About six months ago, the builder removed the sealer and waxed the floor to allow it to breathe and the salts to rise through the floor. Take it from a pro, RadonSeal's CrackWeld will get the job done as advertised. With situations like this involving many players, I like to go back to the start and focus on the key issue. The more water you have, the weaker the concrete surface. There are also cracks running up to the audio and electrical boxes in the floor.
The high-gloss wax makes the scratches more apparent. This guide shows you how to put the cartridge, backflow restrictor, and mixing nozzle together. Our job was to then grind and polish the entire floor to the level of gloss required. For small jobs, a chipping hammer will be all you need, but larger repairs are much easier with an electric chipping hammer or even a jack hammer. Sawing additional control joints in places where there may not be enough of them is about the only solution. For a texture, pull a damp push broom over the concrete.
The engineer involved with the project gave us a method of grinding that allowed us to achieve the correct sheen on gloss tests. For repairing joints that require flexibility you can use RadonSeal's. The likely causes are poor subbase preparation and joint location. Once the floor is ready, you can cut in the edge of the room by hand with a brush, but use a roller with a telescopic handle for the center portion to make the job go more quickly. Keeping the cement wet will make it harder less likely to crack and adhere to the surface better.
If the subbase is jeopardized or was not prepared properly, no number of control joints will limit the cracking. It appears from your photos that the floors are saw cut in a square or tile grid pattern. If you get a soft slab, you end up with what you are experiencing. The crumbling pieces of concrete may need to be removed, or they can be glued back into place with either system, depending on the size and depth of the pieces. On a floor comprised of thousands or tens of thousands of square feet of concrete flatwork, a few cracks are to be expected and are generally deemed acceptable. You'll go to RadonSeal's page If you liked this, please share.
We have tried several floor cleaners most recommended by the installer and soap and water. This article has also been viewed 340,558 times. At this point, you may need to splash a little water on the surface to slow the drying, as well as making the finishing process somewhat easier. Vacuum, then clean the area with water and a wire brush. Answer: It sounds like you have a chronic efflorescence problem. But, knowing how to repair a concrete crack isn't common knowledge.
Step 3 - Pour silica sand into the crack and add more CrackWeld to it. Recently, one area was covered with a high-gloss wax. There have also been some comments about how the store has maintained the floor and their use of chemicals to clean it, which may have caused the concrete finish to fail. I'm going to share with you my easy step by step guide for fixing cracks in concrete. During the three years we have lived in the house, our builder has tried various things to fix the floor. This will also push down the aggregate and make the final smoothing easier.
The cracks run both perpendicular and parallel to the saw cuts. As a general rule, these finishes should not scratch under normal daily use, but they are not immune to wear over time. . I think you have a pretty strong case that installation deficiencies caused the problems with your floors. Patch any holes and clean it thoroughly to ensure that the paint can adhere effectively. Aside from the number of cracks, their severity leads me to believe they are beyond what I would consider acceptable for a floor of this type.
This would include installing French drains or possibly regrading the slope of your property. If you have a slightly higher budget, you can also use ceramic tile or laminate flooring to cover the concrete, but those installations are usually more complex. It's not for joints that require some sort of flexibility. Polished concrete with a poor mix design or inadequate curing will suffer from premature pitting. This paste is the material that forms the surface of the finished slab. Professionals also use grinding machines to prep the surface for repairs. Can anything be done to salvage the floor? Micro-topping treatments may include two or more base coats and, in some cases, a very thin top coat without sand, if a very smooth finish is desired.
Answer: All concrete cracks to some extent. The most effective method depends on the extent of the damage — and how much you're willing to spend. Lithium or sodium silicate hardeners are most commonly used. This usually indicates a mix design or curing issue. Paint It If your old concrete floor is stained or just looks drab, painting it is an inexpensive way to fix it up. Concrete strength is directly related to the water content when placed and finished.