However, a few superficial cracks developed across the screed surface. Coverages provided are for estimating purposes only. MAPEI recommends adding 5% to 10% in overage to ensure. Www. g. For the installation of most types of ceramic tiles in interior and sheltered exterior locations. to acheive a smooth, flat floor, once dried. Important: Nothing should cover isolation joints or fill expansion joints except caulk. In wet areas, Nitotile GP from m/s Fosroc shall be used as ceramic tile adhesive. Old fire blankets and heat resistant gloves can also be made out of asbestos textiles. High Pressure Water Cleaning - 1,000 psi (6. Mix 1 part water to 1 part Prime & Bind. The contractor applied a layer of traditional cement-sand screed to a depth of 65mm and told me to wait 110 days for the screed to dry before calling the tiler. Estimated Cost: $75 to $100. Below the tape there will be no paint, so your ceramic tiles will now have a perfect border. Discard any material that has exceeded the pot life or working time of the product. Membrane. What's the best latex / screed to cover ceramic tiles Andy O'Hara Peter Newman Flooring Www. Maximum gap measured with a slip gauge. ARDEX Abacrete. When the old floor material is a still strong ceramic tile surface though, you can place the new covering over the tiles as long as you create a smooth surface beforehand. Can be used in bonded and unbonded applications. Only if you dont like HDB tiles and want to use your own tiles then no need for screeding. insulation board) Bitumen residue* * Best practice is to remove all bitumen. We would not advise that you use ceramic. Packaging: 25kg bags. tanking. you might just have a low spot along the old wall where the concrete meets the wooden floor. With a floor leveling compound, the smooth subsurface is easy to create. According to British Standards, any deviations should not exceed 3mm when measured under a 2m straight edge. Tiles greater than 400 x 400 mm should be back-buttered. Screeds are typically bonded onto most concrete. Liquid Screed is either a cement-based compound or anhydrite (gypsum based). Too much extra will probably make it useless. In most rooms, the tiles are still in place, in varying conditions. 25 quarts (5 L) water: 25 lbs. Coverages provided are for estimating purposes only. It works like mortar but doesn’t need grouting because it contains no sand or gravel. Country. After measuring the surface area for the backsplash, wall, or floor, planning out the exact layout of the tiles, and cutting them. Use a 3/4- or 1-in. 2 Check for hollow tiles. 2. ARDEX FEATHER FINISH is ideal for patching and smoothing minor surface damage to levelling and smoothing compounds i. Application examples:The topic ‘Asbestos floor tiles’ is closed to new replies. 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. Once broken up into sections you can more easily ensure your floor will be evenly screeded. The latex also allows the floor a certain amount of flex over time so this helps to prevent cracking and shrinkage. However, I contacted a specialist anyway, and we are looking at £400 + VAT to remove the tiles. You can test the floor dryness with a gloved. . My kitchen floor is part bare concrete and part quarry tile with cork tiles stuck on top. If a dipping grade adhesive is not wanted, then the trowel applied Styccobond B95 adhesive can be used instead. My kitchen floor is part bare concrete and part quarry tile with cork tiles stuck on top. 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. If so your marley tiles still need to be level or your new floor will bounce, creak and sound hollow etc. mortar. 2. All that’s required is spreading the compound over the prepared tiles. I was charged £2,600 and although I knew this was expensive I put. The asphalt content lends mastic its black color. 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. 7 kg. Examine the grout lines. Apply a screed on the concrete. Place the mixed product onto the area to be ‘screeded’ and screed to the desired thickness and plane using an appropriate straight-edge. A chipboard floor will move when walked upon. A. commences. Self levelling compound sold in 20kgs bags can be used to raise up to 50mm. Most projects will have one of three different types of substrate as follows: Construction TypesPalace Trade-Flex, Multi-Flex or Easi-Flex adhesives are all recommended for fixing over a prepared anhydrite screed and the use of a pourable thick bed adhesive with built-in polymer such as Palace Flexi-Set Thick Bed will be advantageous when fixing large format (600mm x 600mm) floor tiles. I am hoping to cover it all with a vinyl sheet. 4 hours and ceramic tiles after 3 hours ¥ Suitable for use over old adhesive residues including bitumen ¥ Moisture tolerant - can be used below. Tile keeps getting bigger and bigger. Over plastic, semi-dry consistency traditional mortar beds (min 20mm thick) before beating in pavers and ceramic or stone tile in cold climate conditions. 