When laying tiles in a home or commercial building, most people believe that ceramic tiles and grout are waterproof. However, water can penetrate through cement-based grout and affect the substrate underneath. When this occurs, cracks start to appear in the tiles. Using a crack-prevention membrane-like RedGard Waterproofing is an additional layer of protection and will reduce the risk of cracks forming on the surface of your tiles. For this primary reason, RedGard Waterproofing is such a useful solution when applied to tile and stone surfaces that receive high levels of water content, such as shower floors.
Applying RedGard Waterproofing to new and existing interior and exterior floors also has the following benefits:. In that case, you should definitely consider picking up a tub of RedGard Waterproofing to apply to the surfaces most exposed to water.
As one of the most popular and best-selling crack prevention membranes on the market, you can pick up a tub of RedGard Waterproofing from all major hardware stores like Home Depot. You can also order RedGard on Amazon and other online retailers. The good news is that applying RedGard Waterproofing is relatively straightforward and is most commonly spread by roller, trowel, or airless sprayer.
Below is a detailed step-by-step guide on how to install RedGard Waterproofing to prevent cracks and ensure the durability of your tile or stone flooring:. Before you apply RedGard Waterproofing, the first thing you need to do is prepare the surface.
RedGard must be applied to surfaces that are angled and sloping towards drains. You should also ensure that the concrete or other material upon which the RedGard will be laid is structurally sound, free from cracks, stains, and other contaminants.
If you need to treat your surface before laying RedGard Waterproofing, be sure to allow it to dry thoroughly first. RedGard is best applied on scarified and leveled concrete, too. RedGard is best applied with one of the following:. You should also wear a pair of heavy-duty gloves that will protect your hands from the RedGard solution. Start the application of RedGard Waterproofing at the corners and intersections where the walls and floors meet.
As a guide, aim to apply RedGard to six inches at either side of the intersection. So will cement board or Hardibacker. RPM mat people will tell you the benefits of their mats over the heat membranes.
Uncoupling heat membrane people will tell you the benefits of their system over RPM mats. I would want to know if it achieved that rating with the vinyl glue that the company recommends to install. It used to be that to install RPM mats over concrete that a urethane adhesive was required. The urethane adhesive was a crack isolation membrane all by itself- whether you installed anything over it, or not. So is the claim of crack isolation with that adhesive or the vinyl glue?
This is a good adhesive if installing over concrete. If you plan on using other adhesives and need a crack isolation membrane then I would try to find out more.
Thank you for all that info, really appreciate the time you take to answer. Hi — We have some LVT that has issues with the adhesive coming up thru the joints between the tiles. The house is built on a slab and the LVT just went right over the concrete slab with no membrane or redguard or anything under it. Thanks very much — I appreciate your time and help. You might try going to the John Bridge forum and asking this question in the Advice section.
Our installer had said we have option of installing ditra adds a fair amount of cost but can also go without it. I like the idea of adding a membrane over a concrete slab.
However, typically concrete will have cracks in it and Ditra is not considered a crack isolation membrane. It should have a A We about a sq ft of pool deck that has significant cracks and the deck is tied to the concrete coping, movement still occurs will a decoupling membrane still work with the deck still moving.
CIS Membrane or not, that is the question. Floors will have electric heat by Thermosoft taped or hot glued to the Duroc. Then either floor leveling compound or thinset to embed and secure the wire and mesh. Should an uncoupling membrane or CIS membrane be used over the thinset? Large format marble tile will be used to finish.
I would prefer less height in this kitchen. So if you are really an overkill type builder then you could install one over the top. The ceramic tile installer could have also installed crack isolation membranes under the tile.
These membranes are available as a liquid coating that is applied over the concrete slab or an actual synthetic fiber fabric. They allow the concrete floor below to move independently of the tile that is laid just above.
The membranes work well if there is slight cracking but will not prevent cracks in tile should there be significant structural movement caused by a foundation, soil, or construction defect. These membranes are often sold at ceramic tile specialty stores that cater to real ceramic tile professionals. Since your home is still within warranty, I would write a letter to the builder informing him of the defect.
Hopefully, you have extra tiles left over that are from the same run or batch. If not, try to get some matching replacement tiles immediately. Purchase matching tile grout at the same time. I would wait another six months or so before I would initiate the repair. Additional cracks may appear between now and then and all broken tiles can be replaced at one time. If the grout gets dirty before the repair, it should be cleaned just before the workmen arrive. Doing this will insure that the new grout will match the existing grout perfectly.
Dirty colored or white floor tile grout can be successfully cleaned with a solution of oxygen bleach. Existing floor tile cracks can be patched with clear epoxies. Chemical Resistant Epoxy Mortars. Single-Component Grout.
Pre-Mixed Grout. Caulk and Sealant. Grout Additives. Grout Colorant. Problem Solvers. Stone Restoration. Travertine Repair Kit. Cut and Mark Tools. Grout and Finish Tools. Moisture Control.
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