New concrete looks new, and old concrete looks old. The process involves applying a … Skim-coating or resurfacing concrete patios, walkways, driveways, walls and stairs not only renews their appearance, but it extends their lifespan by improving drainage and waterproofing. 2 - 4mm. If you have a concrete garage floor, driveway, sidewalk, or patio that is starting to show its age, you are left with two options: You can demolish and remove the old surface, prepare the base, and pour a new slab; or you can use a resurfacing process to restore the slab to its youthful appearance. Concrete resurfacer is a very strong product, rated for a compressive strength of about 4,500 psi. At $25 to $55 per 40-pound bag, or up to $70 for a 50-pound pail, resurfacing is not a cheap project, but it is less expensive (and much quicker) than tearing up an old slab and pouring a new one. NOTE: for patches or cracks over ¼-inch thick Concrete Patching Compound should be applied in multiple layers, allowing each layer to dry before applying the next. Mix the Thin Finish with your paint mixer (Image 1). This can be hard to determine, but if the height of the slab is offset on adjoining sides of cracks, it is an indication that major heaving is occurring. Use on vertical walls for repairs from 1/8 to 2 inches (3 to 50 mm) or apply it in lifts to maximum 3 inch (76.2 mm) thickness. Jeff Beneke is a home renovation and conversion expert. Introducing "One Thing": A New Video Series. The dry powder is mixed with water to form a slurry, which is then spread over the concrete slab using a long-handled squeegee. This is actually stronger than the slab itself, so properly applied, resurfacing layers can be very durable. D. … I found a handy tool when I was skim coating a wall that also made this job a lot easier. Skim-coating is the process of applying a thin layer of material, such as cement, over a wall to even out the surface. Final thickness of StoColor Lotusan shall be minimum 2.5 dry mils, per coat. This is a thinner mixture than the Texture Pave below and will be approximately one-eighth of an inch thick. roll on layer of bonding agent and smooth. Score in a horizontal pattern. Scratch coat shall substantially cover the lath. Because resurfacer is an expensive product, some homeowners try to do the job with ordinary mortar mix, which has a similar consistency to resurfacer and is much cheaper. I have known people go down to an inch, but any less needs something like polymer emulsion or epoxy resin screeds for a decent job. (Not liquid to dry.) Stir Concrete Patching Compound using a margin trowel or putty knife. (3 mm) 4 Skim coat of stucco material ¼ in. Skim coating in floor preparation is a process in which a compound is applied to the subfloor as an underlayment to reduce variations in the floor and provide for a smooth and adherable surface over which new floor coverings can be installed. Average thickness is 12mm. Lots of high and low spots. The process for skim coating concrete is much the same; however, the material used is not joint compound, but rather, a solution designed for use with concrete. 810 is a three-part urethane polymer concrete high-build coating. Let the final coat overnight dry. 1.2kg / m 2 / mm thickness 20m 2 / 25kg bag at 3mm thickness… How to Skim Coat Concrete Blocks. That’s pretty much it. Bag of vertical concrete mix from Flex-C-Ment. The skim (finish) coat is responsible for smoothness. This does not work for very long, since mortar lacks the additives and bonding agents that allow resurfacer to adhere to the slab. Now it was time to mix up the concrete feather finish and start coating the fireplace! The crawl space is graded with limestone and then six mil visqueen is laid as a moisture barrier. 5:55. It is designed as a thin film roll applied, concrete resurfacing classified, for concrete protection flooring product ranging from 8mils to 16mils thickness. You may also find both consumer-grade and commercial-grade products available; the commerical grades are designed to be more durable than the consumer grades. They can be applied in layers as thin as 20 mils (a mere 0.02 inch), or you can apply several coats to create a textured broomed or troweled finish. 1- 2mm. It's a project that just about anyone can tackle, and it's a lot more affordable than replacing the concrete slab. How to skim coat concrete Microtoppings are easily applied with trowels, squeegees, brushes, or rollers, depending on the desired look. The first layer is Thin Finish and it should be 1/8 inch thick. If you plan to resurface only part of a larger slab, be aware that it is hard to match colors. Trowel apply 2-3 coats – no more than 1/16” thick. Concrete resurfacer is a special cementitious product that blends ordinary Portland cement, fine sands, polymer modifiers, and other additives aimed at providing adhesion. Apply first coat directly to primed substrate and allow to dry completely before applying second coat. The application of concrete resurfacer is quite an easy process. Expect to buy quite a number of bags if you are resurfacing a large slab. Roll over image to see After Image FEATURES Approx. So if your layer doesn't cover the entire floor you'll need to deal with that by tooling at partial cure, or by skimming with another product such as a vinyl concrete patch. Apply two coats of StoColor Lotusan at 5 – 7 wet mils, per coat, by brush, roller, or appropriate spray equipment. (6 mm) 4 ½ the code required thickness This product is easily applied with flat to 1/8” v-notched rubber squeegees, brushes, Unlike other cement products, it is designed to be applied in very thin coats (no more than 1/2 inch thick), and its additives provide good adhesion to an existing slab. If you are resurfacing a slab with expansion joints, don't cover over the joints with resurfacer. Let dry at least 2 hours between coats. Open the premixed concrete and scoop some with a flat metal trowel. Because of their high polymer content, vertical mixes require no curing. Concrete resurfacer should not be applied in cold weather. They pour and spread easily, and your only real job is just to ensure that the resurfacer has been spread around the entire surface. All barriers to Micro-Top adhesion and penetration should be removed prior to the cementitious skim coat application. "A Duck's Tale" - Concrete skim coating in Lakeworth, TX - Duration: 5:55. The concrete was kind of..... wavy. You don't have to worry about trowelling to a level surface, as you do when pouring a slab with new concrete. Play some tunes or listen to a book on audio. Coat Thickness. Re: Homemade Self Leveling Skim Coat Our floors here are often 4 inch concrete with a 2-3 inch sharp sand/OPC 3/1 dryish mix screed to level. Step 5b Spread and texture the concrete patch to match the surrounding concrete. There are lots of concrete mix products on the market—including mortars, repair patchers, fast-setting concrete mixes—and it can be hard to choose among them. … Roll on a layer of bonding agent. These tutorials assume the pre-existence of countertops, albeit ugly ones. Make sure that the current temperature is at least 50 degrees Fahrenheit, and that the temperature will stay above 40 degrees for at least the next 24 hours. 3 hours. Stains may seep through the resurfacing material unless they are removed prior to application. J ... Ive already got 2 coats of skim coat on. 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