Anyone ever fill cracks on there garage floor? Iam in my final stages of finishing up my garage. Just need to fill the cracks on the floor from the house settling over the years. The cracks are about 1/2 inch wide. I was plannoing on using concrete patch with a adhesion promoter a mily substance. Wanted to know how the patches were holding up overtime when expoy floor is put over it.

We bought our house last august and I did the floor shortly thereafter. The house and therefore garage floor was built in '61 so there were some decent cracks. I bought tubs of the concrete resurfacer stuff and patched over the cracks and pitted areas of the floor before I epoxied. It has held up just fine and there are no signs of any new cracking.

Preparation of the floor is very important on older surfaces. I started out with sweeping and then hosing it out. I followed that with a good TSP and intense brushing. After that I used muriatic acid to etch and prep for the epoxy. It worked great but took a week to do everything properly including drying time.

Good Luck!!!

I used some concrete floor patch from Home Depot. Use a calking gun. works really well.

3M has a product called Concrete Repair that I think is amazing. It is a 2 part polyeurethane product and it sets up in 1 minute. I got it through Grainger if you can find it I would recommend it. It is very hard but also flexible at the same time to resist separation.

i work in concrete and there is this stuff we use to patch cracks and chips it is a powder and you just mix in water and there you go just have to make sure you get the place to be repaired super clean. i can't remeber what it is i'll ask next time i get a chance

Is that the one that u use the milky like substance.

if you put too much water in it then i guess but this turns into like a paste and it is a greyish color