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. Installing a damp proof underlay for concrete floors. It is typically composed of. Floor covering is a term to generically describe any finish material applied over a floor structure to provide a walking surface. Before applying a floor covering, Setcrete Latex should be left uncovered for 24 hours when applied at 2-5mm thickness. DIYDave. Rich mixed up a 5 gallon bucket according to the directions and let it slake for 5 minutes before mixing it again. The next part of the process entails purchasing your vinyl flooring and adhesive product. 4 - Ceramic tile detached from a crumbly screed. Most in screed UFH is water based and pumped so theres a very good changes its over screed. The next membrane width is rolled out so that the edges of the. If nothing comes off, it’s fine to tile over. 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. We have thought about having a. Mix detergent with warm water. All depends how big is your kitchen. There are four variant of TILEFIXO for different application. Before tilling, ensure that. Not all primers cure the bitumen i would recomend a 131 primer before u laytex. 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. not a water based mix. 1 Tiling over existing tiles. With a floor leveling compound, the smooth subsurface is easy to create. Decoupling mats are also obligatory when laying tiles on an existing wooden floor. Roll the primer onto the tile, being careful not to press too hard on the roller. It varies by manufacturer but it pretty much seems to average 4. hand maul. Waterproofing applications are important in housings, commercial and industrial buildings to protect against water intrusion in bathrooms, kitchens, balconies, swimming pools, basements, etc. 3. 8 to 5. bournemouth Super Moderator. MAPEI Technical Notebook(s): 1. Before laying self levelling screed, its suitability needs to be determined. 24 Oct 2014. hand maul. Cheers vman, Mar 3, 2012 #1. 3 from AS3958. A self-leveling compound is. 5%. Tile adhesive is often used on large wall tiles to ensure they stay put once installed. 1. (screed and renders). wowfudge · 03/08/2017 14:00. 6 mm/m) can contribute to problems. There are three main types of screed – bonded, unbonded and floating. 6N / mm2ARDITEX NA provides excellent adhesion to almost all substrates without the need to prime, including flooring-grade plywood, ceramic tiles, steel, and even over old bitumen adhesive residue. Pro Flow can be applied from depths of 2 – 12mm in one application. Issues to be taken into account include: installation. stoneyboy. Your best option now is to take up the ceramic tiles, adhesives and grout then fasten down the 6mm plywood mentioned above. Floating engineered wood is ok. The tiles have been removed in some rooms, leaving the bitumen, probably <1mm thick, and not sticky. Reply to londonchap81. 5 litres per 20kg bag of screed. 2. Decorative floor coverings can be installed after 4 hours and ceramic tiles can be applied after 3 hours. Thoroughly sweep and vacuum the entire floor. Commissioning the underfloor heating before tiling commenced. Color: Gray. MoreEasy and affordable, the three-step paint process goes right over laminate, cultured marble or ceramic tile, resulting in automotive-grade durability from safe, water-based materials. Floating engineered wood is ok. quarry, ceramic and most natural stone tiles* over interior or exterior concrete and masonry floor and wall surfaces. Primers. USES Davco 168 is designed for installation of dimensional stone and ceramic tiles over a wide variety of sub-strates. Ceramic tiles can be laid over virtually any level, firm, rigid surface that is clean, dry and structurally able to support the weight of the tiles; e. With the existing tiles removed you're removing the risk of the screed failing. 1-2007. USE To level uneven internal subfloors to provide a smooth surface. June 28, 2022. This has to be absolutely smooth for it to work, though. If you're laying Karndean over existing flooring, be sure it is properly prepared. Before you tackle how to tile an uneven floor, it’s really important to use a good primer i. 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. That way if your kick boards are already fitted to the height of the ceramics there is no need to replace them. Where a 12×12 (30cm x 30cm) used to be big now it’s quite common to deal with wood-look tile that is 48 inches long (120cm) and installed in a random offset pattern. Now time to ask the ID who say no need screeding why they say so. Andy O'Hara. latex floor screed levels out uneven substrates leave a smooth surface to bond to. 75, The Home Depot. Why Choose Latex Screed for Overlaying on Ceramic Tiles: Exceptional Adhesion: Latex screed is known for its excellent bonding capabilities. Peter Newman Flooring. either way, as the other posts say, you would be better screeding which will also take out any irregularities in the concrete. If you are applying paint in a high-traffic area or an area with a lot of moisture, a protective coating is also recommended. Latex Floor Screed Thickness. Allowing the UFH system to cool down for at least 48 hours before tiling commences. With the application of DITRA matting, tile coverings. Glazed ceramic tiles are commonly used for floors, walls, countertops, and showers. Ultraplan Renovation Screed 3240 is suitable where good resistance to loads is required, also for castor wheel traffic and underfloor and undertile heating systems. Wickes sell 'Setcrete Floor Leveling Primer' , which seal porous, dusty surfaces prior to pouring the levelling compound. I did end up hacking up the tiles, the self-levelling compound came up too! My builder refused to take any responsibility. Use these tools to calculate the approximate amount and estimated cost of products needed to complete your project. For the superior results, use a LATICRETE® Latex Fortified Thin-set mortar system (e. plaster, cement render, fibre cement sheet, plasterboard. 1). Mix a small batch of thick screed and in-fill where the tiles are missing. Be careful of latex compounds that say they can go over ceramics with no primer. As well as regular upkeep, wood flooring often needs annual sanding and re-sealing to maintain its quality. Flooring. The maximum screed thickness when using sand and cement screed, as such there isn’t one, as long as the screed has been compacted in layers then 100, 200, 300mm is possible. 0. 2. Where it differs from other smoothing products is that there is a latex additive. For ceramic tiles up to 30cm x 30cm or porcelain tiles up to 10cm x 10cm you’ll only need a low grip adhesive. Back-buttering is not necessary. A self-leveling compound can be used over vinyl tile. Walls: 4 mm in 2 m. The price is usually around $14-$28 SGD per square foot; Screeding cement is a simple process that can be done at home. uk. It pours wet and then dries to create a solid flat surface that is highly durable. We get loads of sub floored Ashphalted as it’s great for a Dpm and building the levels up from parquet wood being taken up. Only if you dont like HDB tiles and want to use your own tiles then no need for screeding. There are a few latex based screeds which claim to be suitable, FBall 1200 and Ardex NA are 2 such but it isn't the screed that is the major problem, if the adhesive fails on the Marley tile then the screed fails so it is always good practice to have them removed, the sub-floor rh% tested then be able to advise on prep work. hope this helps . 3. simple answer is no, this is mainly down to the adhesive failing underneath. Can be pumped for fast application. Thank you for your advice. Prepping the Substrate for Tile Recap. Remove cork tiles and then screed over concrete and remaining quarry tile/ cork. In this concrete floor video, industry expert Bob Harris shows the steps for installing a new concrete floor over an existing tile floor. Raspberry_Swirl Posts: 1,386 Forumite. Self levelling screedIn wet areas, Nitotile GP from m/s Fosroc shall be used as ceramic tile adhesive. As long as your floor is level (as in 'water level' as opposed to 'flat/smooth) then any minor bumps or pockets are trivial, and will be taken up by the level of adhesive. For more than 5mm it should be left for 48 hours Setcrete Latex is suitable to use over a wide range of absorbent sub floors which should first be coated with Setcrete Acrylic Primer diluted in a ratio of 1-part primer to 4. The first thing to consider is the condition of your ceramic tiles. C. The new flooring will be loose laid cushionfloor. “The majority of glazed and unglazed [ceramic] tiles have negligible moisture expansion, which does not contribute to tiling problems if tiles are correctly fixed (installed). Perfect for using over ceramics. Color: Gray. Concrete has a much coarser mixture than screed, consisting of larger, hard-core aggregates, which are the key element that gives it its durability and makes it strong and long lasting. Iam a floor layer with 25 five years experience. Compound. The level of residual humidity in a screed is measured using an electric or carbide hygrometer (Fig. Liquid Screed. The sudden expansion or contraction results in a lack of adhesion between the tiles and the screed. BS8204 Part1. I was charged £2,600 and although I knew this was expensive I put. So it is best not to use self-leveling concrete or compound over existing vinyl tile. 2. Actual jobsite coverage may vary according to such factors as job conditions and application methods. Tiles should be installed using a latex modified adhesive system, i. None of those apply to wall tiles, and the reduced weight of a thinner tile makes for easier installation. Secondly, screed over it with a self leveling compound, and let that dry. Any difference in levels at the doorway can be. Clean the Floor. The tiler can then latex or screed over the DPM. Making sure the floor is level is vital when laying vinyl tiles. but you should always prime the subfloor first, I believe you need to give the bitumen a slurry coat first. Self levelling screed levels out uneven substrates leaving a smooth flat surface to bond to. Every room was covered in thermoplastic ("Marley") tiles, attached with a thin layer of bituminous adhesive. As a result, bigger tiles require flatter floors. If you are installing where existing floors have been removed, check that there are no traces of previous adhesive residue. Now in addition to our subfloor preparations products, we offer a full range of patching systems, moisture control, concrete toppings, flooring adhesives and concrete repair. 