PRODUCT CONFORMITY Tarmac ready-to-use cement sand factory produced screed materials conform to the requirements of BS EN 13813. The fibres are actually added to the water, mixed well and then both added to the mix. Bond It Monster Mesh 1 x 50m. 5 L 5 kg SCREED ADDITIVES Smet SBR Smet Screed Fibres Product SBR is designed as an Description admixture for concrete repair, floor screeds and toppings, external rendering, waterproofing and tanking, fixing brick slips and tiles, corrosion protection ofIsocrete PP Fibres may be used in any cement based screed at a dosage of 75g per 25kg cement, 150g per 50kg cement or 500g per tonne of ready mixed screed (i. 4 review s. The influence of recycled PET fibres on the reinforced concrete’s early-age performance and mechanical characteristics has also been investigated. Screed is a thinner layer of concrete material, which is a higher quality for a smoother finish with smaller aggregates. Technical Datasheet. It could be a plasticiser, it could be something to make the screed gain strength. Sea transport (IMDG) 14. As a proportion of the concrete or screed mix, 1 x 100g bag is used to 1 x 25kg bag of cement. Reduced early age shrinkage/cracking. Transport hazard class(es) Not applicable Hazard label(s) Not applicable Sub Risk: Not. This deep fill levelling compound has added fibres for increased strength and flexibility, and is suitable for preparing interior floors in dry areas prior to laying LVT, vinyl sheet, carpet, natural stone, porcelain and ceramic tiles. They will work back to the doorway leaving the whole surface smooth, ready to start drying. Universal Starter Strip. Screed, is a thinner layer of concrete typically poured over a slab or concrete base forming a smooth surface. The pulp from waste paper substitutes a part of inorganic filler or. Chicken wire does the same and also strengthens the screed, but again you don't need that either unless for some specific design reason. It is the inherent nature of screeds to shrink and curl and develop micro cracks during the process of drying. D49 Wrapping Mesh is CARES approved to comply with the requirements of BS4483:2005. For context, wired connections usually perform in the 5–70ms range. #3. Screed reinforcement is a common practice adopted to improve the strength of screed constructions, curb shrinkage and cracking and impart better impact resistance to screeds. UN number Not applicable 14. GOLD. £12. Stainless Steel Micron Wire Mesh for Industrial, Material Grade: SS 304 316 310. We would always recommend a little extra to allow for waste and small changes in depth. Below are some key facts about the levels of service available. Screed. From £45. TDP’s Concrete and Screed Fibres are available in 20mm lengths while the company’s Plaster and Render Fibres are cut into 2. -markie-, Feb 10, 2020. Install on frame construction where stucco and foundation walls meet. Bostik Floor Screed Fiber Universal 20/05/2015 Internal No: P0056 7 / 9. Size: ALL SIZE CAN BE MANUFACTURED. A ready-mixed concrete specially designed as a durable direct floor finish, or as a substrate to screed. jimbobster New Member. Concrete and. To purchase ScreedBoard and the required accessories, including ScreedBoard Adhesive and fixing tools visit Underfloor Store today or call us on 0330 123 2231 to speak to one of our friendly and knowledgeable team membe. With a large stock holding and an extensive fleet of. Add 1kg of screed fibres per cubic metre. The presence of fibres can help to achieve a more cohesive material and help control cracking caused by intrinsic stresses. Packing group Not applicable 14. Bostik Floor Screed Fiber Universal. At the TekGroup we specialise in Insulation & Acoustics, Construction Accessories, Screeds, Render, Underfloor Heating Solutions, Dry Screed, Drylining Solutions and Passive Fire Protection, providing our customers with the best product solutions to suit their projects. Delivery Free delivery available (restrictions apply) Log in to buy. The SELCO fiber availability map shows where fiber has been made available to customers. Originally invented by Kaspar Winkler, the founder of Sika in 1910, Sika®-1 was a quick setting waterproofing admixture for mortar, which was used to waterproof the Gotthard Tunnel. Exterior foundation WEEP (sill) screed The FHA-7 is for hard-coat stucco, thin-veneer stone, and 1-coat stucco over foam applications. The dry mix with added fibres was mixed for Located on Clock Tower Road, just off Worton Road, our Selco Isleworth branch is open 7 days a week, so you can get all the building materials and timber supplies you need at a time that suits you. Let’s talk about fibre screed minimum thickness. Call (508) 841-8500 to order. uk for Tarmac. 45–0. Install Celotex GA 4000 floor boards onto the slab, making sure that all joints are tightly butted. 8mm2 at 6mm 1. Suitable for use with underfloor heating. 3. November 23rd, 2017. Lay and tamp the screed level, then float to appropriate finish. The screed is tamped using a Screed Dapple Bar twice; once fairly vigorously to get any air bubbles out of the screed and the second time more gently without leaving the surface to get a smooth finish. Sdluxn Steel Fiber Wholesale Lxbk Modified Polypropylene Screed PP Fibres China Standard PP Twist Fiber. Reduces shrinkage and cracking when repairing floor screeds. This blend of materials helps the screed. SELCO has awesome customer service in all departments. Durable. Today I'm here to…Mixed in a 90litre standard cement mixer, the screed material comprised 1:3. Upload your proof of business, fill out your details, and we'll give you your trade card number then and there so you can buy online and in-branch straight away. If you require floor screeds then visit Underfloor Store today and view the Cellecta Screedboard 20. Quick-drying, flowable Calcium Sulphate Screed. 5mm per day. 00 every month. UN number Not applicable 14. 