2 Proven Surface Prep Tools for Removing Glue and Mastic

You’re about to refurbish a concrete floor. Once you determine the square footage of the work area and the condition of the existing floor, you decide on the type of floor finish you want to achieve, and a budget. Before you can apply any new overlay or polish, you must first prepare the existing surface, removing any glue or mastic residue left from old floor coverings.

Glue & Mastic Residue Removal

Based on your initial assessment, use the overview below to determine which of the two most effective surface preparation tools for removing glue and mastic residue will work best for your floor revitalization project.

EDCO 10″ Propane Turbo Concrete Grinder

  • Grinding cup wheel includes 10″ diamond disc, 2″ – 3″ Multi-Vacuum Port, Water Port and Leveling Kit
  • Achieves super smooth surface profile with a working depth of 1/8″ per pass
  • Works four times faster than other conventional Edco grinders
  • Rounded shroud allows grinding within 1/2″ of any vertical surface with better dust control
  • Effective in a wet or dry environment
  • Ideal for grinding rough concrete surfaces and removing coatings
  • Rigid head assembly ideal for grinding uneven expansion joints, high spots, joint curls and bridge decks
  • Optional flex head assembly ideal for preparing a smooth, flat floor to receive a new coating
  • More costly because of diamond technology

Swing Machine with Diamabrush Concrete Prep Plus Tool

  • Can be installed on existing floor maintenance equipment
  • Ideally suited for hard-to-remove coatings and thin layers of paint or epoxy
  • Flexible blades designed to always remain in contact with the floor regardless of imperfections
  • Uses a 25 or 100 diamond grit bonded to metallic backing and assembled to flexible steel spring blades
  • Designed as the first step of a complete concrete floor preparation system that includes six different polishing tools used to achieve the level of gloss the floor application requires

When you do need specific equipment, count on Runyon Surface Prep. We carry a full line of EDCO grinders, as well as the Diamabrush Concrete Prep Plus Tool, among other Diamabrush tools.


Repair Your Spalls to Achieve a Durable Concrete Fix

Repair Your Concrete SpallsIn addition to concrete floor joint repair measures, every day wear and tear on a concrete floor can cause the surface to chip and crumble. This effectively means your concrete surface breaks into small pieces that create pock marks, nooks and crannies, deterioration, etc. However, surface spalling can be repaired using these steps.

Tools & Equipment

Repair Materials

Step 1. Make cuts with blade or chip out section at outer edges of spalling with a chisel to at least ¾-inch deep, creating a vertical edge.

Step 2. Grind out or chisel any spots of the floor with the work area that are higher than the level of the edges. Vacuum, brush and wipe the area clean with a rag.

Step 3. Overfill the area with repair material and trowel smooth and slightly higher than the floor surface.

Step 4. Once repair material is cured, remove any overfill to create a smooth, flush surface by grinding with a high quality polishing pad.

Runyon Surface Prep carries a full line of Metzger/McGuire repair materials designed for use on industrial or retail concrete floors to repair cracks, surface spalls and pop-outs, as well as other defects that happen over time on concrete surfaces. Find Metzger products on our website and videos of them in action on our YouTube channel. Please be sure to reach out with questions via the comment section below or by contacting us.

*photo courtesy of Metzger/McGuire

How to Fill and Repair a Concrete Joint in 2 Simple Steps

How to Repair Your Concrete JointsYou are tasked with fixing a deteriorated floor surface. Before your begin the repair, it’s important to determine the cause of the defects, which will help you find the best long-term repair strategy for the project. Any structural causes will need to be corrected prior to filling a joint.

Joints can be filled three different ways, depending upon the extent of the floor’s deterioration. If the existing filler is well-bonded structurally to one or both sides of the joint, you can refill voids without removing it entirely, or making a partial removal. However, if the existing filler is not well-bonded or appears to be installed improperly, remove it completely before making the joint repair.

Three Considerations

Consideration 1: Select floor repair materials that meet the requirements of a facility’s operations. Consider frequency and type of traffic — foot, vehicle, heavy equipment. Also consider building temperature, the surface area to be repaired and the work window you have to complete the repair. This will help determine whether you need to use more rigid products for large repairs, if epoxy products will have the time required to cure or if you’re working in a freezer or cooler room.

Consideration 2: Prepare the surface for long-lasting repair by making sure the area is well-defined and cleaned properly prior to filling with repair material. Proper surface preparation is critical to a successful repair. Take care that the edges of joints, cracks and surface spalls are at least 1/2-inch deep and the area is not only clean, but dry prior to filling.

Consideration 3: Avoid a concave or dished joint by filling with repair materials slightly higher than the floor surface. Once cured, the excess material is ground or shaved to meet the original surface, restoring a smooth, continuous, flush profile across the floor.

Tools & Equipment

Repair Materials

The Process

Step 1. Use joint cleaning saw or right angle grinder equipped with a braided wire wheel or suitable diamond blade to remove existing joint filler to a nominal depth of ½-inch below surface, making sure all filler residue is removed from joint walls back to clean concrete. Vacuum joint clean.

Step 2. Overfill joint with appropriate filler. Allow filler to cure, then razor flush with floor surface.

Additional Resources

In addition to these tips, products and processes, please take a look at our YouTube page for specific joint repair videos taken during various training classes (presented by experts from Metzger/McGuire). Also, please comment below or contact us with additional questions, or visit our website for a full listing of Metzger/McGuire products.

Crack Chaser Saws Make Crack Repair Easier

Crack chaser saws are designed to help simplify general crack repair in concrete, asphalt and stone. Building contractors, road crews and concrete contractors use crack chaser saws to repair roads, driveways, foundations and sidewalks because the blades not only cut through different materials such as nuts, bolts, rebar, fiberglass, PVC, ductile, HDPE, wire, rock, stone, epoxy, polyurea and caulking, they can follow, or chase, a random crack pattern and widen it so the cracks can be mended with fillers. In addition, crack chaser blades typically will not chip, crack or damage the surface that surrounds the crack.

Benefits of Crack Chaser Saws

  • Simplifies general crack repair
  • Can chase and widen cracks
  • Used on concrete, asphalt, atone and granite
  • Cuts through a variety of materials
  • Blades won’t chip, crack, damage surfaces
  • Can be used for both wet and dry cutting

A random crack chaser saw has a center-mounted blade and caster wheels that allow an operator to follow random crack patterns in the surface of the work area. Typically, an operator can also set a cutting depth with ease, while walking behind the machine.

Joint cleanout saws are use for cleaning out joints as well as concrete sawing and trench cutting. The up-cut rotation of the blade allows for complete material extraction and the saw can include an easy connection to a dust collection system.

The variety of crack chaser saws available from Runyon Surface Prep make your flooring jobs simpler. Below is a detailed comparison:

Crack Chaser Comparisons