Garage slab cracks are similar to wall cracks. It could be due to hydraulic water pressure cracking the slab from underneath. It could be the strength, pour and drying of the concrete. It could be incorrect compaction and preparation before the pour or constant car traffic and winter weather and water interaction over the years. If not addressed, the crack will expand and continue to spread. Other cracks can then develop off of a main and shoot off in different directions. Eco Energy Guard uses epoxy’s and a sand compound that penetrate deep into the pores of the concrete to permanently bond the two sections together.