I'm new to this and didn't select reply before. Category: How To Guides. of the adhesive, screed and waterproofing compounds onto the surface. • When mixed with water, suitable for ceramic tile, quarry, pavers and saltillo tile over cementitious surfaces. Asbestos composites can be toilet cisterns and seats, window sills. What is screed and what is it used for in wood flooring installation? Screed is a term used to describe the finish that is put on a concrete floor to make it level and stable. Floor leveler is usually latex-based cement. #3. Selection and Installation of Ceramic. Reply to londonchap81. When applied over well-prepared ceramic tiles, it ensures a tenacious grip, minimizing potential issues related to delamination or detachment. flooring bloke New Member. they will 99% of. In that case, first of all, you need to take out the old vinyl tile and then apply self-leveling concrete. If you just want a no-nonsense mountain bike at an attractive price point, the Canyon Neuron AL 6 is a very good answer. uk. Floor levelling compound is also known as self-levelling compound. kitchen floor on concrete with ceramic tiles to be fitted on top. One of those options is a new layer of ceramic tile. 2-2012 – Waterproofing membranes for external above-ground use – Part 2: Design and installation B. 966 289 0. Not all primers cure the bitumen i would recomend a 131 primer before u laytex. Start at a broken tile or between tiles where the grout has loosened. Used for: levelling uneven subfloors, internally and externally, prior to laying ceramic tiles, thermoplastic tiles, lino, wood block flooring, or carpet. Mix 1 part water to 1 part Prime & Bind. Thicknesses of 1/4 inch to 3/8 inch are typical (6 to 10. a screed should be used prior to fitting any amtico or LVT (luxury vinyl tile) flooring. 4 Step 4: Thin Layer of Thin-Set: 6. Table 4. Ceramic tile is a building material made from clay that has been molded into tiles and fired to create a hard surface. The first thing to consider is the condition of your ceramic tiles. 5:25 AM. you will need to mix x1 bag of powder & x1 bottle of liquid per 5 mtr sq. 5 Ltr. The example of bumps (OP's problem) of one quarter inch maximum, should prove no problem needing levelling (for flat/smooth). What's the best latex / screed to cover ceramic tiles. As it might sound, a bonded screed is applied directly to the. Arditex NA is a premium latex screed. For wet areas such as. Peter Newman Flooring. 1 Add a decoupling mat to the substrate. Coverage: Approx 6 m at 3 mm thickness. laying lino/tiles over existing kitchen floor. Use a large carpenter's level to identify low areas of the floor. SR1 3mm. screed or topping. Superior general purpose Cementitious Tile. 4. 0. 0mm Protein (casein) free Mapei MAPEGUARD UM 35 can be installed over the top of a screed using a suitable Mapei adhesive such as KERAQUICK S1Mapei or Mapei ULTRALITE RAPID FLEX S1, for waterproofing and antifracture properties. On absorbent surfaces, such as cement and sand screeds, it may be necessary to damp down the surface with water before applying ARDITEX NA ® , to help reduce suction and pinholes. Any. Please help !!! I've had a 4mm-5mm latex screed laid using mapei renovation screed as I was advised this was the best option for a final floor finish as I was only left with about 7-8mm to work with as a microcement floor I had laid had gone wrong. application of an impermeable layer beneath tile and bedding to prevent water penetration into. Asbestos floor tiles were once a popular choice for flooring, and you will often find old asbestos floor tiles hidden under carpets. bournemouth Super Moderator. Product calculators. In this video I show how to self level a floor using s. 4 hours and ceramic tiles after 3 hours ¥ Suitable for use over old adhesive residues including bitumen ¥ Moisture tolerant - can be used below. Step 5 – Measure & Draw a Diagram. 24 Oct 2014. Check the entire slab for low spots by laying a straight 10-ft. 5 Step 5: Comb Gently: 6. 16 Aug 2013. Remove any broken pieces. 2. To be confident you’re starting with a flat, smooth surface, you should render the walls and screed the base. A self levelling compound is your answer, cost about £12-£18 pounds for 25kg bags, float over the surface using a flat trowel in an even motion much like spreading tile addy. According to the industry standard for ceramic tiles with a length greater than 15 inches, the variation in flatness should not be greater than 1/8th of an inch in 10 feet. b. Pumped anhydrite floor screeds are not much dearer than ready-mix sand/cement, costing around £25/m3 (laid. 2. Be careful of latex compounds that say they can go over ceramics with no primer. Laitance must be removed by sanding using a rotary floor sanding machine and this should be carried out between 7 and 10 days after the screed has been poured. Latermix Cem Classic and Maxi are no fine screeds based on expanded clay LWA and are quick drying even in high depth. As a result, it is not advisable to screed over asbestos floor tiles. I asked a contractor who happened to be in my company and he say the same thing too. Line walls and pillars with compressible material. Place the mixed product onto the area to be ‘screeded’ and screed to the desired thickness and plane using an appropriate straight-edge. nArdex Arditex NA self levelling screed is suitable for use over most substrates and adhesive residues. We have been advised to sort the floor out and latex screed was mentioned. 1. The correct way to this job would be to lift all the floor tiles, lay marine plyboard down and secure it with screws. UltraFloor Prime IT Multi-surface Primer is a moisture tolerant, water based acrylic primer, sealer and bonding aid, suitable for porous and non-porous substrates. For the installation of most types of ceramic tiles in interior and sheltered exterior locations. Fold the sheets up 10 cm (3. Make sure each area is a manageable size to avoid any issues. commences. maul. Important: Nothing should cover isolation joints or fill expansion joints except caulk. Nonetheless, as simple as this process might sound, there is a lot more to. SikaCeram® StarGrout Epoxy based grout for joints from 1 to 15 mm width. Screwfix Select. Alternatively, another option is to strengthen the substrate with either a layer of floor screed or by overboarding with plywood/tile backer board, and then using an. Suitable Application. Hi, You can lay the carpet directly over the bitumen. BAL make their own, as does EVERBUILD and Cementone. If using porcelain tiles, ensure adhesive choice is suitable for. pnfl. the concrete or sand/cement screed should be confirmed dry by. Image caption- S 15 C polymer adhesive used for slurry consistency. 322. The matt sits on top of insulation boards (10mm), which in turn sits on top of a concrete floor). Step 4. #6. 1. Before laying self levelling screed, its suitability needs to be determined. I would recommend screeding it because it would encapsulate the tiles but also give you a perfect surface for whatever flooring you decide on in the future. co. BS8204 Part1. Products for Ceramics and Stone Materials. 2-m straightedge laid in contact with the screed. Funnily enough Celotex do say you can float ply over their insulation boards and tile onto it, but they seem to assume that ply comes perfectly flat and don't have any recommendations as to how to get it all nice and rigid. In 1986, a Field Report of the Ceramic Tile Institute of America (86-5-1) titled “Installing Ceramic Veneers with Latex Modified Mortar & Grouts” used the term “Latex Leaching. Work the chisel between the tiles and the concrete, hammering them up with a 2-lb. Latex Floor Screed Thickness. There are vinyls which let your floor breathe like Altro expresslay but as you have already got your vinyl then one way of doing it to be safe from raising moisture is -. MAPEI recommends adding 5% to 10% in overage to ensure. Such products may still require 12-24 hours to dry our completely (depending on thickness). bournemouth Super Moderator. A38 is an engineered screed system based on a specialised cement powder and separate sand-aggregate mix. This will provide a dense surface to tile onto and will aid drying. There are two types of screeds - Bonded and Unbonded. 2-m straightedge laid in contact with the screed. 2mm to 3mm latex screed must be installed before any sheet or tile floor covering is installed. 2×4 on edge; any areas where the gap between the slab and the 2×4 is wider than 1/8 in. Use before application of polymer-modified mortars over properly prepared sound, stable and nonabsorbent substrates including ceramic tile, natural-stone floors, glass tile, cement terrazzo, cement-based agglomerates, glazed cement masonry units, VCT, rigid fiberglass, well-bonded old cutback adhesive, floor-covering adhesive residue, 13 Aug 2020. Maximum gap measured with a slip gauge. . used with confidence over almost all subfloors without priming, including ceramic tiles, bitumen and flooring grade plywood. The advantage of latex screed is that it can be laid to a thin 3-40mm depth and sharp sand can be added for increased thickness. CAC FLOORING. Under ‘wet’ consistency toppings/overlays; 4. 1 Sand-cement screeds should generally incorporate a latex additive (such as Planicrete). Unit Size Available: 20kg. Floating engineered wood is ok. Carolann's carpets. Wickes sell 'Setcrete Floor Leveling Primer' , which seal porous, dusty surfaces prior to pouring the levelling compound. If you're laying Karndean over existing flooring, be sure it is properly prepared. Can be used with underfloor heating systems. I've just laid a latex screed over electric matt underfloor heating (about 8-10 mm). Screed: 20 mm over 3 m . Lee Allen New Member. 211 POWDER is a cement-based powder designed for use with various latex admixtures to produce a high performing smoothing compound or high strength adhesive for ceramic tile and stone. oogzy Member. if its in screed then you'll be fine and won't damage it, if its over the screed wire or mat then you'd be lucky to be able to get it up without damaging it. Apply the Bonding Primer. If the existing concrete is dirty you will have to use some self-levelling compound which includes latex. Use clean water and a mop to wipe the floor (remove the detergent residue). Textiles can be found in fuse boxes behind the actual fuse. 4. footprints and trowel marks. it could easily be up and down by up to 15mm. GB Carpets. Apply only a thin coat to avoid dripping. 105 mm. Clean the Floor. I did end up hacking up the tiles, the self-levelling compound came up too! My builder refused to take any responsibility. A selection of acrylic, synthetic resin and SBR primers. BASF, the leading latex supplier in waterproofing industry, provides comprehensive solutions for cementitious waterproofing, mastic waterproofing. 3. 8 Mpa). laminate is ok. Screeds / Mortar Beds . i try to keep up on new products and a company called ardex uk make a latex based levelling compound called (arditex na)that goes straight over bitumen to seal it. Floor leveler is usually latex-based cement. Designed for use with various latex admixtures to produce a high strength smoothing compound or adhesive for ceramic tile and stone that meets and exceeds the requirements international standards. Like 4. TDS 192 . Screeds to adhesive fixed rigid tile applied floorings: BS5385 Part3. 3. Why Choose Latex Screed for Overlaying on Ceramic Tiles: Exceptional Adhesion: Latex screed is known for its excellent bonding capabilities. 4237 RAPID Latex Additive is a specially designed latex additive for use with 211 to make high strength latex thin bed and medium bed adhesive up to 15 mm. There are two types of screeds - Bonded and Unbonded. Another tradesman said they could do it without screeding because they are. Rich mixed up a 5 gallon bucket according to the directions and let it slake for 5 minutes before mixing it again. Color: Gray. Use painter’s tape in combination with a drop cloth or plastic sheeting to protect nearby surfaces from errant paint. The floor needs to be. Only if you dont like HDB tiles and want to use your own tiles then no need for screeding. Renovation property: £60 to £85 per square metre. but you should always prime the subfloor first, I believe you need to give the bitumen a slurry coat first. Screwfix customers rate this product 4. SR2 5mm. Use before application of polymer-modified mortars over properly prepared sound, stable and nonabsorbent substrates including ceramic tile, natural-stone floors, glass tile, cement terrazzo, cement-based. Pour the mixture. Maximum gap measured with a slip gauge. material system used as a base over which the ceramic tile is to be fixed. 3m x 4. Just make sure the tiles are solid. Arditex NA 25Kg Subfloor Two Part Self Levelling Compound is a self-smoothing, protein free, latex levelling compound with improved flow and excellent adhesion, flexibility and moisture resistance. On absorbent surfaces, such as cement and sand screeds, it may be necessary to damp down the surface with water before applying ARDITEX NA ® , to help reduce suction and pinholes. Yes you can latex over ceramic tiles as long as the tiles have been installed to a good standard and you have no damp plus you have to use floor primer. Cheers vman, Mar 3, 2012 #1. Northampton •. 246: 10 mm thick porcelain floor tiles + adhesive: 0. USE To level uneven internal subfloors to provide a smooth surface. Floor Tile Gray Thinset Tile Mortar (50-lb) Model # 1011236. use f. Now mark, with a pencil or felt tip, the corner of tile 1, where it meets tiles 11, 12 and 13 onto the floor . Self-leveling underlayment is a great choice under any tiled floor, but it’s the absolute best choice when installing tile over an in-floor heating system. 2 Using a backer board or new drywall for uneven walls: 6 Pros and Cons of Tiling Over Existing Tile. Pry the tile section using the chisel to remove the tile altogether and proceed to the next till the job is done. USES Davco 168 is designed for installation of dimensional stone and ceramic tiles over a wide variety of sub-strates. Over ceramic tile:It’s recommended to use a primer when tiling on a wooden floor, to ensure the best possible surface for the adhesive to bond with. Prepping the Substrate for Tile Recap. The purpose of a screed is to give a smooth and level floor surface on which to lay your chosen floor finish that could be vinyl, tiles, natural stone, carpet, parquet, wood and so on. If another coat is needed, apply at right angles to the first coat. That way if your kick boards are already fitted to the height of the ceramics there is no need to replace them. Be careful of latex compounds that say they can go over ceramics with no primer. ARDEX Screeds will pass a BRE Screed test in as little as 6 hours, rather than 2 weeks with conventional screeds. Screeding over cracked tiles can cause pressure over time on the screed and begin to break it up in the affected areas underneath. Wickes have a very good product, Latex self levelling screed, goes hard in about and hour or two and only need to leave it 24hours before applying new floor. USES Davco DW 1 may be used as a mortar additive for fixing. For ceramic tiles up to 30cm x 30cm or porcelain tiles up to 10cm x 10cm you’ll only need a low grip adhesive. If your tiles are loose, cracked, or broken, you will need to repair or replace them before applying self-levelling. Vinyl Flooring Options. USES Davco 168 is designed for installation of dimensional stone and ceramic tiles over a wide variety of sub-strates. 30758. 2. 1. Related Documents: LATICRETE Drawing ES-W244(E), ES-W244(I) LATICRETE Drawing ES-F144 Ceramic Tile and Stone Over Cementitious Backer Units TDS126 Cement Backer Units Over Lightweight Steel. Ready to tile now, use good quality tile adhesive and grout, powdered (bagged) materials are best. Leak detection - The use of fugitive dyes such as food coloring or proprietary leak detection products in conjunction with scuba diving equipment are an effective method to trace any leakage detected during flood testing. Tiles greater than 400 x 400 mm should be back-buttered. Next, with a brush or roller, apply high-gloss or semi-gloss latex. Screeding a floor is the simple act of applying a well blended mixture of Ordinary Portland Cement with graded agregates and water to a floor base, in order to form a sturdy sub-floor that is capable of taking on the final floor finish or act as a final wearing surface. Post reply. uk. Electric underfloor heating is compatible with a surprising number of floor coverings from carpet and wood to polished concrete. BUY NOW: US$33. Answered 17th Jan 2012. 254 PLATINUM™, 257 Titanium or MULTIMAX™ LITE). plaster, cement render, fibre cement sheet, plasterboard. However the tiler should apply a Primer before screeding such as. Alternatively, you can use a flat shovel or a floor scraper. Using the diagram below, we would dry-lay tiles 1,7,8 etc and space the row out so that tiles 12 and 39 were roughly the same size. Ceramic tile is a building material made from clay that has been molded into tiles and. Existing Ceramic, Porcelain and Natural Stone Tiles * Flooring Grade Asphalt & Bitumen* Anhydrite Screeds. If the tiles are in good condition, with no cracks or chips, then screeding over them should be possible. Granolithic screed - A specialised type of sand-cement + aggregate screed, where the sand is replaced by a sand-gravel mix with a size range of typically 0-4mm in most usages. The tiles will also stick to ceramic tiles if they are untextured. 4. Country Availability. It is also very difficult, if not impossible, to remove screed from asbestos tiles without damaging the tiles and generating even more dust. Whilst it is still poured at a shallower depth than traditional sand and cement screed, the minimum 35mm pour is. ARDEX Abacrete. Floor leveler is usually latex-based cement. a solution that binds, regulates and fosters air flow in the base you’re going to apply. Use painter’s tape in combination with a drop cloth or plastic sheeting to protect nearby surfaces from errant paint. Ceramic tiles: 3-5 days : 50-70mm: Carpet: 6. Roll the primer onto the tile, being careful not to press too hard on the roller. Tile keeps getting bigger and bigger. 5 mm must be completely compensated. With the existing tiles removed you're removing the risk of the screed failing. Uplift existing tiles and latex screed subfloor, like another fitter said use Arditex NA that way there is no need to prime subfloor first, Saving you drying time and of course money. idiots guide to laying latex self levelling screed Discussion in ' Builders' Talk ' started by camo, Mar 16, 2007 . commences. Before laying ceramic tiles or natural stone onto a cement/sand screed, the screed should be covered and cured for 7 days followed by a further 14 days of continual air drying; a longer period. As the title says, looking for a good primer and screed to go over quite shiny ceramic tiles. In this case the screed or topping is separated from the floor by insulation boards or an impervious membrane. Rich. Tile panel movement joints should be created at maximum 3 meter centres in both directions, as well as around the perimeter of the floor. 2. N. 4 Use a screed to level the floor; a screed is usually a long and very straight board or level that will move the excess floor leveler to lower levels and will help you level the floor. Suitable for fixing porcelain tiles and natural stone in interior locations to solid stable substrates such as concrete or sand: cement screed in small to medium sized installations. Screed is commonly set underneath timber, carpet, resin coating, natural stone, tile and vinyl flooring. If you have ceramic tile that has radiant heating, it is advised you opt towards floating vinyl planks over glued down tiles. Go to product. #2. Wood Floor Hence they need to screed, because dont have ppl who put 30mm of cement before laying tiles. Mixing and application of Nitotile GP shall be as follows; 20kg of Nitotile GP shall be mixed with 4. Now starts the fun part. Over time, an increase in stress build-up will make the tiles more likely to pop. Re: Advice for self-levelling over old tile adhesive, using Wickes la SBR is a liquid bonding agent. 