Rugs, Carpets and Carpeting - glue for tack stripes not drying

Friday the carpet guy came and for some reason was having a hard time nailing the tack stripes down to concrete, so he glued them down. It's now Sunday evening and some of the glue is still not dry. He's supposed to come tommorow and finish the job. I'm worried the glue is not going to dry and he is just going to intall it anyway. If it is not dry, I should tell him to not install it right?

Friday and Sat. I had a dehumidifer going all day to try to get the glue to dry. That wasn't working so today I opened all the doors and windows to try to air it dry.

I'm not sure what else to try. Any suggestions?

BTW, I wasn't there when the carpet guy was there, so some specifics like glue type etc I don't know. It's weird, some of the glue is completely dry, and some of it is not. The glue by the door is dry, so I'm guessing it dried while he was there and the door was open.

This is on the lower level of a split level ranch.

Take a look at the tack strip. Are the nails still in and, if so, does it look as if he pounded them in some after he put the glue down? He should have in order to keep the strip from floating on the glue. It won't get a good bond if it's floating. Look at the edge of the strip, where it meets the floor. Are there large gaps between the concrete and the bottom of the strip? This is an indicator the nails were not used to hold the strip into the glue until it set up. A thin even layer of glue will be several times stronger than an uncompressed bead of glue. Also, is there any paint residue on the area of the floor he glued to? If so, the stretch won't last long. The adhesive will react chemically with the paint, release it from the floor, and you'll be solidly glued to a thin layer of paint. Is there a scrap pile somewhere he was using for trash or did he leave his tools there? If so, look for empty glue tubes or a large caulk gun with a glue tube in it still. Try to determine what kind of glue he was using. I use PL400, as do most of the installers I know. It's the only construction adhesive I've found with the lateral strength to hold under the demands of stretching. There are also glues available from well stocked flooring stores designed for this job that work very well, but I don't know anyone who actually uses them due to the price. Lastly, bare in mind, you don't judge fall apples in the spring. Let him finish the job if you don't find any glaring issues. If the job is unsatisfactory, you have the power of the purse on your side as a tool to insure a lasting job.

He didn't use any nails with the glue. He just glued, no nails. When I got home after work half of the stripes were bowing up, so I had to find a way to weigh them down so the wood strip was against the concrete. I ended up running some tapcons in the strip and concrete to temporarily hold the strip down until it the glue dried. Then I would remove the tapcons. Well almost three days later, and it is still not dry. I can still move the strips with my hand. The strips where the glue dried are rock solid. Should I refuse to let him install this rug tomorrow if he "thinks" it's ok?

He left no tools or garbage so I can see what glue he used.

If the strip is still loose tomorrow and he has any brains at all, he won't try to install, he'll figure out how to remedy the problem first. No nails, brains may be optional. You don't do this for a living and you knew what the problem was. You may be in trouble.