You can then lay your new floor on top. U then primer the floor ready for latexing. Screeds to adhesive fixed rigid tile applied floorings: BS5385 Part3. Hi Fred. 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. Shovel up a full load of mix and dump it on top of the mixture. Floor Tile Gray Thinset Tile Mortar (50-lb) Model # 1011236. 5:25 AM. Products for Ceramics and Stone Materials. Alternatively, you can also grind down the uneven concrete flooring by using other tools or sandpaper. If there is a significant trench where the grout is – fill it and seal it. 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. 3. tanking. I would assume that. In Swimming Pools. nArdex Arditex NA self levelling screed is suitable for use over most substrates and adhesive residues. If the layer of screed is bad and the Tile is cut improperly, it will result in cracking in the long run. 1. “A common cause of problems in rigid tiled flooring is cracking, associated with underfloor heating. The example of bumps (OP's problem) of one quarter inch maximum, should prove no problem needing levelling (for flat/smooth). Resilient floorcoverings can be installed after just 4 hours and ceramic tiles in as little as 3 hours. The correct way to this job would be to lift all the floor tiles, lay marine plyboard down and secure it with screws. If you have the height you could tile over the top - its not ideal. ball & young stopgap green bag self leveling compound powder. application of a screed on a floor background. JC Flooring Professional Carpet Fitting Service. Latex Floor Screed Thickness. ceramics I don’t know. Ready to tile now, use good quality tile adhesive and grout, powdered (bagged) materials are best. However, I have a number of questions. e ( DPM, insulation, flooring). 2. Vinyl Flooring Options. 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. Mastic is a general term for a type of glue-like adhesive. Professionals often prefer using the 2-part compound since it provides faster results and has a shorter. screed over insulation. If there is a significant trench where the grout is – fill it and seal it. 5 mm must be completely compensated. so asphalt over concrete, latex screed, either NA or latexplan trade etc. Northampton •. SandyFloor Well-Known Member. Coverages provided are for estimating purposes only. The level of residual humidity in a screed is measured using an electric or carbide hygrometer (Fig. Screeding over cracked tiles can cause pressure over time on the screed and begin to break it up in the affected areas underneath. Self levelling compound will put a lay of 2mm ish if spread on 2sq Mt. Both times was because they didn't want to remove asbestos tiles. maul. All these products are water-resistant and help to seal the surface against moisture. Ensure the floor is fully dry - the residual moisture level should be less than 0. 5 millimeters (about 3/8 inch) and typically float over the subfloor. L. To flash the floor, the guys are using Kerabond mortar with Keralastic latex additive because it bonds so well. screeds to dry out to some extent prior to installation of ceramic tile finish 1. 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. 710 Febflor can easily. Hi I am about to remove the ceramic floor tiles in my kitchen and replace with either 4mm. Maximum tile size 300 x 300 mm. Using the notched side of the trowel, comb the mortar to produce an even surface. I want to install LVTs over. 3 from AS3958. Overlap sheets by at least 20 cm (7. However, with unsatisfactory fixing practices or in certain climatic conditions, moisture expansion in excess of 0. Allow to dry. Fast Setting Screeds Allow a faster setting time to achieve foot traffic within a shorter period. The first step in any pool tiling installation is to evaluate the substrate and ensure it is flat enough to receive the tiles. NOTE: Arditex NA should not be used on top of vinyl. Use painter’s tape in combination with a drop cloth or plastic sheeting to protect nearby surfaces from errant paint. 8 Feb 2010. ”Information Paper from IHS BRE Press provides practical guidance for architects and specifiers. SR1 3mm. a screed should be used prior to fitting any amtico or LVT (luxury vinyl tile) flooring. 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. 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. The first thing to. Sanding is a technique where you primarily use sandpaper to grind down a wooden floor. AS 3740-2021 – Waterproofing of domestic wet areas 3. Thirdly, paint again with the liquid DPM and let that dry. Glazed tiles usually require a light sanding to "rough up" the surface. The floor leveler will fill in previous grout lines and make the floor level for the tile over tile application. 