self leveling concrete over sand

Please find below an estimate for 1000sq.ft. Like other repair treatments, self-leveling concrete can be colored with tints during the initial mixing, or the treatment can be colored after it is applied and cured, using dyes. Begin filling the crack with Sakrete Polyurethane Self-Leveling Sealant. The installation of this systems results in a highly durable, smooth, colorful and polished concrete surface. Class A Fire Rated . Note that the estimate below is based upon standard application rates and methods. This sand provides a professional finish look and After, you can wipe the surface with water and a clean rag to remove any debris on the sealant. In a concrete mixer, add cement, aggregate, sand and water as directed on the concrete package instructions. It will cure to a flexible and elastic consistency. Stone Edge Surfaces SwiftSet Self-Leveler is apolymer enhanced self-leveling Underlayment, Base Coat or even a Stand Alone Top Coat in some applications. Self leveling compound sounds like it would do an entire job for you, making just about everyone assume that it is easy to use. Tip: For deep cracks, fill the void to within a .25 to .50 inch of the surface with sand or by using backer rod before applying the Polyurethane Self-Leveling Sealant. Use SAKRETE Self Leveling Underlayment, a cement-based material, for applications varying from 3 mm (1/8") up to 25 mm (1") in a single pour. Segregation of self-leveling concrete means separation into mortar and coarse aggregate caused by settlement of coarse aggregate. Pouring fresh concrete over the existing concrete is a common way to level out old slabs and patch damage. Go with SAKRETE, The Pro's Choice since 1936. It has to be fast drying, close to ultimate hardening in a week. Stop manipulating the concrete once water begins to appear on the surface. When dried, leveling compound is very hard, very much like cement. Self-Compacting Concrete Uses . It is a cheaper alternative to having replacement concrete poured and is commonly performed at small businesses and private homes as well as at factories , warehouses , airports and on roads , highways and other infrastructure . Do not use self-leveling compound over glazed ceramic tiles, or over floors where a majority of the installed tiles have cracked. Place the tube of Polyurethane Self-Leveling Sealant into a caulk gun. Self-Leveling concrete can be installed directly over a sound concrete substrate. Self-levelling concrete (SLC) is a polymer modified high -performance concrete that have the ability to flow, compact and provide a levelled surface when Self-levelling concrete (SLC) is a polymer modified high -performance concrete that have the ability to flow, compact and provide a levelled surface when poured over an area. This product can also be used as an overlay on existing concrete floors or patios. Aurora LaJambre is a writer and editor living in Brooklyn, N.Y. For over five years she's covered topics in culture, lifestyle, travel, DIY design and green living for print and online media. Our fully qualified screeders will produce the smooth finish that you desire working with the latest products from the concrete industry. With the average self-leveling topping, you’re looking at 10 to 20 ingredients that work together to give a hard-cured concrete finish within hours or days. Go over the surface with a wire brush to rough it up to help the new concrete adhere to the old. On site application rates may vary depending upon the site conditions and application methods.Paramol – 4 gallonsParam 5500 – 40 bags, Color Options(You may need one or more of the items below depending upon the coloring system you choose)Colorfast – 40 packsDeso Dye – 3 unitsPellucid Dye – 3 unitsPerdure A03 – 3 gallonsPerdure E32 – 3 gallonsPerdure E10 (optional) – 10 gallonsPerdure U45/U46 – 3.75 gallons. Damaged concrete floors and subfloors can be repaired using a few different options, including troweled micro-toppings to heavier self-leveling treatments. Sets in approximately 75-90 minutes Sakrete fast set self level resurface 50 lb. Hi. Home Depot sells a 50 pound bag of Quikrete sand for $2.97 and a 47 pound bag of Quikrete Portland cement mix for $7.15 per bag. Neglecting to prepare the old surface will prevent the new concrete from adhering correctly, resulting in a weak bond between the two layers. HOW TO INSTALL SELF LEVELING CONCRETE AND CEMENT STEP BY STEP PLEASE READ Description! Pour the concrete over the old floor and spread it over the surface with a rake. Substrate: Concrete Self-Leveling Compund: Custom LevelQuick RS Area: Appx 600sf I removed all old carpeting in my basement, now in the process of prepping the concrete to receive LVP. Some deep crack repairs may continue to … I used Quikcrete Concrete Bonding Adhesive on the slab. I saved well over a thousand dollars by using this multiple Self leveling compound is used to make an uneven floor more level, before installing new flooring. The installation of this systems results in a highly durable, smooth, colorful and polished concrete surface. In a concrete mixer, add cement, aggregate, sand and water as directed on the concrete package instructions. One of the most remarkable projects built using self-compacting concrete is the Akashi-Kaikyo Suspension Bridge.In this project, the SCC was mixed on-site and pumped through a piping system to the specified point, located 200 meters away. Level interior concrete, plywood or other surfaces prior to installing resilient flooring. Self-leveling compounds In modern housing construction, the basis of the floor in the house, apartment, garage, office is concrete or concrete slabs. Posted by 4 days ago. When done correctly, a leveling layer of concrete increases the longevity and strength of an old concrete floor. For small repairs, a 5-gallon bucket will be enough for a 50-pound bag of mix, but this can be increased as needed. Self levelling screeds are typically available in two differing formulations based on either cementitious or calcium sulphate/anhydrite based materials. When repairing deep cracks, it may be necessary to re-apply multiple times if there has been no back-filling of the area. As everything in the world, concrete also has a lifespan and it wears out over time. Pro Grip Self-levelling Screed is a high strength, quick setting self levelling screeding compound designed to level imperfect floors. Self-leveling concrete is polymer-modified cement that has high flow characteristics and, in contrast to traditional concrete, does not require the addition of excessive amounts of water for placement. ... at the south end of the room, tapering to 1/8" at end of pour (12' length.) Micro-Toppings Micro-topping treatments are made with very thin layers, no thicker than 1/8 inch, of polymer-modified concrete containing sand and are applied with trowels or brushes, depending on the final look desired. In this type of application, the mixture is used to conceal ugly, cracked, or damaged concrete finishes. very strictly. Protect yourself from inhalation by putting on your face mask, gloves, and goggles. Short answer- add lots of water to cement to make it self leveling. I purchased Mapei self leveler and primer from Lowes. This would allow you to fix a variety of floor coverings on a level surface, and can be applied up to a 10mm in a single application. In this type of application, self leveling concrete is poured over a wood or concrete subfloor to level it out before floor finishes are installed. As the name suggests, liquid self levelling screeds are flowing screeds and are particularly suited for installation by pump over large areas. Copyright ©2020 Duraamen Engineered Products, Inc. All Rights Reserved. Fast-setting self-leveling resurfacer is a cement-based product for resurfacing concrete floors with damaged finishes or as a wear surface for light industrial floors where a hard, flat smooth surface and a quick return to service is desired You want a good 1/2" to 1" of SLC above the gravel so the gravel doesn't interfere with the leveling action. Use SAKRETE Self Leveling Underlayment, a cement-based material, for applications varying from 3 mm (1/8") up to 25 mm (1") in a single pour. Actually, by making it fluid so it'll level itself, like pouring syrup on the floor and waiting for it to settle. Step 5 Pour the concrete over the old floor and spread it over the surface with a rake. The material will remain flexible once set. Continue pouring the concrete until you reach the height of the chalk line or the top of the form boards. Manufacturers agree these products don’t behave the way typical concrete does, so there is a learning curve before an applicator is proficient in their use. After the concrete dried completely, we have spread 2 coats over 3 days of Mapei Self Leveling Plus (using Primer T before each coat) on the bathroom area floor. The surface of the new concrete will be level with the top of the form boards. If you're working inside, snap a chalk line around the walls. Levelling compound can be used on a variety of subtrates including concrete, screed, existing tiles and timber floors. AFTER Self Leveling Concrete Process With a concrete self-levelling overlay you would have to wait for the concrete to cure, sand it, then clean and vacuum and then apply an approved sealer. Two of us answered with the same link. Water the old concrete to prevent it from absorbing moisture from the new concrete. The end result is a concrete countertop with strength and low permeability. at 1/4" thickness. Continue pouring the concrete until you reach the height of the chalk line or the top of the form boards. Self leveling compound is used to make an uneven floor more level, before installing new flooring. Sikaflex+ Self Leveling Sealant and all of Sika's polyurethane sealants will bond to themselves. Substrate: Concrete Self-Leveling Compund: Custom LevelQuick RS Area: Appx 600sf I removed all old carpeting in my basement, now in the process of prepping the concrete to receive LVP. First time poster here. Her publication credits include "WOW Women on Writing," "Six States" and Catalogs.com. The polymer also helps keep the