2. hope this helps . Remember these tips prior to starting work. In this concrete floor video, industry expert Bob Harris shows the steps for installing a new concrete floor over an existing tile floor. Rich mixed up a 5 gallon bucket according to the directions and let it slake for 5 minutes before mixing it again. You can achieve tilling over a slate can with an experienced tiller. thank you very much for the clarification. Latex levelling screed levels out uneven substrates leave a smooth surface to bond to. Latex floor screed is the ideal solution for levelling uneven floors and preparing surfaces for the application of floor coverings such as carpet, vinyl and ceramic floor tiles. FREE next day delivery available, free collection in. To properly install a new tile surface, you should remove the existing vinyl tile, grind down as much of the old tile adhesive as possible, and then apply the leveling compound to smooth out the surface for the new tile. Screeding a floor and setting levels for the required falls is not something for a first time DIY tiler. 1. Applying the primer: To apply the primer, use can either use a paint brush or a paint sprayer. The function of a primer is to prepare the surface and increase the bond. TAL BOND should be used as a total water replacement in the adhesive and grout mix. The slurry is usually just 1 mm – 2 mm thick. 5:25 AM. 7 kg. For instance, if there is a lump on the wooden floor, you can use this option. I asked a contractor who happened to be in my company and he say the same thing too. Discuss Advice for self-levelling over old tile adhesive, using Wickes latex? in the Tile Adhesive area at TilersForums. Rip the whole existing lino up before I put the kitchen units in, put the units directly on the quarry tiles, and then get the lino put in afterwards - I have no idea what the state of the quarry tiles is currently. See, if it were me, and fitting ply over it, I would fix a 16mm batten all the way along the low edge, fill the lot with cement mortar. There are many advantages in placing vinyl flooring over existing flooring, such as added insulation, desired thickness and with the use of transition strips you can avoid any unnecessary disasters with the installation. Estimated Cost: $75 to $100. Ensure the floor is fully dry - the residual moisture level should be less than 0. Around £12 I remember but will probably be way too much quantity for your small area but Abstract. Used to smooth and level floors in preparation for laying a wide range of floor coverings on top which is important as this base layer will effect the overall finish you get from the project. JC Flooring Professional Carpet Fitting Service. [According to the Tile Council of North America's Handbook for Ceramic, Glass, and Stone Tile Installation, this drying period can fluctuate from 14 days to over 60 days, depending on the geographic location, the climatic conditions,. Scotts Plumbing & Property Maintenance Limited. Tiles should be installed using a latex modified adhesive system, i. The tiler can then latex or screed over the DPM. Reply to Kitchen Floor tiling on Latex Self Levelling Compound in the Floor Tiles area at TilersForums. 8. Peter Newman Flooring. You can paint over any blemishes or missed spots that the painter's tape covered up, but be sure to let them dry. Ceramic tile / stone adhesive - floor and wall thin set mortar DESCRIPTION Davco 168 is a cement-based, thin or medium bed ad-hesive, suitable for fixing ceramic tiles onto walls and floors, dry or wet interior or exterior areas. over almost all subfloors without priming, including ceramic tiles, bitumen and flooring grade plywood. SR2 5mm. Builders often refer to latex screed as a ‘levelling screed’ for this reason. Installation of Ceramic Tile . Fiona_cooks New Member. 1 Using a Tile Leveling System for uneven walls: 5. 50 per square metre. 8 Repair Concrete Floor Before Tiling, some helpful tips. As it might sound, a bonded screed is applied directly to the. Once traffic starts walking over it, those stresses start moving the tiles and eventually they pop off the floor and get. Hi, quite a common problem tbh. The surface should be mechanically prepared by either shot blasting or grinding. 