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. Many modern mastics are latex, or water-based, and can be softened with water. It pours wet and then dries to create a solid flat surface that is highly durable. Green Screed. 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. 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. Tile Backer Boards. For decades. Use a 2×4 to screed the floor and completely. 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. Use these tools to calculate the approximate amount and estimated cost of products needed to complete your project. They made it an entirely new house! As is super common here in south Texas, the house had large ceramic tile flooring installed throughout. Tile panel movement joints should be created at maximum 3 meter centres in both directions, as well as around the perimeter of the floor. Mix 1 part water to 1 part Prime & Bind. Installing a damp proof underlay for concrete floors. A “floating” screed is an unbonded screed applied over a layer of thermal insulating material, such as expanded polystyrene or polyurethane panels (Fig. 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. It is a considerably cheaper alternative to a full renovation as no hacking is required. The asphalt content lends mastic its black color. Application examples:The topic ‘Asbestos floor tiles’ is closed to new replies. You can achieve tilling over a slate can with an experienced tiller. You need to adurapid crack, then primer and latex then. Slide the tile at right angles to the notch pattern to ensure maximum coverage on the back of the tile. Cement screed flooring Singapore: pros and cons. 8: Terrazo paving: 0. 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. Screed is commonly set underneath timber, carpet, resin coating, natural stone, tile and vinyl flooring. All that’s required is spreading the compound over the prepared tiles. Suitable Application. 1. 2. a suitable primer (depending on sub floor) should also be used. Answered 5th Apr 2021. SR1 3mm. As a result, it is not advisable to screed over asbestos floor tiles. III. This prolonged drying also means that the job can be delayed for significantStep 1: Divide the floor into sections. flooring bloke New Member. Tile adhesive is often used on large wall tiles to ensure they stay put once installed. Price Addition Info. I would also recommend you go for Latex self levelling screed over water based ones. #6. e. can i latex screed over the whole lot without removing the cork tiles which are very well adhered to the quarry tiles? or 2. 105 mm. Bonded Screed Minimum Depth. As well as regular upkeep, wood flooring often needs annual sanding and re-sealing to maintain its quality. The tiler can then latex or screed over the DPM. and the screeding process can damage the heating cables or mats. 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. 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. That way if your kick boards are already fitted to the height of the ceramics there is no need to replace them. Apply the desired surface finish using a wooden or polyurethane float. Floor covering is a term to generically describe any finish material applied over a floor structure to provide a walking surface. SR2 5mmMAPEI. Www. My kitchen floor is part bare concrete and part quarry tile with cork tiles stuck on top. 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. 5). Apply only a thin coat to avoid dripping. 214: 10 mm thick glazed tile + adhesive: 0. 0. Additionally, being able to use these over wood. Applying the primer: To apply the primer, use can either use a paint brush or a paint sprayer. Move the level across. Fast setting time - sets in two hours Overlay can commence after eight hours Application depth, 0. Liquid Screed. 6 mm/m) can contribute to problems. Kent. Primers. Left any longer, the laitance may be more difficult to remove, and it will certainly delay drying. 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. To flash the floor, the guys are using Kerabond mortar with Keralastic latex additive because it bonds so well. Nonetheless, as simple as this process might sound, there is a lot more to. 75, The Home Depot. Ultraplan Renovation Screed 3240 is suitable where good resistance to loads is required, also for castor wheel traffic and underfloor and undertile heating systems. of the adhesive, screed and waterproofing compounds onto the surface. Check out our website and and contact us for more information. If you are installing where existing floors have been removed, check that there are no traces of previous adhesive residue. almightymat. Work the chisel between the tiles and the concrete, hammering them up with a 2-lb. 1. Adding a little extra water to a thick mix can make it spread easier, might increase drying time slightly. Ive also had 70 m2 latex crack over vinyl tiles. It is foot trafficable within three hours, and can be tiled after approximately four hours. Step 3 – Remove Debris. Removing the laitance by sanding to provide a key for the primer and/or adhesive. the concrete or sand/cement screed should be confirmed dry by. Or 1/16 th of an inch in any 24-inch substrate. 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. Next, with a brush or roller, apply high-gloss or semi-gloss latex. Also use for interior applications over exterior-grade plywood. Measurements shall be made to thenearest0. 2-m straightedge laid in contact with the screed. 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. Bonding Agent for Use with Sand/Cement Screeds and Renders. if floor is a concrete floor, then a latex mix would be safer due to the fact if there ever was a moisture issue then a latex mix would fair better than a water mix every. Wickes sell 'Setcrete Floor Leveling Primer' , which seal porous, dusty surfaces prior to pouring the levelling compound. Uplift the tiles Latex screed NA 2x coats dpm Latex screed New tiles Anything else, could end up being false economy. Removal of the tiles is non-licensed work, ie. 6 Step 6: Do as Planned: 6. The floor leveler will fill in previous grout lines and make the floor level for the tile over tile application. Tiles greater than 400 x 400 mm should be back-buttered. Remove the painter’s tape to reveal a straight even edge. If you’re working on a time-critical project, go for ARDEX A 38 Ultra Rapid Drying Screed. Perfect for using over ceramics. As long as the old floor is in good condition and can allow the new mortar to stick properly, it should not be a problem. 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 -. Maximum gap measured with a slip gauge. According to British Standards, any deviations should not exceed 3mm when measured under a 2m straight edge. 1-2007 – Ceramic Tiles; Part 1: Guide to the Installation of Ceramic Tiles 2. The floor leveler will fill in previous grout lines and make the floor level for the tile over tile application. On ceramics I would go ardex na balls 1200 or a flexy screed 95 % of the time I go with a good coat of level flex ( balls 700 say you cant use on ceramics ) then a nice buff off and then a coat of balls 500 micro then lvt stuck in f46 ps. Rich mixed up a 5 gallon bucket according to the directions and let it slake for 5 minutes before mixing it again. Screeds / Mortar Beds . However, unevenness over 0. However 13 IS a Prime Number as it can only be. C. Your best option now is to take up the ceramic tiles, adhesives and grout then fasten down the 6mm plywood mentioned above. Floating Floors. Screed: 20 mm over 3 m . Andy O'Hara. The tiles will also stick to ceramic tiles if they are untextured. 2. However, I contacted a specialist anyway, and we are looking at £400 + VAT to remove the tiles. ARDITEX NA can be applied on all common subfloors such as concreteStep 4: Mix Mortar. used with confidence over almost all subfloors without priming, including ceramic tiles, bitumen and flooring grade plywood. s1oww said: The area i need to cover over the tiles is 6m x 2. Checkatrade offers the following guide: Electric underfloor heating cost. Any. Working Time: 6 - 7 hrs. bournemouth Super Moderator. The dpm resin, is a sticky gooey 2 part epoxy based liquid to be precise. . Product calculators. 3. Clean and thoroughly dry your tiles prior to installation for even more endurance. Cleaning the debris: Soak a cloth in clear water and wipe any dust or debris off the plywood surface. ARDEX K 15®. TM Tiling Singapore is the #1 Direct Tiler Contractor in the country offering reasonable pricing and quality workmanship. material system used as a base over which the ceramic tile is to be fixed. In most rooms, the tiles are still in place, in varying conditions. You can latex over ceramic tiles no problem as long as you use the correct primer. Planning - Calculate the number of tiles - Setting out - Laying the vinyl tiles - After care. 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. over almost all subfloors without priming, including ceramic tiles, bitumen and flooring grade plywood. 