spring if it bonded well.
Reply With Quote
  #5  
Old 10-14-2011, 02:09 PM
brickie in oz's Avatar
Il Pizzaiolo
 
Join Date: Mar 2009
Location: Whittlesea
Posts: 3,455
Default Re: Tile Adhering to Slightly Damp Cinder Block

Thats a new one for me, Ive never heard of tile primer?
Mind you Ive only been in the building trade for 40 years....

The tiles should bond ok to the concrete block and render with just tile adhesive.
__________________
The English language was invented by people who couldnt spell.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #6  
Old 10-14-2011, 09:30 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,720
Default Re: Tile Adhering to Slightly Damp Cinder Block

A primer enhances adhesion to a range of substrates prior to tiling. I use a product called Dunlop Primer and additive. It can be also added to tile grout to add some flexibility and to reduce porosity (more waterproof).The reason I started using this product was because a small tile fell off the decorative arch on one of my first ovens. I now use this all the time and haven't had a failure since.

Last edited by david s; 10-14-2011 at 09:34 PM.
Reply With Quote
  #7  
Old 10-14-2011, 09:33 PM
brickie in oz's Avatar
Il Pizzaiolo
 
Join Date: Mar 2009
Location: Whittlesea
Posts: 3,455
Default Re: Tile Adhering to Slightly Damp Cinder Block

Yeah Ive used that Dunlop stuff myself and its nothing short of a gimmick just to boost sales.
It wasnt needed until Dunlop decided it was, just my opinion.
__________________
The English language was invented by people who couldnt spell.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #8  
Old 10-14-2011, 09:43 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,720
Default Re: Tile Adhering to Slightly Damp Cinder Block

Try this link. Davco also recommend a sealer. I believe it does enhance the adhesion, from experience.

http://www.rossettotiles.com.au/surfaceprepguide.pdf
Reply With Quote
  #9  
Old 10-14-2011, 09:46 PM
brickie in oz's Avatar
Il Pizzaiolo
 
Join Date: Mar 2009
Location: Whittlesea
Posts: 3,455
Default Re: Tile Adhering to Slightly Damp Cinder Block

Its still a gimmick.
They have stuck tiles to masonry for thousands of years without any problems and lots of them tiles are still stuck there.

Now, all of a sudden big companies say you need a sealer?
__________________
The English language was invented by people who couldnt spell.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #10  
Old 10-14-2011, 09:48 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,720
Default Re: Tile Adhering to Slightly Damp Cinder Block

Lots have fallen off too.
I believe Bondcrete is also used for the same purpose.

Last edited by david s; 10-14-2011 at 09:56 PM.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Chimney block question dmun Design Styles, Chimneys and Finish 3 08-11-2007 05:17 PM
Cinder Block Stand, Mortar or No Mortar? stevest Getting Started 1 02-26-2007 06:13 PM


All times are GMT -7. The time now is 04:55 AM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC