Mixing and application of Nitotile GP shall be as follows; 20kg of Nitotile GP shall be mixed with 4. These BS 8204-7 compliant, quick-laying screeds are less labour intensive and. Last edited: Sep 2, 2010. Installing cement board won’t work, and if you choose to lay down a mortar bed it takes longer, it’s harder to achieve an even surface, and the screeding process can damage the heating. 2. Arditex NA can also be used to encapsulate under-tile heating cables/mats onto concrete/screed/tile backing boards, prior to fixing ceramic floor tiles. • For use with porcelain tile and over a wide range of floor surfaces when mixed with Polymer Additive (#13956) instead of water. com. The increased use of other dense layers over the screed, such as uncoupling, or crack-isolation membranes made of bitumen or plastics such as. The mixed adhesive shall be applied over the protection screed to a thickness of 3mm up to 1 sqm at a time. Applying a semi-dry cementitious type of screed. 2. Every room was covered in thermoplastic ("Marley") tiles, attached with a thin layer of bituminous adhesive. Bonded. 5. I asked a contractor who happened to be in my company and he say the same thing too. Screeds / Mortar Beds . Apply the desired surface finish using a wooden or polyurethane float. A) ARDITEX NA ® can be used with confidence over almost all subfloors without priming including ceramic tiles, bitumen and flooring grade plywood. 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. Water or latex based screed. Old tiles adhesive should be removed anyway before laying the self levelling compound this because is the way a professional will do the job. Installation of Heated Screeds and Substrates for. Just to be sure you've seen my previous messages: I think the house was built in the 70s but may have been 60s; the tiles have been tested; we haven't had a professional look at the floor with the carpet etc removed but have had advice on "if the tiles are generally in. but you should always prime the subfloor first, I believe you need to give the bitumen a slurry coat first. Arditex NA is a premium latex screed. Use painter’s tape in combination with a drop cloth or plastic sheeting to protect nearby surfaces from errant paint. I would lay a latex screed over the lounge and hallway after replacing or filling (with sand/cement) any loose tiles. Product calculators. 6 mm/m) can contribute to problems. 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. 20 -25 min Working . New-build install: £120 to £135 per square metre. However, a few superficial cracks developed across the screed surface. 0. Thoroughly sweep and vacuum the entire floor. 1. g. VAT. Coverages provided are for estimating purposes only. The price is usually around $14-$28 SGD per square foot; Screeding cement is a simple process that can be done at home. The remaining screed appears to be between 10mm and 20mm in depth. Lee Allen New Member. With the existing tiles removed you're removing the risk of the screed failing. I’m here to talk about latex floor screed. Our wide experience and the quality of our products means we will always be a trusted partner that can meet all the requirements of a constantly. AS 4654. There are four variant of TILEFIXO for different application. The sudden expansion or contraction results in a lack of adhesion between the tiles and the screed. 4 Expression ofResults The averagedimensionofsquare tiles is the average of four measurements. com. Green Screed. 4. Builders often refer to latex screed as a ‘levelling screed’ for this reason. It is typically composed of. My kitchen floor is part bare concrete and part quarry tile with cork tiles stuck on top. A self-leveling compound is. LVTs like Karndean Amtico Moduleo etc yes. Resilient floorcoverings can be installed after just 4 hours and ceramic tiles in as little as 3 hours. Yes prime the latex then fix tiles using a flexible cement based adhesive . 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. Commissioning the underfloor heating before tiling commenced. SR2 5mmMAPEI. Best Self-Leveling Concrete for a Concrete Floor—Quikrete High-Performance Cement FastSet Self-Leveling Floor Resurfacer for Ceramic Tiles. If u dont use the right primer the floor screed will blow under nieth eney flooring. 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. Color: Gray. For Indoor Use. Iam a floor layer with 25 five years experience. MAPEI Technical Notebook(s): 1. 16 January 2007 at 11:38AM in In my home (includes DIY) MoneySaving. Both times was because they didn't want to remove asbestos tiles. Coverages provided are for estimating purposes only. Removing the laitance by sanding to provide a key for the primer and/or adhesive. Allow to dry. they will 99% of. DON’T stretch the peel-and-stick tile too much when installing. of the adhesive, screed and waterproofing compounds onto the surface. Wet underfloor heating installation cost. “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). 9") and tape them together. Discuss Advice for self-levelling over old tile adhesive, using Wickes latex? in the Tile Adhesive area at TilersForums. FAMILY HANDYMAN. 7 Step 7: Leave for 24 Hours: 6. . It varies by manufacturer but it pretty much seems to average 4. If you’re working on a time-critical project, go for ARDEX A 38 Ultra Rapid Drying Screed. I must have a screw or nail loose under one of the tiles because it has cracked. A latex screed is a mix of powder, and liquid latex poured over a concrete slab to provide a flat, level surface. Using chalk or a pencil, mark low and high points and check again for any ridges or depressions you. If there is a significant trench where the grout is – fill it and seal it. Those based in rural areas may pay more for floor screening costs due to the labour travel costs. stoneyboy. Too much extra will probably make it useless. Step 5 – Measure & Draw a Diagram. 9 How to Screed a. Flowcrete UK’s range of Isocrete Self Levelling Screeds offer numerous advantages for both new build and refurbishment projects. This prolonged drying also means that the job can be delayed for significantStep 1: Divide the floor into sections. We had the tiles tested and they definitely contain asbestos. USES Davco 168 is designed for installation of dimensional stone and ceramic tiles over a wide variety of sub-strates. Dump or scoop the mortar onto the surface. Tilemaster Pro Flow can be applied from depths of. Only if you dont like HDB tiles and want to use your own tiles then no need for screeding. ABSTRACT The use of polymer/latex type additives that improve the performance of thin-set adhesives and mortars has been in common and increasing use since the 1960's. The matt sits on top of insulation boards (10mm), which in turn sits on top of a concrete floor). In Swimming Pools. Superior general purpose Cementitious Tile. 1. Lift a tile from time to time to check appropriate coverage and that there4. Hi, You can lay the carpet directly over the bitumen. Hooe this helps. Allow the tiles to dry. 215: 10 mm thick granite floor tiles + adhesive. 3 Step 3: Stacking Tiles: 6. 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. This time I mixed more screed and poured it over the area in question. Floor Tile Gray Thinset Tile Mortar (50-lb) Model # 1011236. Total Time: 2 wks, 1 day - 2 wks, 2 days. Answered 20th Jul 2015. Get ideas for concr. Cement screed flooring is inexpensive. 322. Mapei prim grip is the grey primer. can i latex screed over. Renovation property: £60 to £85 per square metre. Vinyl planks represent perhaps the best option for installation over ceramic tile. Screw the sheets to the subfloor, using rust-resistant screws and spacing them 6 inches apart. Estimated Cost: $75 to $100. 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. simple answer is no, this is mainly down to the adhesive failing underneath. Latex screed over the top of the tiles using a latex levelling screed that is suitable for tiles that will stick to the tiles and not crack and lift. you risk voiding the warranty of the flooring by not installing on a dust free, flat smooth surface. Step 4 – Remove Baseboards. bournemouth Super Moderator. DIYDave. First off, self-levelling compound is a latex based cementitious product that provides a thin, smooth overlay when applied over rough concrete slabs or uneven floors. Packaging: 25kg bags. 2. Once the compound is ready, pour it onto the floor from the farthermost part of the room and work backwards. Resilient floorcoverings can be installed after just 4 hours and ceramic tiles in as little as 3 hours. screed. N. With the application of DITRA matting, tile coverings. Discussion in 'Subfloor Preparation' started by SandyFloor, May 30, 2011. AS 4654. Where it differs from other smoothing products is that there is a latex additive. T & G Floorboards. If your tiles are fairly level than scrape your trowel over the floor to apply a very thin coat on the surface of the tiles while infilling the channels. On this weeks episode of Sealed For Good we discuss how to waterproof over the top of existing tiles and find out the different things you should be looking. Self levelling screed levels out uneven substrates leaving a smooth flat surface to bond to. it is not recommended that you but self-leveling screeds over vinyl tiles, can cause yourself a bigger head-ace in the long run, and i know it can be a night-mare of a job but always better to take tiles up and start from scratch. screed thickness. I am hoping to cover it all with a vinyl sheet. Answered 17th Jan 2012. This has to be absolutely smooth for it to work, though. 2. You can paint over any blemishes or missed spots that the painter's tape covered up, but be sure to let them dry. Rapid, High Flow Self-Leveling Underlayment. 2×4 on edge; any areas where the gap between the slab and the 2×4 is wider than 1/8 in. A self-leveling compound can be used over vinyl tile. There are three main types of screed – bonded, unbonded and floating. 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. 1. Screwfix Select. 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. 5 litres per 20kg bag of screed. 8 Step 8: Grouting: 6. Floating engineered wood is ok. Needs mixing with a. 6 Step 6: Do as Planned: 6. Scotts Plumbing & Property Maintenance Limited. The Latermix Cem range of concretes can be used for base screeds that are strong and very lightweight (450 – 600 kg/m 3) and contribute significantly to the thermal insulation of the slab. Measure the gap between the floor and the raised end to check how far out the floor is. 3. Screeds to adhesive fixed rigid tile applied floorings: BS5385 Part3. Rich mixed up a 5 gallon bucket according to the directions and let it slake for 5 minutes before mixing it again. Continue until the entire floor is covered, smoothed, and rollered. we don't need a specialist. Liquid Screed. Maximum gap measured with a slip gauge. ball & young stopgap green bag self leveling compound powder. Use your steel trowel and work the compound in sections, following up with a spiked roller to make sure there aren’t any air bubbles. Rich. 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. Step 3 – Remove Debris. Mix a small batch of thick screed and in-fill where the tiles are missing. UltraTech TILEFIXO is a polymer modified cement based high performance, high strength, high quality tile adhesive developed to fix tiles, Natural Stones over walls and floors. Can be used with underfloor heating systems. 3. . Measurements shall be made to thenearest0. Answered 14th Jan 2022 Like 0. 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. The new flooring will be loose laid cushionfloor. laminate is ok. 2 litres of water with a slow speed drill. Prime with two coats, allowing the first one to dry fully before adding the second. Yes prime the latex then fix tiles using a flexible cement based adhesive . Latex / screed info please. Below the tape there will be no paint, so your ceramic tiles will now have a perfect border. Use reputable flexible adhesive for tiling on screeds and concrete and as per the manufacturers specifications, DO NOT USE PVA but a latex based primer if the concrete surface is. ARDITEX NA can be used with confidence over almost all subfloors without priming including ceramic tiles, bitumen and flooring grade plywood. JC Flooring Professional Carpet Fitting Service. If the plyboard has been pulled down in some area because of the screws when securing it a levelling compound might. 8 Mpa). Scraping the screed over the newly applied self-leveling latex compound will help to spread it evenly over the floor, ensuring it fills up every dip. 1 – Step 1: Prepare the surface. Thicknesses of 1/4 inch to 3/8 inch are typical (6 to 10. 1 is shown below. Sandwiching will give you a nice flat surface and also eradicate any water vapour coming up through the screed and ruining your flooring. e. Screwfix customers rate this product 4. Too much extra will probably make it useless. Step 4: Mix Mortar. If you're laying Karndean over existing flooring, be sure it is properly prepared. used with confidence over almost all subfloors without priming, including ceramic tiles, bitumen and flooring grade plywood. It can be applied to Stopgap levelling compounds, structurally sound, smooth, dry, absorbent subfloors of concrete and sand/cement screed and plywood (minimum 6mm flooring grade). 5 Step 5: Comb Gently: 6. 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. 8 to 5. 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. Suitable Application. wowfudge · 03/08/2017 14:00. That will stop any raising damp to your vinyl. any minor unevenness would be consumed by the underlay, getting the bitumen up is virtually i,possible and you can not lay levelling compound over it (I have done this before and it all cracked). Arditex NA can be laid from a feather edge up to at least 12mm in a single application or up to 30mm incorporating Ardex Coarse Aggregate. . Screed is commonly set underneath timber, carpet, resin coating, natural stone, tile and vinyl flooring. Latex Floor Screed Thickness. Take up old vinyl tile and latex screed over black bitchem . For the installation of most types of ceramic tiles in interior and sheltered exterior locations. Pry the tile section using the chisel to remove the tile altogether and proceed to the next till the job is done. 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. Before laying self levelling screed, its suitability needs to be determined. Thanks to its protein-free composition, it is also a good choice in environments where hygiene is important such as hospitals and food preparation areas. insulation board) Bitumen residue* * Best practice is to remove all bitumen. BS8204 Part1. Back-buttering is not necessary. over ‘semi-dry’ consistency traditional mortar beds before placing ceramic tile, stone or thin brick. ball & young stopgap 128 latex liquid, mixed with f. 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. Glazed or textured tile surfaces should first be sanded back to ensure a good bond with the concrete, wide grout joints should be sealed to avoid obvious outlines and sinking, and several coats of primer should be used to prepare the site. end. 2. 11. Lay it at an angle of about 45 degrees and force it down using a sledgehammer or mallet to raise the tile edge and break the bond from the floor. SikaCeram®-260 StarFlex Deformable tile adhesive with lightweight fillers. Check the entire slab for low spots by laying a straight 10-ft. They come in thicknesses ranging from 2 millimeters (about 1/16 inch) to 8. 1-2007 – Ceramic Tiles; Part 1: Guide to the Installation of Ceramic Tiles 2. Mix a small batch of thick screed and in-fill where the tiles are missing. Maximum depths are around 10-15mm, however with the addition of bulking aggregates. 2. The function of a primer is to prepare the surface and increase the bond. If using on a floor do NOT allow the primer to form puddles. C. If so your marley tiles still need to be level or your new floor will bounce, creak and sound hollow etc. Floor leveler is usually latex-based cement. Screed: A layer of well compacted material, commonly a mixture of cement and fine aggregate, that is applied to a base at theIt is possible to tile directly onto tongue and groove wooden floors, but the high amounts of deflection/movement will mean that an ultra-flexible (S2) tile adhesive is required. A38 is an engineered screed system based on a specialised cement powder and separate sand-aggregate mix. Remember these tips prior to starting work. The mortar has an open time (work-able time) of about 1 hour. screed over insulation. Unconvinced that repairs were necessary, the tiler installed large format tiles over the cracked screed directly. Help! 29/12/12 - Thanks for your replies. If the height is permissible, installing a screed is an option. ” In May 1989, Tile & Decorative Surfaces expanded on the issue, opining that “rain is one of the biggest contributors to the leaching problem. 0222 / mm thick: 6 mm thick glazed tile + adhesive: 0. Floor leveling or screeding – necessary if concrete cannot be designed and. I'm wondering if anyone can help me please? I've just bought a 70's house which has thermoplastic (Marley) tiles laid to the kitchen and utility. 1 – Step 1: Prepare the surface. Self-adhesive vinyl tiles can be laid perfectly on the screed and liquid screed. Alternatively, you can use a flat shovel or a floor scraper. MAPEI Technical Notebook(s): 1. 1. This is because the latter generally reacts to external influences, such as temperature or humidity, with stronger expansion behaviour. 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. Instead of mixing the compound with water, the water is replaced with bottle of latex, which is then added to the mix. 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. This has to be absolutely smooth for it to work, though. 2. The average dimensionof the sampleistheaverageof40 measurements. Installation of Ceramic Tile . All waxes or sealers must be removed, and patching/leveling or embossing must be brought to a flatness of 3/16” in 10’. 37 mm thick screeding: 0. rip some 18mm ply. The first step in any pool tiling installation is to evaluate the substrate and ensure it is flat enough to receive the tiles. Finally, allow the latex to sit and dry for up to 24 hours. For larger tiles made of either ceramic or porcelain it is important to get the most effective adhesive on the market. As a rough guide, laying a conventional sand/cement screed costs around £15/m2, increasing by around £5/m2 when delivered ready-mixed. Cheers vman, Mar 3, 2012 #1. 3. Paint the grout with grout paint, if desired. 3. Where it differs from other smoothing products is that there is a latex additive. However, the Quikrete High-Performance. Perfect for using over ceramics. Skill Level: Intermediate. Roll the primer onto the tile, being careful not to press too hard on the roller. You can use latex or enamel paint to cover ceramic tile but you have to prepare the surface by deglazing the ceramic ahead of time. of the adhesive, screed and waterproofing compounds onto the surface. 16 Aug 2013. It can be difficult to determine how much flooring you will need, but at Tile Wizards, we have a method that never fails. At the same time i will be screeding over the main floor in the building, this is 7. 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. 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. Its consistency makes it particularly suitable for fixing large tiles and those with profiled backs. If you're laying Karndean over existing flooring, be sure it is properly prepared. Working Time: 6 - 7 hrs. Left any longer, the laitance may be more difficult to remove, and it will certainly delay drying. Apply only a thin coat to avoid dripping. Wickes sell 'Setcrete Floor Leveling Primer' , which seal porous, dusty surfaces prior to pouring the levelling compound. This will provide a dense surface to tile onto and will aid drying. What's the best latex / screed to cover ceramic tiles Andy O'Hara Peter Newman Flooring Www. Ordering and Purchasing. Tiles Installation and Fixing Procedure. Advantages. Good-Wood-Floors . scraper to pry and scrape it up. 5). The tiles will also stick to a concrete floor providing it is covered with a latex screed/self levelling compound. A. Adding a little extra water to a thick mix can make it spread easier, might increase drying time slightly. For ceramic tiles up to 30cm x 30cm or porcelain tiles up to 10cm x 10cm you’ll only need a low grip adhesive. 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. One of the historical Mapei product lines with a complete range of versatile, reliable and innovative products for installing ceramic and stone material. Tiling floorboards with wood effect tiles offers a variety of benefits over natural wood, including being more durable, and easier to maintain and keep clean. use f. Replace the grout in the lines using a grout float to push the grout into place. Self-adhesive vinyl tiles can be laid perfectly on the screed and liquid screed. A 'self levelling screed' is a generic term given to a group of products which are used to create smooth floors prior to the installation of the floor covering. 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. Installation of Ceramic Tile in Swimming Pools,. Secondly, screed over it with a self leveling compound, and let that dry. This removes dirt and irregularities and the self-adhesive vinyl floor can be easily installed. June 28, 2022. commences. Ardex Arditex NA is a smoothing compound and is one of the sub-floor preparation products. g. 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. I have an early 1970s bungalow with concrete floor. According to British Standards, any deviations should not exceed 3mm when measured under a 2m straight edge. If your tiles are loose, cracked, or broken, you will need to repair or replace them before applying self-levelling. With a floor leveling compound, the smooth subsurface is easy to create. Poor Workmanship. e ( DPM, insulation, flooring). Decorative floor coverings can be installed after 4 hours and ceramic tiles can be applied after 3 hours. Use a level to check the floor. Providing they are sound and well bonded to a solid base with no cracks or lipped tiles. Check out our website and and contact us for more information. Without seeing the rh% of moisture in the sub-floor it's impossible to give 100% correct information, but as long as the rh% is under 97% you could prime the floor, use a latex based screed to give a smooth surface, use a surface DPM (as far as i'm aware only Ardex DPM 1 C is guaranteed over a sub-floor without a working mechanical dpm) then finally. co. For decades. Mixing and application of Nitotile GP shall be as follows; 20kg of Nitotile GP shall be mixed with 4. ARDITEX NA can be applied on all common subfloors such as concreteStep 4: Mix Mortar. Wait overnight for the grout to set. Further information is we eventually want a hard wood or engineered wood flooring. It’s walkable in only 3 hours, receives ceramic, or stone tiles from 4 hours, and resilient floorcoverings from just 48 hours. Flooring. Just make sure the tiles are solid. Leave to go off slightly then sprinkle some water over and smooth over with the trowel. If the tiles are in good condition, with no cracks or chips, then screeding over them should be possible. Because concrete has the potential to hit very high strengths, it is used across the construction industry for. If the ceramics are bonded firmly to the floor you could apply primer (P131) and latex over the top. In that case, first of all, you need to take out the old vinyl tile and then apply self-leveling concrete. Primers. Use duct tape to try and rip it off like a waxing strip. A proper floor fitting will screed over tiles and lay karndean but I have no idea whether it would render underfloor heating useless. Self levelling compound will put a lay of 2mm ish if spread on 2sq Mt. Maximum gap measured with a slip gauge. USE To level uneven internal subfloors to provide a smooth surface. 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. Over the backs of ceramic tile, stone or brick before placing concrete or mortar during fabrication of ‘negative’ cast panels. Once traffic starts walking over it, those stresses start moving the tiles and eventually they pop off the floor and get. MAPEI recommends adding 5% to 10% in overage to ensure. The typical total for a classic screed is between £15 and £16 per metre squared. Additionally, being able to use these over wood. 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. Ideal for installing ceramic tiles, marble, slate and natural stone onto concrete, cement render, rendered brickwork surfaces or over existing tiles. 3. Mudster - Nov 3, 2005 #2. Economical: Suitable for tiling on fresh screed. 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. Maximum gap measured with a slip gauge.