In the final stages of finishing a room in our walk-out basement. This particular room has a long history, as it was originally a garage. Thus, it has a slight pitch from the back of the room towards the wall that once contained the garage door (which is now a sliding glass door).
Unfortunately, there is a ridge down the center of the room where the concrete bows up about 3/8" of an inch over a 2' wide strip. I believe that this kind of ridge will cause issues when laying the laminate flooring.
My initial thought was to use self-leveling compound. However, being self-leveling, it will run down and pool quite thick at the front of the room, and require a significant amount to do (and might even go higher than the threshold of the sliding glass door).
I am unsure as to what type of product I could use that would be trawl on, and thick enough not to run, yet bond well with the underlying slab. Any thoughts on the best way to flatten a concrete floor that has a pitch in one direction that must be maintained?
Best Answer
Cut slots in the concrete close together with an angle grinder and diamond blade, knock off the little ridges you have just created, and then either flatten with a cup grinder or level up with compound.