Question about laying Vinyl tiles (12x12)

Recently I laid some tiles (12x12) in my kitchen on a plain concrete surface, these were supposed to be self sticking but of late some of them are beginning to separate from the concrete. Any tips? Did I do something wrong? Should I have put down a mastic before laying the tiles? any comments appreciated. I thought they would stick to the concrete as I had previously laid some in the Bath room on a tiled surface and had no problems.
--
Lee


Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
The tiles I laid in my house on concrete (Home Depot types) called for a concrete sealer which I used, and works great. I have a little trouble with some edges where there has been moisture (autistic 7 year old and kitchen faucet, I'm sure you can imagine) but other that that, no trouble. Perhaps that is it.
Maury Wylie, TX

something
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
My thanks to those that replied, will follow up and hopefully I will be able to correct the problem!
--
Lee

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Some are great - some just plain have a 9.5 suck factor. Some things that could cause the problem are the age of the tiles (although you may have recently purchased them - I've seen some in Lowe's that had a mfg date on the side of the box that was over 1-1/2 years old (strange since Lowe's rotates stock to different locations every 6-8 months if an it doesn't sell.) Another cause could have been dust on your floor prior to installation. I would get a vinyl tile adhesive and re-apply the ones that are coming up. It's quite possible that the entire floor may be done when it's all over.
Jim

something
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.