2. All waxes or sealers must be removed, and patching/leveling or embossing must be brought to a flatness of 3/16” in 10’. Discuss Advice for self-levelling over old tile adhesive, using Wickes latex? in the Tile Adhesive area at TilersForums. Ceramic tiles: 3-5 days : 50-70mm: Carpet: 6. SR2 5mm. Pouring self leveling concrete over linoleum tile with a DIY concrete dispenser made from a trashcan. Arditex NA is a premium latex screed. USES Davco DW 1 may be used as a mortar additive for fixing. Before applying a floor covering, Setcrete Latex should be left uncovered for 24 hours when applied at 2-5mm thickness. Apply as a bonded, unbonded or floating screed. any good floor layer will be able to screed out a 5mm dip in your. Allow the tiles to dry. AS 3740-2021 – Waterproofing of domestic wet areas 3. Screeds are typically bonded onto most concrete. Floor leveler is usually latex-based cement. “Attend to the water damage as soon as possible as water leaks will cause damp patches on the ceilings of rooms below the installation and this leads to peeling paint and costly repairs,” she says. These screeds can be applied both bonded directly onto a concrete base or un-bonded (applied on to a polythene sheet damp proof membrane). The thinset that was applied to glue down the tiles, has been applied over a dirty surface and instead of adhering to the substrate, it adhered to the dust and oils sitting on top of it. Self-leveling Properties: Ceramic tiles may have minor level. Any difference in levels at the doorway can be. Coverage: 0. Estimated Cost: $75 to $100. Fiona_cooks New Member. The common types of flooring laid over levelling screeds. In warm and well ventilated drying conditions allow 1 day per millimetre up to 40mm in thickness, so 40 days if 40mm. Builders often refer to latex screed as a ‘levelling screed’ for this reason. 4 Screed. laminate is ok. There is no additional water, just pour the. Total Time: 2 wks, 1 day - 2 wks, 2 days. We have thought about having a. The best solution is to uplift the tiles and dispose of accordingly, then use a specialist screed such as F-Ball Stopgap 1200 straight over the bitumen. 1 to set ceramic and stone tile, including large format tiles, over the KERDI membrane. 5Ltr at Screwfix. laid for anywhere from 40-60 days after the screed is placed, dependent on screed thickness. A common practice among Singaporean homeowners, overlaying tiles is the process of laying new tiles on top of existing tiles or vinyl flooring. Under ‘wet’ consistency toppings/overlays; 4. use f. Davco DW 1 is a synthetic, latex based mortar additive designed for use with portland cement and sand to prepare high strength, thin set mortars. If so your marley tiles still need to be level or your new floor will bounce, creak and sound hollow etc. If a dipping grade adhesive is not wanted, then the trowel applied Styccobond B95 adhesive can be used instead. Resilient floorcoverings can be installed after just 4 hours and ceramic tiles in as little as 3 hours. Without proper preparation and priming, you risk your tiles peeling up later due to poor conditions. 1. quarry, ceramic and most natural stone tiles* over interior or exterior concrete and masonry floor and wall surfaces. Porous unglazed clay or stone tiles, on the other hand, require no additional preparation. For wet areas such as. Walls: 4 mm in 2 m. Suitable for both internal and external, thin bed applications. Installation of Heated Screeds and Substrates for. 8 Mpa). you risk voiding the warranty of the flooring by not installing on a dust free, flat smooth surface. Step 2 – Sand Dried Mortar. 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. . There is no additional water, just pour the. Used for: levelling uneven subfloors, internally and externally, prior to laying ceramic tiles, thermoplastic tiles, lino, wood block flooring, or carpet. 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. 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. A range of smoothing concrete for a smooth, permanent finish to a variety of internal substrates prior to the installation of floorcoverings, choose ARDEX. footprints and trowel marks. • When mixed with water, suitable for ceramic tile, quarry, pavers and saltillo tile over cementitious surfaces. However the tiler should apply a Primer before screeding such as. In most cases with correct prep and the tiles being sound this isn't a problem but here's the question : Would you use the less. 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. • The recommended adhesive for this application is ProGrip Flexibond for ceramic tiles or ProGrip Porcelain Fix for porcelain tiles. Having a skilled mason is a. Over plastic, semi-dry consistency traditional mortar beds (min 20mm thick) before beating in pavers and ceramic or stone tile in cold climate conditions. ARDEX Screeds will pass a BRE Screed test in as little as 6 hours, rather than 2 weeks with conventional screeds. I am hoping to cover it all with a vinyl sheet. any good floor layer will be able to screed out a 5mm dip in your. For ceramic tiles up to 30cm x 30cm or porcelain tiles up to 10cm x 10cm you’ll only need a low grip adhesive. 