1-2007 (Ceramic Tiles-Part 1: Guide to the installation of ceramic tiles) gives guidance on the types of concrete surface finish applicable to various tile fixing methods. The price is usually around $14-$28 SGD per square foot; Screeding cement is a simple process that can be done at home. Poor Workmanship. For the superior results, use a LATICRETE® Latex Fortified Thin-set mortar system (e. In my haste to get started, I ripped up the old carpet and underlay finding thin tiles that easily pried off the floor. Next, with a brush or roller, apply high-gloss or semi-gloss latex. Can be used in bonded and unbonded applications. Step 4: Mix Mortar. U then primer the floor ready for latexing. Installation of Heated Screeds and Substrates for. Add message. DON’T stretch the peel-and-stick tile too much when installing. Apply as a bonded, unbonded or floating screed. FAQ. AS 3740-2010 3. (with added latex powder), requiring only the addition of water. high performance thin-bed adhesive for installing a wide range of tiles and stone including low absorption ceramic tile, porcelain tile, natural and manufactured stone using thin-set. MAPEI recommends adding 5% to 10% in overage to ensure. Self levelling screed levels out uneven substrates leaving a smooth flat surface to bond to. Continue until the entire floor is covered, smoothed, and rollered. Start at a broken tile or between tiles where the grout has loosened. A levelled surface is especially important using large format tiles. Reply to londonchap81. Use latex screed. Use a level to check the floor. None of those apply to wall tiles, and the reduced weight of a thinner tile makes for easier installation. Latex floor screed thickness varies from product to product, however as a general guideline please find the depths below: Minimum depths are usually 2-3mm, however there are some products that can go down to “featheredge”. Fix or flatten the surface so it is tile ready. Your best option now is to take up the ceramic tiles, adhesives and grout then fasten down the 6mm plywood mentioned above. Need to make sure they are aware its not the best way. The short answer is yes, self-levelling compound can be used over ceramic tiles, but there are a few important things to consider before starting your project. This has to be absolutely smooth for it to work, though. This time I mixed more screed and poured it over the area in question. Back-buttering is not necessary. ) Apply with a clean brush, sponge or roller and then leave to dry. PRIMINGDescription. Step 3 – Remove Debris. You can test the floor dryness with a gloved. Application examples:The topic ‘Asbestos floor tiles’ is closed to new replies. The thickness of the screed allows it to take up normal variations in flatness and levelness of the base on which it is laid. 6 Step 6: Do as Planned: 6. 3 Jul 2007. Put simply, a screed is a hard coating flooring surface similar to concrete. hi. Immediately trowel back over the skim coat, using the notched side of the trowel to create a pattern of ridges and valleys in the wet adhesive. I’m here to talk about latex floor screed. Using the notched side of the trowel, comb the mortar to produce an even surface. hand maul. Tap the tiles with a rubber mallet as you lay them and then roll the completed floor with a heavy floor roller (rent) to bond the adhesive uniformly. Vinyl planks represent perhaps the best option for installation over ceramic tile. Flowable liquid floor screed suitable for applying up to a depth of 5-50mm onto: Floors with underfloor heating or under tile warming; Cement; Concrete slabs; Pre-cast elements; Wooden flooring; Existing ceramic tiles; Existing rigid plastic tiles; Floating floors (e. In most rooms, the tiles are still in place, in varying conditions. Contents [ hide] 1 Tiling over a waterproofing membrane, some helpful tips: 2 Decoupling mat floor tiling, some helpful tips: 2. #1 Hi All, I have a job to do for a contractor and they have told me to self level over the top of existing floor tiles and then lay the new ceramics. Making sure the floor is level is vital when laying vinyl tiles. I have an early 1970s bungalow with concrete floor. 4 Use a screed to level the floor; a screed is usually a long and very straight board or level that will move the excess floor leveler to lower levels and will help you level the floor. Apply a coat of surface liquid DPM to the tiles like Ardex DPM 1c or stopgap F77 then prime and screed. 9") and tape them together. Ardex Arditex NA is a smoothing compound and is one of the sub-floor preparation products. 2 litres of water with a slow speed drill. Use a 2×4 to screed the floor and completely. It can be confusing because many leveling compounds are marked as useable on a variety of surfaces, including linoleum and vinyl. Please help !!! I've had a 4mm-5mm latex screed laid using mapei renovation screed as I was advised this was the best option for a final floor finish as I was only left with about 7-8mm to work with as a microcement floor I had laid had gone wrong. So if you allow 3mm for the latex screed and 3mm for the altro you would be looking at a raise in the floor by around 6mm. To flash the floor, the guys are using Kerabond mortar with Keralastic latex additive because it bonds so well.