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#FLOOR SLAB CRACK REPAIR CRACKED#
#FLOOR SLAB CRACK REPAIR PRO#

Fill the hole or chipped area using a putty knife and the repair paste.

Use a paint stick and mix into a "peanut butter consistency" like paste (use as much sand as you need to).

Squirt some CrackWeld into a mixing cup and add silica sand.

YES, to fill holes and chipped areas of concrete

Immediately broadcast silica sand into the repair material (a light broadcast of sand, not too much) and let dry completely.

Flood the spalled concrete area with the CrackWeld material.

Repaired crack after grinding with a 4" grinder Can I use CrackWeld to fix concrete spalling and small holes?

Then, after another 10 minutes, use the concrete rubbing stone or the palm sander to smoothen the repair material even with the concrete floor.

Scrape off most of the excess repair material after about 10 minutes, using the putty knife.

If you don't want to use a diamond grinder:

I like to wait about 20 minutes and grind the hardened CrackWeld repair smooth and even with the concrete floor, using a 4 inch electric hand grinder with a diamond cup wheel.

Squirt some more CrackWeld resin over the top of the sand (enough to make a paste with the putty knife) and continue to push into the crack until the crack is slightly over filled.

measuring cup and pour the sand over the crack, pushing the sand into the crack with the putty knife.

Put the dry silica sand (included in the kit) into the 1 Qt.

Inject the CrackWeld resin into the crack to "prime" the crack and wet the inside edges of the crack.

Vacuum out the crack to remove any dirt, debris, and loose concrete.

IMPORTANT: The inside of the crack must be clean and dry!

#FLOOR SLAB CRACK REPAIR PRO#

Pro CrackWeld kit will repair 25 lineal feet.diy CrackWeld kit will repair 12.5 lineal feet.Pro CrackWeld kit will repair 50 lineal feet.diy CrackWeld kit will repair 25 lineal feet.Pro CrackWeld kit will repair 100 lineal feet.diy CrackWeld kit will repair 50 lineal feet.How many cracks can I fix with a kitĪssuming the concrete floor thickness is 4 inches: Step 3 - Pour silica sand into the crack and add more CrackWeld to it. It's also considered a structural repair material, it will stop a crack from any further movement. Water, vapor, or other liquids and gases can not penetrate it. The repair material bonds with the sand to form a "concrete like" mass inside cracks, spalls, and holes. You don't need to widen or "chase out" the crack. When you eject the material out of the cartridge and through the mixing nozzle into the crack, it quickly reacts and cures rock hard. What is CrackWeld?ĬrackWeld is a 2-part polyurea repair material. You use the same methods and same techniques with each kit to produce the same results. If you buy the diy CrackWeld kit, you use your own caulking gun and use a single cartridge at a time. If you buy the PRO KIT, it comes with that duel cartridge caulking gun. I buy the PRO KIT Duel Cartridge's because my company, Day's Concrete Floors, Inc specializes in concrete crack repair. When I repair cracks in concrete like the one in the picture above, I always use CrackWeld Concrete Floor Repair Kits from RadonSeal. You can use a rubbing stone or a palm sander if you want, it's just not as fast and takes a little more effort to smooth out the repair material with these tools. I prefer the 4" hand grinder with a diamond cup wheel. You'll need a way to smooth out the repair material once it is dry. Palm sander with 60 grit paper (again, i'd rather use the grinder).Concrete rubbing stone (rather use the grinder) or.4" Hand grinder (what I recommend using) or.

#FLOOR SLAB CRACK REPAIR CRACKED#

Here's a list of the tools you'll need to fix your cracked concrete. Step 2 - Prime the crack with CrackWeld first What you'll need for tools