floor crack and questions?

[jeep_man]

I put up a 30x40 garage this summer. I poured my slab over the July 4th weekend and power trowled the surface. For the most part everything looks good-there are a few spots that are a little rough from the cream rising to the surface-but I am still happy with it. The slab is 5 inches thick with a six sack mix and reiforced with remesh. I cut my lines in and everything has looked good up until last week. I live in Kansas and we had out first freeze and I noticed a small crack about 1/16 wide for about 6 feet. I realize all concrete cracks and I am not worrried about that.

My question is about floor coverings. I want to use this as a garage/woodshop, so their will be a lot of sawdust on the floor. I would like to be able to sweep it up and not have the fine stuff stick in the roughness of the concrete. I am sure an epoxy floor would solve this. I have checked online and everyone claims that they have the best product and so on....

I will be parking cars in this shop so I need to avoid hot tire pickup. So what do you guys recomend? I checked with the local Sherwin Williams and they want $1400 for a kit large enough to do my shop. Is that about right or is there a better alternactive?

Also will epoxy fill and fix my crack or do i need to do that first? If so any recomended products that will not mess with the epoxy? What about my cut lines, will epoxy fill them or will they be left alone?

Has anyone had any luck with those rubber roll out floor covers/tiles? Once again I need something that I can drive on and roll my toolbox/welder/tablesaw around on.

As always any imput would be great!

 

[SpaceEnvy]

Sounds like a fun project. My take on your questions is as follows:

The majority of the time, hot tire pick-up is a result of poor concrete preparation.

Most epoxies at the right film thickness will resist hot tire pick-up. Most DIY products are lower in solids content/higher in water or solvent content so they shrink when they cure, but they are easier to use if you are not familiar with them.

I would not fill cut lines, it is counter productive to the reason they are cut in the first place, to give the concrete room to move a bit.

Personally, I am not a fan of the roll-out stuff or tiles as they provide a gap fro water to get under and sit.

 

[LegacyIndustrial]

Pre-fill your cracks. If they are thin you can chase them out to put some filler in. Use a gel filler, you can push it in with a spackle knife.

Joints are your call. We recommend the gel product again. It will flex and fill.

We only recommend epoxy under epoxy coatings.