How to glue granite tile to concrete
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When installing granite tile on concrete surfaces, the correct adhesive (glue) must be used, as well as ensuring the concrete is adequately prepared before the installation of the granite tiles, and proper procedures are followed when installing the tiles. If performed correctly, the bond created between concrete and granite should last for years, if not decades. In this article, we will outline how to install granite tiles to concrete surfaces professionally, step by step.
The First Step Is Choosing The Right Adhesive (MOST IMPORTANT!)
When professionals bond granite tiles to concrete they primarily use:
– THE BEST PRODUCTS
– 2-Parts Epoxy Adhesive (Strongest; Will Create a Structural Bond)
– Polymer Modified Thin-set Mortar (Best Product For Installing Tiles)
– Polyurethane or MS Polymer Construction Adhesive (Flexible & Great For Exterior Applications)
The Best Adhesive To Use For Bonding Granite To Concrete Is A 2-Parts Epoxy Adhesive, This Is Also The Strongest & Most Durable Adhesive That You Can Use For Bonding Granite To The Concrete. Polymer Modified Thin-set Mortars & Stone Adhesives Are Both Commonly Used For Bonding Granite Tiles For Installing On Walls & Floors.
Step Two – Prepare The Concrete Surface Properly
Preparation Of The Concrete Surface For Bonding Will Be More Important Than The Glue For Establishing A Good Bond.First of all, make sure to completely clean the surface, including all dust, grease, paint, and/or debris. Secondly, ensure that the concrete has finished curing because if there is moisture present it will cause a weak bond between your tile and the underlying surface. Thirdly, you should scar the surface to create a mechanical grip on the surface of your tile. The easiest way to scar is by using either a grinder or wire brush. Once this is complete, you will then repair any cracks or pores by patching them with a specific compound, which needs to be allowed to cure prior to installation. After your surfaces have been properly scarred and patched; you should clean off any remaining dust using a vacuum cleaner and/or clean rags and make sure that your cement is not slick or dirty in order for them to create a strong bond.
Preparing the Granite Tile
Clean the back of your tile as required and make sure that they’re completely dry and free from oils or other contaminants prior to installation. In addition, if the tile has been polished you may want to lightly scuff the back of them prior to application!
Applying the Adhesive to the Concrete Surface
Prepare your adhesive according to the manufacturer’s instructions (this will vary based on if you are using epoxy or thinset.)
When applying adhesive you will be using a standard size notched trowel (1/4”-3/8” depending upon the usage).
When applying adhesive you should be very careful to evenly distribute the glue over the entire concrete substrate ensuring that you perform this Step 3 correctly will enable a secure bond between the tile and concrete substrate.- Back-buttering your granite tiles before placement is recommended. Back-buttering your granite tiles prior to placement on the adhesive applied to concrete will help create an even distribution of adhesive and help to prevent voids and possible future cracking.
– Properly positioning your granite tile onto the adhesive applied to the concrete requires you to place the granite tile onto the adhesive and engage in downward pressure (push down), and gently slide back and forth to allow for any air pockets to escape from beneath the tile.
– Spacers will allow for uniform grout spacing at the edges of the granite tiles and a rubber mallet may be used if necessary to push the tiles down into the adhesive.
– Do not walk on the granite tiles or place any loads on the tiles until the adhesive has had a sufficient amount of time to cure.
– When grouting and sealing granite tiles:
o The use of flexible grout between the joints of the granite tiles is highly recommended.
o After waiting for the full curing time for the adhesive:
– Apply a stone sealer over the granite tiles to protect them from moisture/staining.
– Use epoxy adhesive when installing granite tiles in places that are heavy traffic or outdoor applications.
– For light-coloured granite, a white adhesive should be used to avoid the adhesive discolouring due to the light colour of the granite.
– To avoid voids in the applied adhesive, make sure you have full coverage of adhesive on the tile.
– Use weatherproof adhesive when installing granite tile in an exterior application.
– To prevent the glue from curing too quickly, only install small sections of granite tile at a time.
– Common mistakes when installing granite tile:
o Did not prepare the surface correctly prior to installing granite tile
o Adhesive applied too thin or uneven
o Attempted to install granite tile on wet concrete
o Did not allow sufficient time for adhesive to cure properly
o Used the wrong type of adhesive (regular tile adhesive vs. adhesive made specifically for granite tile).
– To successfully adhere your granite tile to your concrete surface, be sure to:
o Use epoxy or polymer modified adhesive
o Clean the surfaces being installed (free of grease, dust, rough and dry)
o Use a notched trowel when applying adhesive to the concrete surface
o Allow sufficient time for the adhesive to cure.
When the above procedures and recommendations are correctly adhered to, the resulting adhesion of the granite tiles will provide a strong and long-lasting bond for all types of granite tile applications (both indoors and outdoors).
