How To Find High And Low Spots On Concrete Floor

One of the best and cost effective methods we ve found is by using a grinder with a diamond cutting blade accompanied by a dust extraction hood with vacuum attached.

How to find high and low spots on concrete floor.

Using a heavy duty grinder. Mark any concrete bumps that are raised above the rest of the floor with an x and any dips that are lower than the floor with an o. When the high spots are excessive 12 mm plus a fast effective approach can be adopted. Problem is there are no means to accurately determine when the desired levelling has been achieved.

Sweep over the floor with a carpenter s level to reveal any depressions you may have missed. Hydraulic floor jack low profile. This is where tapping professionals come in handy. At the onset they can identify where the high spots are by using varying methods.

Step 2 find the high and low spots in the concrete floor use a carpenter s framing square and two long pieces of wood planking that you have checked are straight to examine the floor for high and low spots. How to find high and low spots on concrete floor baca selengkapnya postingan lama beranda pengikut. Then they grind the spots down using a walk behind heavy duty grinder that looks like a floor buffer but with diamond blades on the bottom. The conventional way of removing high spots in concrete is by means of grinding concrete planes.

Ranger otc norco omega astro pneumatic and more. Besides finding the high spots the major challenge is in knowing when to stop grinding. A flashlight aimed at the bottom of the level or straightedge will help you quickly see low spots as the light passes under the level or straightedge. If you place one end of the level or straightedge on the benchmark high spot and slowly rotate the level around the floor you ll discover both low and high spots.

Use a piece of chalk to mark all obvious high and low spots on the floor. Mark the high points with a pencil so you know which imperfections to grind out. Mark the high spots with a series of arrows or zigzag lines with a marker or sidewalk chalk. You can use any old string of course but the chalk line will also leave high spots marked for you.

Do this radiating around the high spot until you ve mapped out the radius of where the low spot has to be filled in to meet the high spot with the appropriate grade according to the installation instructions. His crew puts water on the floor to find the high spots. Tack a chalk line to the wall just above the floor on one side of the room stretch it across the room to the other side just above floor level and see if it leaves any gaps or touches the floor in spots. However this type of equipment can be expensive to rent and will require many passes to remove high spots.

For one some concrete grinding service people put water on the floor to find the high spots.