1. Remove any broken. Pry the tile section using the chisel to remove the tile altogether and proceed to the next till the job is done. ceramics I don’t know. 322. They come in thicknesses ranging from 2 millimeters (about 1/16 inch) to 8. LATAPOXY® 310 Stone Adhesive. 5). If the ceramics are bonded firmly to the floor you could apply primer (P131) and latex over the top. When laying vinyl, ceramic tiles, carpet and other floor coverings. All these products are water-resistant and help to seal the surface against moisture. Over the backs of ceramic tile, stone or brick before placing concrete or mortar during fabrication of ‘negative’ cast panels. I want to install LVTs over. Electric underfloor heating is compatible with a surprising number of floor coverings from carpet and wood to polished concrete. 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. Ceramic, porcelain or stone tiles can be installed over the top of the installed membrane using a suitable Mapei tile adhesive. Then, dry-lay tiles 2 to 45, making sure that gaps 11 and 51 were even. Any. Thicker substrates require 2 days per mm. SikaCeram® StarGrout Epoxy based grout for joints from 1 to 15 mm width. 2-m straightedge laid in contact with the screed. You can then lay your new floor on top. Reply to Kitchen Floor tiling on Latex Self Levelling Compound in the. Resilient floorcoverings can be installed after just 4 hours and ceramic tiles in as little as 3 hours. 8. 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. SikaCeram®-260 StarFlex Deformable tile adhesive with lightweight fillers. The glaze can often act as bond breaker and is a difficult surface for anything to adhere to. Floating Floors. I wouldn`t attempt it yourself, or get a `Builder` handyman to do it, as it is very job specific, but once done, your damp will NEVER return. Both screed and concrete are referred to as being green during the period from. If the layer of screed is bad and the Tile is cut improperly, it will result in cracking in the long run. Such products may still require 12-24 hours to dry our completely (depending on thickness). How to Install Sheet Vinyl Flooring Over Tile. Latermix Cem Classic and Maxi are no fine screeds based on expanded clay LWA and are quick drying even in high depth. I must have a screw or nail loose under one of the tiles because it has cracked. screed. TAL BOND should be used as a total water replacement in the adhesive and grout mix. Ensure the floor is fully dry - the residual moisture level should be less than 0. By contrast, asphaltic cutback adhesive is an older type of mastic made with asphalt-based cement. Bonding Agent for Use with Sand/Cement Screeds and Renders. Fast Setting Screeds Allow a faster setting time to achieve foot traffic within a shorter period. 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. masonry chisel and a 2-lb. Supplies. ” In May 1989, Tile & Decorative Surfaces expanded on the issue, opining that “rain is one of the biggest contributors to the leaching problem. Installation of Ceramic Tile . To flash the floor, the guys are using Kerabond mortar with Keralastic latex additive because it bonds so well. However, the Quikrete High-Performance. AS3958. 1. Mixing and application of Nitotile GP shall be as follows; 20kg of Nitotile GP shall be mixed with 4. flooring bloke New Member. Ultra Floor - Prime IT - Multi-Surface Primer (MSP) - 5 Litre. When the old floor material is a still strong ceramic tile surface though, you can place the new covering over the tiles as long as you create a smooth surface beforehand. We get loads of sub floored Ashphalted as it’s great for a Dpm and building the levels up from parquet wood being taken up. Hi, You can lay the carpet directly over the bitumen. Hi, Our house was built in 1983 and we have a 7m x 3m front room/dining room and want to install Warmup electric underfloor heating with laminate. The first thing to. Step 2 – Sand Dried Mortar. they will 99% of the time be a very poor strength compound. If the tiles are in good condition, with no cracks or chips, then screeding over them should be possible. AS 3740-2021 – Waterproofing of domestic wet areas 3. 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. Scotts Plumbing & Property Maintenance Limited. Each DIY makeover kit covers 35 square feet of tile or countertop, takes around four hours to complete and dries in 16 hours. Working Time: 6 - 7 hrs. A. Apply the mixture to the floor, and use a floor brush to scrub the floors. Photo credit: Weber. Vinyl Flooring Options. Ordering and Purchasing. Answered 17th Jan 2012. When bonding directly to the substrate with a bonding agent or a primer the minimum is 1-2mm (feather edge) with smoothing compound. 