Is shot blasting necessary while getting epoxy done?
 

Hey!
I am getting my garage renovated next week. I have got a good quote from Proseal Floors in Mississauga. I was going through their website. They have mentioned on their website that shot blasting is done to improve top layer of existing concrete www[dot]prosealfloors[dot]com/products-services/shot-blasting/. I guess this is done to make the floor even. Is it really necessary to do this? I am asking this because my concrete floor is already even. So do I have to get it done?