On Feb 17, 12:54*pm, Davej wrote:
I've installed some self-stick vinyl tiles recently and have had
trouble with the tiles near the edge of the room shifting around and
creating gaps. Is this a common problem? What is the best way to lock
them down? Thanks.

Your substrate is faulty. The tile adhesive is made to stick to a
smooth impervious surface, so somehow you don't have that. Old waxed
linoleum is an example of surfaces that don't work well. Some
installers will go over exiting problem floors with luan plywood
before the tile goes down. My personal preference for my own palace is
decent plywood, sanded and coated with the cheapest polyurethane on
the box store shelf. Imperfections leveled with Bondo and sanded
again. Did a laundry room this way with Armstrong's best S.A. tiles a
decade ago and it still looks new. Cheap tiles will have lesser
quality adhesive, and also (based on my experience) there is tile
shrinkage over the years with noticeable gaps between the tiles. This
shrinkage is more pronounced in one direction than another, so the
manufacturing process must produce a little 'grain' for it to happen.
To solve your problem, talk the folks at a real tile store and they
may be able to find you an adhesive compatible with your present tile
that could keep it in place until its time for replacement. Good luck.

Joe