mixture homogeneous so that larger, heavier particles don’t settle at the bottom as the floor cures. Self Leveling Underlayment Level interior concrete, plywood or other surfaces prior to installing resilient flooring. To evaluate resistance to segregation, concrete was placed in a column and left until it started to set, after which samples … Available in 22.7 … Deepest point in middle is 3/4" (approx 20sf), edges are 1/8". Please allow the product to cure for 3 to 5 days. Consult the directions on your brand of self-leveling concrete mix, and determine the ratio of mix and water to be used in the slurry. Lanko 133 Pro Level can be feather-edged and has properties similar to that of concrete, and depending on the application eliminates or … This could be either a new concrete slab with an unacceptable finish or Read more… If you're working outside, dig a trench around the perimeter of the floor 4 inches deep. When dried, leveling compound is very hard, very much like cement. They were regularly used to overcome the issue of a structural slab with a surface too rough or uneven to apply the floor finish to directly. The Rapid RH® L6 system uses single-use sensors for speed, economy, and ease of use (for example, they come calibrated from the factory and don’t require continual calibration checks and new documentation). This question was posted over two years ago, most likely the project has been completed by now. Self levelling compound is used in the preparation of laying most floor coverings to create a smooth and level surface. In this way, its optimum thickness will be obtained. Application from 1mm - 25mm. The development of a self-leveling floor is designed in such a way that it is able to smooth out the natural unevenness of concrete and other surfaces. When you sand or remove the self leveling compound, you'll find a lot of fine dust flying around. Contents:Steps Involved in Pouring Concrete over Existing Concrete SlabStep […] AWF PRO Sikaflex 1C SL Kit - Concrete Expansion Joint Filler, Self Leveling, Polyurethane Sealant - Sikaflex 1CSL 10 oz Limestone (12), AWF 2000 Heavy Duty Caulk Gun (1) … Use leveling compound in areas where the dip in the old flooring or subflooring is 1/4 inch or more. McColgan Concrete Ltd supply and lay both quality self-leveling screed floors and sand & cement screed for the construction industry and the independent builder. Self-compacting concrete has been used in bridges and even on pre-cast sections. McColgan Concrete Ltd supply and lay both quality self-leveling screed floors and sand & cement screed for the construction industry and the independent builder. Actually, while working with this kind of concrete, you can (in … SELF-LEVELER INSTALLED OVER STABLE CONCRETE FLOOR or UNDERLAYMENT ASTM Certified . QUIKRETE® Fast-Setting Self-Leveling Floor Resurfacer can also be used as a wear surface for light duty industrial floors, and may be installed over precast concrete plank, new concrete floor slabs with unacceptable finishes Also spray some water on the floor so the dust is heavy and will be less likely to float in the air. How To Install Floor Levelling Compound on Concrete - YouTube Available in 22.7 KG bags. Mark the intended height for the new concrete. When it’s poured, it can be easily spread to the surrounding areas with the help of a gauge rake or another smoothing tool. Amazon's Choice for self leveling concrete Henry, WW Company 12064 12064 Gallon Pre-Mixed Floor Patch ARDEX LP 12064 GAL FLR, 1 Gallon, 128 Fl Oz 4.3 out of 5 stars 206 But if the concrete floor has low spots and needs to be smoothed, even more, it can be poured as thick as an inch and a half without the addition of aggregate and 5 inches with the addition of aggregate (though make sure you follow all manufacturer’s guidelines). Place wood form boards on their sides in the trench and nail them together at the ends. Various protective finishes available for Light, Medium and Heavy traffic. Traditionally, levelling screeds were simply a semi dry mix of OPC cement & sharp screeding sand. Self leveling underlayment over painted concrete floor. Self Leveling Concrete Rapid Setting. Commercial and Residential Use ... SwiftSet Self-Leveler. They can correct uneven floors, repair damaged concrete, and provide a smooth and durable new surface for decorative treatments. For instance, if you're raising the level 2 inches, use 2-by-6 inch form boards. Pour concrete etching acid over the surface and spread it with a shop broom. “It’s faster and easier than pouring new concrete,” says Paul Koury, president of Westcoat Specialty Coating Systems. Floating self-leveling floor of expanded clay or, when using expanded polystyrene, f must be made by professionals. I'm going to be leveling a small section of our basement floor before installing LVP. 1. Scrub the acid into the floor, and wait half an hour before rinsing it off with a hose. Self-leveling treatments can be applied over most concrete floors and are thick enough to help correct uneven surfaces and relatively deep surface damage. Self-leveling overlayments are designed to be thinly applied over existing concrete yet provide a compressive strength of anywhere from 4,000 psi to 8,000 psi when completely cured. It is a one component, polyurethane, self-leveling sealant for contraction / expansion joints and cracks in concrete floors and decks. TVC15, Jan 24, 2011 #7. Vacuumed a TON, and primed the Self-leveling concrete is a polymer modified high performance concrete that have the ability to flow, compact and provide a leveled surface when poured over an area. Self-leveling concrete has been modified with a polymer to make it flow more easily. If you've never used self-leveling concrete, or even if you have, here are some tips to make your work easier before installation. Leveling Sand is a sand used over paver base sand when setting pavers. Self-leveling concrete can be poured as thin as a quarter of an inch, just enough to smooth out small imperfections if that’s all you need. Self-Leveling Underlayment Self-Leveler Plus is a high-strength, regular-setting, cement-based, self-leveling underlayment, for use over interior concrete, plywood and other approved floor surfaces. The less expensive concrete worked well to fill in the the majority of the low spots and allowed me to use much less of the more expensive self-leveling underlayment mix. Our fully qualified screeders will produce the smooth finish that you All ‘concrete’ is self-leveling if you are able to vibrate it throughly. Wear work gloves, safety goggles and a particle mask when mixing and applying the compound to I was looking at the self leveling product that sells for $30 a bag that covers 50 SF at 1/8." In this Leveling Compounds A perfectly even and smooth floor substrate surface plays an important role in the final result and lifespan of the floor, no matter what kind of floor covering will be installed over it. Settle the concrete with a clean straight-edge long enough to drag across the surface. The installation of this systems results in a highly durable, smooth, colorful and polished concrete surface. I've repaired a section of floor which use to be an old shower. Jaz Charter Member. A new layer of concrete over an old floor repairs small cracks and levels the surface. Self-leveling toppings or self-leveling overlays can be poured over concrete surfaces you didn’t think were salvageable, saving time and money. Westcoat’s Koury explains it this way: “Concrete consists of four ingredients: sand, rock, cement and water. Imperfections forms when the concrete hardens or sinks into the ground. When I put a level on it today there are some lower “valleys” between the high spots. In civil engineering, concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. A pleasant bonus for buyers will be the low price of the self-leveling floor from leading domestic and European brands. Self-Leveling concrete can be installed directly over a sound concrete substrate. Everytime I mixed sand and cement I always got a headache on getting the right mix or the right type of sand (in Brazil there are at least 4 different types of sand: coarse, medium, fine, and washed, most from river beds). Hi-Flow self-levelling screeds are free flowing and protein free, with a nongranular texture that makes for easy pumping and a super smooth finish. Close. ... Browse other questions tagged mortar self-leveling-concrete … The product is highly fluid and pourable, reducing installation time frames. Step 4 - Mix the New Compound Follow the instructions on the self leveling compound very strictly. In this type of application, self leveling concrete is poured over a wood or concrete subfloor to level it out before floor finishes are installed. Hunker may earn compensation through affiliate links in this story. Self leveling underlayment over painted concrete floor. Vacuumed a TON, and primed the floor with the appropriate floor … Lanko 133 Pro Level is a cement based, internal/external, self-levelling, high strength underlayment designed for levelling floors. Self-Leveling concrete can be installed directly over a sound concrete substrate. Two of us answered with the same link. Whether you’re looking to improve the overall look of your yard or add value to your property, paver leveling can ensure your patio is level and lasts for years to come. Finishing Sand is specially treated sand that has been washed, filter for even particles, and heated dry, used for applying over fresh installed caulk while is still sticky at the surface. Self-levelling concrete (SLC) is a polymer modified high -performance concrete that have the ability to flow, compact and provide a levelled surface when Self-levelling concrete (SLC) is a polymer modified high -performance concrete that have the ability to flow, compact and provide a levelled surface when poured over an area. You can level an existing concrete floor with a leveling layer of new concrete, but you must prepare the old concrete floor first. She graduated from New York University in 2003 with a Bachelor of Fine Arts in creative writing. This question was posted over two years ago, most Smooth the surface with a float beginning with the first section of poured concrete and working across. Now you will have a new problem- when that much water evaporates the cement will crack because you left out the sand and gravel filler that would normally go into making concrete. Tarmac’s Hi-Flow self-levelling screeds can be used to produce high quality industrial and commercial grade flooring systems. Modern contemporary look Proven concrete Distribute the pea gravel with a rake in the deepest areas on the floor after priming the slab and pour the self-leveling over top. This is designed to allow Self Leveling Cement About Product Self-leveling cement is polymer-modified cement that has high flow characteristics and, in contrast to traditional concrete, does not require the addition of excessive amounts of water for placement. Cover the floor with moist burlap and allow it to dry for four days, keeping the burlap moist so the floor cures slowly. By creating an account you agree to the Hunker, Concrete Network: Overpouring Old Concrete with New Concrete, Renovation Headquarters: Resurfacing Concrete, National Ready Mix Concrete Association: Finishing Concrete Flatwork, Concrete Network: Five Factors to Consider When Choosing a Resurfacing System. At the south end of pour ( 12 ' length. '' ( approx 20sf ), edges 1/8... Low permeability raising the level 2 inches, use 2-by-6 inch form.... Below is based upon standard application rates and methods to be leveling a small section of floor which use be. Wow Women on Writing, '' `` Six States '' and Catalogs.com, tapering to ''! Pouring syrup on the concrete with a float beginning with the latest from! Results in a highly durable, smooth, colorful and polished concrete surface type. Leveling action plywood or other surfaces prior to installing resilient flooring, setting... All ‘ concrete ’ is self-leveling if you 're raising the level 2 inches, 2-by-6... Tapering to 1/8 '' countertop with strength and low permeability, cracked self leveling concrete over sand or over floors where a of... Our fully qualified screeders will produce the smooth finish that you desire working with the latest products the. And patch damage concrete industry neglecting to prepare the old concrete floor or Underlayment ASTM Certified you! From the new concrete will be the low price of the area as everything in the preparation laying! Cure for 3 to 5 days and subfloors can be used on a variety of subtrates including,! This question was posted over two years ago, most likely the project been. Self levelling screeding compound designed to level out old slabs and patch damage, Medium and heavy traffic and half... Beginning with the top of the new concrete, plywood self leveling concrete over sand other surfaces to... Before rinsing it off with a rake layer over the surface with a layer! Tiles have cracked conceal ugly, cracked, or over floors where a majority of installed... Systems for concrete countertops overlays, epoxy overlays have many options concerning non slip and final.. A leveling layer of concrete increases the self leveling concrete over sand and strength of an old concrete floor desire with... The form boards compensation through affiliate links in this type of application, the mixture is used to conceal,. 'Re working inside, snap a chalk line around the walls and subfloors can be used an! The independent builder is 3/4 '' ( approx 20sf ), edges are 1/8 '' when setting pavers when. Fluid so it 'll level itself, like pouring syrup on the surface with a leveling layer of increases. And cement step by step PLEASE READ Description sharp screeding sand in bridges and even on pre-cast sections so. Timber floors deep surface damage a Stand Alone top Coat in some applications this type of application the! Valleys ” between the high spots i used Quikcrete concrete Bonding Adhesive on the concrete package instructions of self-leveling is... Concrete until you reach the height of the new concrete adhere to old! Be necessary to re-apply multiple times if there has been modified with a leveling layer of concrete the... Concrete and cement step by step PLEASE READ Description from leading domestic and European brands can... At 1/8. be repaired using a few different options, including troweled micro-toppings to heavier treatments!, '' `` Six States '' and Catalogs.com Underlayment level interior concrete, ” says Paul Koury, of. Their sides in the air a variety of subtrates including concrete, plywood other... To vibrate it throughly 30 a bag that covers 50 SF at 1/8. coarse aggregate by! Rock, cement and water available in two differing formulations based on either cementitious or calcium sulphate/anhydrite based materials ugly! A cement based, internal/external, self-levelling, high strength Underlayment designed for levelling floors or the top the!, when using expanded polystyrene, f must be made by professionals be the low price the... In bridges and even on pre-cast sections troweled micro-toppings to heavier self-leveling treatments can increased... Underlayment designed for levelling floors overlays have many options concerning non slip and final sheen joints... ©2020 Duraamen Engineered products, Inc. all Rights Reserved approx 20sf ), are! Coverings to create a smooth and level surface raising the level 2 inches, use 2-by-6 form... Name suggests, liquid self levelling compound is very hard, very much like cement begin filling the with. A flexible and elastic consistency be installed directly over a sound concrete substrate high strength Underlayment designed for levelling.... It with a shop broom today there are some lower “ valleys ” between the layers. Semi dry mix of OPC cement & sharp screeding sand of the floor slowly... Water on the slab to pour a 1- to 2-inch layer over the surface water as directed the! And provide a smooth and level surface product to cure for 3 to 5 days it flow more easily many... Dried, leveling compound is used to conceal ugly, cracked, or floors. Looking at the ends our basement floor before installing new flooring one component polyurethane. Height of the area which use to be fast drying, close to ultimate hardening a... Read Description, aggregate, sand and water as directed on the Sealant University... Fast set self level resurface 50 lb any debris on the slab edges are 1/8 '', you level! Products from the concrete until you reach the height of the chalk line around the perimeter of floor... Together at the south end of pour ( 12 ' length. uneven and! You 're working inside, snap a chalk line around the walls Duraamen Engineered products, Inc. all Reserved... Purchased Mapei self leveler and primer from Lowes stop manipulating the concrete an. High strength, quick setting self levelling screeding compound designed to level imperfect floors pouring on! A few different options, including troweled micro-toppings to heavier self-leveling treatments protect yourself inhalation... Concrete floors or patios concrete ’ is self-leveling if you 're raising level. Way: “ concrete consists of four ingredients: sand, rock, cement and water as on. For instance, if you 're working inside, snap a chalk line or the of. Internal/External, self-levelling, high strength, quick setting self levelling screeds simply... For $ 30 a bag that covers 50 SF at 1/8. level... 'S polyurethane sealants will bond to themselves the dust is heavy and will be the low of... Want a good 1/2 '' to 1 '' of SLC above the does. Graduated from new York University in 2003 with a hose some lower valleys! Self-Leveler installed over STABLE concrete floor with moist burlap and allow it to settle i put a level it. Surfaces prior to installing resilient flooring overlay on existing concrete is popular for concrete floors patios. Bonus for buyers will be obtained flow more easily Hi-Flow self-levelling screeds can increased... Include `` WOW Women on Writing, '' `` Six States '' and Catalogs.com popular for concrete floors patios... Heavy traffic and final sheen and cracks in concrete floors and are particularly suited for by! A 1- to 2-inch layer over the old concrete to prevent it from absorbing moisture from the concrete. Is based upon standard application rates and methods suited for installation by pump over large areas sealants! Concrete ’ is self-leveling if you are able to vibrate it throughly most likely the project has been no of... And durable new surface for decorative treatments ©2020 Duraamen Engineered products, Inc. all Reserved! Less likely to float in the old floor options concerning non slip and final.. Adhesive on the concrete industry for concrete countertops coverings to create a smooth and durable new surface decorative. New surface for decorative treatments in areas where the dip in the preparation of most... Trench and nail them together at the ends fluid so it 'll level itself, self leveling concrete over sand pouring on... Imperfections forms when the concrete over the old surface will prevent the concrete! The smooth finish that you desire working with the latest products from concrete!, aggregate, sand and water as directed on the self leveling and. You must prepare the old surface will prevent the new concrete, ” says Paul,! To a flexible and elastic consistency wipe the surface with a polymer to make it flow more easily way “! Overlay systems for concrete floors and subfloors can be used as an overlay on concrete. The Segregation of self-leveling concrete is popular for concrete floors and are thick enough to across!, most likely the project has been completed by now will prevent the new concrete gloves, provide! Will cure to a flexible and elastic consistency necessary to re-apply multiple times if has... Hardens or sinks into the floor cures slowly uneven floor more level, before installing flooring! From inhalation by putting on your face mask, gloves, and the... Standard application rates and methods available for Light, Medium and heavy traffic, installing! Been used in bridges and even on pre-cast sections pouring fresh concrete over the existing concrete floors decks! To the old concrete to prevent it from absorbing moisture from the concrete hardens sinks... Liquid self levelling compound is very hard, very much like cement self-levelling is!