Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Concrete, Stone & Masonry

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-29-2012, 01:39 PM   #1
Newbie
 
Join Date: Nov 2012
Posts: 4
Rewards Points: 0
Share |
Default

Granite slab installation


Can I use thinset to lay a granite slab to hardiboard for a fireplace hearth ? need to level it off bec there is a 1/8" gap
between the hardiboard and the bamboo floor. The hadiboard is going to be liquidnailed to the concrete slab. Its Uba Tuba dark granite if that matters

Thanks

Surfrunner is offline   Reply With Quote
Old 11-29-2012, 01:43 PM   #2
Member
 
Join Date: Mar 2006
Location: Austin, TX
Posts: 1,237
Rewards Points: 0
Default

Granite slab installation


Yes, that is what it is for.

__________________
Advice is free, Lessons begin at 75 bucks an hour.
Tscarborough is offline   Reply With Quote
Old 11-29-2012, 03:17 PM   #3
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,191
Rewards Points: 0
Default

Granite slab installation


who sez you need hardibacker - how thick is the slab ? when i did ours, i just laid it in a floor cutout,,, it was 4" thick & too heavy to bring down the stairs safely by myself so i cut it into 4pcs,,, IF yours is only 1" - 1.5", thinset will work fine IF you level the slabette
stadry is offline   Reply With Quote
Old 11-29-2012, 06:34 PM   #4
Newbie
 
Join Date: Nov 2012
Posts: 4
Rewards Points: 0
Default

Granite slab installation


Ok folks thanks for the replies !!
Let me explain further.. I had an old slate hearth appx 48" x 19".
and we had bamboo floors installed around it.

Fast forward to now. I removed the old slate and I picked up a granite slab 60x 20 which is going over the old opening (hole) which is 48 x 19" x appx 3/8- 1/2"deep and the floor is not level and the granite slab is going to overlap a few inches on each side and sit on the bamboo. SO you are telling me forget the backer board and just use thin set to level the floor and set the granite. correct ?

Thanks again!
Surfrunner is offline   Reply With Quote
Old 11-29-2012, 06:36 PM   #5
Newbie
 
Join Date: Nov 2012
Posts: 4
Rewards Points: 0
Default

Granite slab installation


Oops forget the granite is 3/4" thick.
Surfrunner is offline   Reply With Quote
Old 11-29-2012, 07:37 PM   #6
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,623
Rewards Points: 0
Default

Granite slab installation


Not a great plan----the granite needs a masonry base---no wood under it at all----wood moves--expands and contracts==

I suggest that you cut out the bamboo that is going to be under the slab so the base can be built up without worry ----
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
Old 11-29-2012, 07:38 PM   #7
Member
 
Join Date: Mar 2006
Location: Austin, TX
Posts: 1,237
Rewards Points: 0
Default

Granite slab installation


3/8-1/2 is too much for thinset, use the backer.
__________________
Advice is free, Lessons begin at 75 bucks an hour.
Tscarborough is offline   Reply With Quote
Old 11-30-2012, 04:49 AM   #8
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,191
Rewards Points: 0
Default

Granite slab installation


having enough information is a help when advising methods/mtls
stadry is offline   Reply With Quote
The Following User Says Thank You to stadry For This Useful Post:
oh'mike (11-30-2012)
Old 12-01-2012, 05:54 AM   #9
Newbie
 
Join Date: Nov 2012
Posts: 4
Rewards Points: 0
Default

Granite slab installation


Thanks again for the replies, much appreciated !!
Surfrunner is offline   Reply With Quote
Old 12-01-2012, 06:41 AM   #10
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,191
Rewards Points: 0
Default

Granite slab installation


that piece weighs approx 1,160# making this task more than slightly difficult/involved,,, i think IF i'd wanted to tackle it, i'd have laid the piece directly on the conc floor using 1/8" spacers every 8" o/c both directions AFTER being certain the floor was level,,, then i'd have placed dabs of silicone sealant ( you might call it caulk ) in between the spacers,,, we would've used teflon as that's what we had on the truck when installing cemetery monuments,,, before teflon came on the scent, we used pennies ( fairly uniform in height ),,, i'd also not be surprised to find the piece cracks eventually as granite has slight flexibility - about the same as glass ( float or tempered ),,, hope for the best & don't skimp !

stadry is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Granite Tile Discoloration during installation russ2008 Flooring 16 03-27-2013 01:01 AM
Extending Patio Slab and adding a cover Jeoroc24 Building & Construction 5 04-12-2011 11:16 AM
Do you have a Wood/Pellet Stove Insert with a Raised GRANITE Hearth? gmoom Remodeling 1 01-24-2011 04:54 PM
raised slab foundation tclark Building & Construction 6 01-07-2011 08:10 AM
Granite not installed correctly???? debsc Kitchen & Bath Remodeling 7 02-01-2009 08:58 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.