5-6. Table 4. Hi Pete, I have the answer. I've had three lots of advice, to rip up the existing tiles and start from scratch, to screed over the tiles and lay the vinyl, or to ply over the tiles and lay the vinyl. A Prime (or a Prime Number) is any whole number that cannot be divided by any other number except itself and 1, without a remainder. 1 Ceramic tiles, porcelain tiles, and cement terrazzo must be firmly bonded, clean, and free of dust, dirt, oil, grease, paint, wax, sealer, soap, and any other substance that may prevent or reduce. TDS 192 . 5 millimeters (about 3/8 inch) and typically float over the subfloor. It can be applied over virtually any substrate such as old adhesive residues and ceramics. Lee Allen New Member. 8 Step 8: Grouting: 6. Total Time: 2 wks, 1 day - 2 wks, 2 days. Screeding over cracked tiles can cause pressure over time on the screed and begin to break it up in the affected areas underneath. We have been advised to sort the floor out and latex screed was mentioned. #2. 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. 1. DECORATIVE CONCRETE OVERLAY OVER EXISTING CERAMIC TILEOver-Eze stampable concrete overlay and resurfacer has proven itself on many residential and commercial. 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. Like 4. Vinyl planks represent perhaps the best option for installation over ceramic tile. 2. I've just laid a latex screed over electric matt underfloor heating (about 8-10 mm). 2. Traditional sand and cement such as a 1:4 ratio could be bonded at 40mm. Answered 20th Jul 2015. Use latex screed. Handyandy Screwfix Select. LVTs like Karndean Amtico Moduleo etc yes. Mortar screeds: Tiles can be installed on as soon as they are ready to bear weight as opposed to the usual 28 days of curing. If you just want a no-nonsense mountain bike at an attractive price point, the Canyon Neuron AL 6 is a very good answer. Because concrete has the potential to hit very high strengths, it is used across the construction industry for. LVT is warmer underfoot than tiles anyway so you’d probably not notice the difference that it will make for heat travelling, any cold spots will probably feel warmer too. The cured screed will have a layer of anhydrite screed laitance that will need to be removed after 2-6 days (dependent on brand of screed used). Not actually used it myself (yet) but looking to level my garage floor so done a little research. But even if large areas and/or large-format tiles are bonded, above-average stresses can occur overall. Self-leveling Properties: Ceramic tiles may have minor level. Step 1 – Fill Large Grout Lines. It is also very difficult, if not impossible, to remove screed from asbestos tiles without damaging the tiles and generating even more dust. screed over insulation. Jul 30, 2012 #1. Now mark, with a pencil or felt tip, the corner of tile 1, where it meets tiles 11, 12 and 13 onto the floor . For Indoor Use. 5m and need to be about 65mm thick. For bathroom wall tiles, it is important to take note of the material they are made from. not a water based mix. See notes on the use of Nicobond DPM One Coat membrane. 4. Floorcoverings can be installed after as little as 15 minutes. Prime and smoothing compound then any LvT. 3 Jul 2007. Get ideas for concr. Using chalk or a pencil, mark low and high points and check again for any ridges or depressions you. The reason that the additive is. In this video I show how to self level a floor using s. The system specified will depend on the room size and type, if fixed units are present, if a new floor base is being laid or what the existing sub floor is made of and the final floor covering. 3. Work the chisel between the tiles and the concrete, hammering them up with a 2-lb. 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. 2 / 17. Resilient floorcoverings can be installed after just 4 hours and ceramic tiles in as little as 3 hours. Rich. laying lino/tiles over existing kitchen floor. Use painter’s tape in combination with a drop cloth or plastic sheeting to protect nearby surfaces from errant paint. any good floor layer will be able to screed out a 5mm dip in your. Foroblong tiles, each similar. 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. The floor leveler will fill in previous grout lines and make the floor level for the tile over tile application. These screeds can be applied both bonded directly onto a concrete base or un-bonded (applied on to a polythene sheet damp proof membrane). I am hoping to cover it all with a vinyl sheet. TM Tiling Singapore is the #1 Direct Tiler Contractor in the country offering reasonable pricing and quality workmanship. Step 5. While putting a self-leveling compound on Bitumen floors is not recommended, a few other tricks can help, like applying PVA primer or using Ardex 2-part self-leveling compound that combines latex with the concrete. Available styles include: All these products are water-resistant and help to seal the surface against moisture. Over the backs of ceramic tile, stone or brick before placing concrete or mortar during fabrication of ‘negative’ cast panels. (with added latex powder), requiring only the addition of water. Apply evenly one coat of primer (for mix ratio see step 2. 8 Feb 2010. 2.