How to fix big deep crack in concrete patio?

Question

about 20 feet long......3/4 inch wide.......4 inch deep............any product at menards, home depot, lowes to fix it?.......more for cosmetics........type of caulk? or just quickcrete and a putty knike?......thanks in advance

Answer 1

You know you are not going to fix it - you may be able to conceal it.

I suggest pushing the correct size "backer rod" down in the cracks so its is about 1/2" below the surface. This is a styrofoam round materials is used to fill cracks prior to installng the crack filler.

Now, Purchse a crack filler called" NP1". This is an elastic type filler used to fill concrete cracks, control joints,etc.

There also is a product called "SL1" however it is self leveling and if the slab is not level this materials will run to the lower level- it's not good to use if your surface is not very level.

Works Good.

Answer 2

The problem with the quickcrete is that it will expand in the cold and potentially crack even further. Best bet, even though it will be expensive is concrete caulk and a putty knife. It will take a bit to fill it...but most of that stuff won't expand or shrink in weather change..(be sure and read the label to make sure)..so I would do that...wait for it to dry and paint the whole patio with a concrete finish.