Originally Posted by dan239

Shane

You should reconsider a sawcut in a concrete slab. It could invite a crack later on and then you would have other problems. Go behind trim boards if possible. or at the edge of the wood flooring.

Daniel

Originally Posted by Chrisreyn

Hoss, the problem there might be that because the laminate " migrates" up to an 1/8 inch as the temp and humidity change, there would eventually be chafing onthe wiring, causeing a failure orshort.You'd then havetotake the floor up to replacethe wires. If the grooveis run in straight runs and he leaves an access somewhere, you could replace the wiresin it with a fish-tape.
I installedalaminatefloorin our place and the instructions fromteh manufactor talk about the floor migrating and it so they require you to leave 1/4 inch of open space on each side of the floor under the baseboards.

Originally Posted by Hoss

.....It is probably BETTER to cut a groove, but in my opinion it isn't essential.

Originally Posted by berner

If I just had speaker wire to run under the flooring I would do it as you suggested. I've got the sat cable to run as well. It's about 3/16" thick.

I had a garage built last fall. The concrete contractor came back a couple weeks after he poured the slab and sawcut it lengthwise and across. It hasn't cracked yet, although I do keep the garage heated.