85kg Latex Coverage: 5m2 at approximately 3mm thick. Answer: This will depend on the type of tiles you are going over. 1), or. 7 Fixing Cracks in the Concrete Floor Before Tiling, some helpful tips. Hi Pete, I have the answer. Photo credit: Weber. 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. All that’s required is spreading the compound over the prepared tiles. ” In May 1989, Tile & Decorative Surfaces expanded on the issue, opining that “rain is one of the biggest contributors to the leaching problem. DIYDave. b. A self-leveling compound is. One of those options is a new layer of ceramic tile. 4. Over plastic, semi-dry consistency traditional mortar beds (min 20mm thick) before beating in pavers and ceramic or stone tile in cold climate conditions. Fibreglass * Prime. 1 Step 1: Remove the adhesive residue. Answered 14th Jan 2022 Like 0. 1 Sand-cement screeds should generally incorporate a latex additive (such as Planicrete) and should be installed as per the guidelines in Appendix A of AS 3958. Many screeding products, like Instarmac’s UltraFloor Screed-IT, set rapidly. Thicker substrates require 2 days per mm. 2. 12. With a floor leveling compound, the smooth subsurface is easy to create. Dump or scoop the mortar onto the surface. This is because the latter generally reacts to external influences, such as temperature or humidity, with stronger expansion behaviour. Discard any material that has exceeded the pot life or working time of the product. I've gone over vinyl tiles with green bag and 300 and got away with it. Priming becomes even more of a necessity once you consider the amount of dirt, plaster, adhesive, and various. . A) ARDITEX NA ® can be used with confidence over almost all subfloors without priming including ceramic tiles, bitumen and flooring grade plywood. 2. Discussion in 'Builders' Talk' started by oogzy, Nov 3, 2005. The typical total for a classic screed is between £15 and £16 per metre squared. They are also known as thin screeds, flow screeds, liquid screeds, pumped screeds, deep bases or deep fills. The tiles will also stick to a concrete floor providing it is covered with a latex screed/self levelling compound. My kitchen floor is part bare concrete and part quarry tile with cork tiles stuck on top. they will 99% of the time be a very poor strength compound. 5 millimeters (about 3/8 inch) and. Supplies. screed to go off before laying the tiles, so I am guessing I should also wait the same time-frame before putting down the S. latex floor screed is a cement-based smoothing compound. 2-m straightedge laid in contact with the screed. 4 hours and ceramic tiles after 3 hours ¥ Suitable for use over old adhesive residues including bitumen ¥ Moisture tolerant - can be used below a DPM ¥ Excellent flow and self-levelling properties ¥ Excellent adhesion properties without priming most substrates ¥ Ideal for use above underfloor heating systems ¥ Ideal for timber substrates In order to check the level of your floor, use a long spirit level (2m is ideal). camo Member I'm a bathroom fitter & have a small. laminate is ok. The floor is then completely sanded and vacuumed. Allowing the UFH system to cool down for at least 48 hours before tiling commences. 1. LVTs like Karndean Amtico Moduleo etc yes. Installation of Ceramic Tile . hand maul. A self-leveling compound can be used over vinyl tile. June 28, 2022. Old fire blankets and heat resistant gloves can also be made out of asbestos textiles. Ideal for fast-track tiling, ARDEX AM 100 is ready to receive tiles after just 2 hours, regardless of thickness. 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. Resilient floorcoverings can be installed after just 4 hours and ceramic tiles in as little as 3 hours. co. bournemouth Super Moderator. Installation of Heated Screeds and Substrates for. 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. Re: Advice for self-levelling over old tile adhesive, using Wickes la SBR is a liquid bonding agent. The mortar has an open time (work-able time) of about 1 hour. Compound. The mortar has an open time (work-able time) of about 1 hour. 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. This has to be absolutely smooth for it to work, though. screed or topping. Keep going until you’ve shifted the entire mountain atleast 3 times. It’s walkable in only 3 hours, receives ceramic, or stone tiles from 4 hours, and resilient floorcoverings from just 48 hours. Hi Charlotte, I wouldn't screed over them as the adhesive used under the Marley tiles will be a very week bond and over time walking on the floor they can come loose which will then crack the screed and then the Karndean will be up.