Comments on: Should durarock be installed under granite for my outdoor grill area?

By: colin f

colin f — Thu, 18 Mar 2010 07:05:59 +0000

Should not need durarock in your application. I would recommend using 3/4 CDX plywood under neath to give support to the granite. As suggested in other answers, the sides and ends should be sealed in a manner the prevent water getting in and causing rot. I would not recommend the use of treated plywood because the chemicals in it may not allow the glue used for adhering the hold for long.

If this is a natural looking table, you could tun a trim board of cedar to hide the edges of the plywood.

Hope this helped with your question. Good luck with your project
References :
Almost 25 years in construction – commercial and residential

By: Fly Low

Fly Low — Thu, 18 Mar 2010 06:20:59 +0000

ideally yes for a long life, you could also use hardy panel I think they are both around the same price
References :

By: KLTileMurals.com

KLTileMurals.com — Thu, 18 Mar 2010 05:37:59 +0000

I would use Hardibacker. Probably the best for wet environment gives good adhesion and thinner than durarock. That is what we use for installing creamic tile murals for outdoor kitchens.
References :

By: John S

John S — Thu, 18 Mar 2010 04:47:59 +0000

Do not install durarock under a solid granite countertop. If the granite is 3cm or 1-1/4" thick granite then underlayment will not be required however if the granite is 2cm or 3/4" thick you will need to a underlayment. I suggest either 3/4" plywood or MDF. I would also prime and paint all sides of the underlayment to prevent rotting. Hope this helps.
References :
Custom home builder 25+ yrs