20mm Fibre Additives For Concrete & Screed 100g. 8 m), and exhibit optimum fiber yields when cultivated in temperate climates with annual rainfall on average of 600–650 mm. Reduces the need for remedial work. bostik-nordic-product-image-30622823-SL-C400-FIBER-20kg-640x480. £30. Transport hazard class(es) Not applicable Hazard label(s) Not applicable Sub Risk: Not. Plasterboard/ Medium Density Fibre-Cement Sheet on Walls (Internal Walls Only)Abstract and Figures. Material. #2. Micro-reinforcement system for concrete is 100 percent virgin homopolymer polypropylene fine fibrillated fibres containing no reprocessed olefin materials. info@speed-screed. With a screed silo, the cement and sand are completely dry, so that the weight will be slightly lower per m³. Floating screed: This is where the screed is overlaid on something that is compressible and not rigid. Our products include fire cement, fire bricks, refractory setting cements/mortars, plastic mouldables refractories, zircon refractory. For use on new or existing concrete, screeds, stone, ceramic tiles, old and new timber floors, parquet and plywood. Mixed in a 90litre standard cement mixer, the screed material comprised 1:3. Lightened premixed screed fiber reinforced with cork (gran. ARDEX A 38 MIX. Achieve efficient and reliable heating with ease. SITE PRACTICE All Premier Mortars screeds should be used in accordance with the recommendations in the Code of Practice in BS EN 8204. These users thanked the author wes56 for the post: 307camel. Always check your battens are completely flat using a spirit level. When I replaced back steps, fibre was added to the concrete, had a large hole in plaster, so added some in with filler & pleasantly surprised how well it worked. Fibre Reinforced Concrete acquires high stiffness, strength and durability subjected. 4, 0. In either case, fibres are to be used in accordance with the manufacturer’s instructions. Add approx 1 handful of fibres to each mix made in the cement mixer. So, if there’s no joint, there may be the possibility of thermal cracking. The fibres and the cement are to be added at the same rate to a mix. 02920 815 657 Wales. 1. China Screeds Concrete manufacturers - Select 2023 high quality Screeds Concrete products in best price from certified Chinese Concrete, Concrete Machine suppliers, wholesalers and factory on Made-in-China. These. Prime the screed with 2 coats of DUNLOP TILERS PRIMER. Available in Aluminum (A), Copper (C), Galvanized Steel (GS), Bonderized (BN), Galvalume® (GVM), Stainless Steel (SS) or Zinc (Z) A traditional weep. Manufacture The Readyscreed® range is manufactured at specialist. Once the compound is ready, pour it onto the floor from the farthermost part of the room and work backwards. C20-25. 24. Any Internet Package with Digital Cable. Flexidry Global have kindly allowed us to publish this calculator. A floor screed is usually a cementitious material made from a 1:3 or 1:4. 5mm = 2. Download the document. 2. With both base and top coats, stir the putty well and add in the sand slowly. Cement and sand screeds need a minimum thickness of between 65 to 75 mm. £4. This research employed vegetal soft and rigid fibers in a screed mortar to produce a sustainable fabric–cement matrix. Fine sands including brick-laying sands. Cemscreed is a cement based binder for producing an early drying high strength floor screed when mixed with graded aggregates and water. com - 0800 242 5589 - is the fibre screed minimum thickness?I’m Andy Parkin, Managing Director of the Multi-Award. Packing group Not applicable 14. A flat board (screed board, floating screed) or a purpose-made aluminium tool used to smooth and to "true" materials like concrete, stucco and plaster after they have been placed on a surface or to assist in flattening;; A strip of plaster or wood. Country. ★★★★★ ★★★★★. Marshalls Retanol screed is compatible with all normal building materials. Respect curing and drying times. SAVE even more with a Double Play or Triple Play Discount! Double Play - Choose ANY Live TV package with any internet package and save $5. Every member of our customer support team is. Shoutout to Selco Builders Warehouse who have become one of our new Grindermate stockists! They're kicking things off with a great Real Deal while stocks last…The presence of fibres helps to achieve a more cohesive screed material helping control cracking caused by intrinsic stresses. Starter Strip with Weep Holes in Front. Call 0208 604 8997 for an instant quote. An unbonded Cemfloor Screed would usually require a minimum of 30mm thickness. 79 Ex VAT £42. (In the picture, the left sample is good. The dry mix with added fibres was mixed for Screed is quite simply a thin, top layer of material laid over a concrete subfloor, that is traditionally made of sharp sand and cement, similarly to concrete. Aggregate can be used within a screed system, potentially reducing the weight over conventional screeds by 50. Eliminates the cost of providing metal mesh reinforcements. Rawlplug R-KEM-II Polyester Resin 175ml. With TDP Concrete Fibres and Screed Fibres you can achieve a high quality finish with an excellent surface hardness improving resistance to wear and tear. 74% of SELCO's coverage footprint, and the average speed for fiber is 300 Mbps download and 300 Mbps upload. Floating: Standard (or Heavy Duty) Isocrete K-Screed reinforced throughout with steel fabric to BS4483 ref. D49 Wrapping Mesh is CARES approved to comply with the requirements of BS4483:2005. Pre-Blended Ultra Rapid Drying Cement for Internal & External Screeds. Tile Rite Spiked Roller 760mm. Quick Links. Thanks to its innovative formulation, it can be used over timber floors, electric undertile heating cables and for smoothing over cement:sand screeds with existing underfloor heating. Here is Bob, who is organising out the mixing of the screed. After that, ordinary fibre reinforcement is no longer useful, not even as reinforcement. The screed is drawn toward the workers with a sawing, scraping motion that simultaneously smooths the surface and pushes excess concrete into any gaps or hollows. 4. In order of preventing condensation and liquid screed migration, install a vapour control layer over the insulation. Free Postage. Fibre Concrete Solutions offer a range of market leading products. 29 May 2011. Add screed to the first section of your floor. Available in 100g or 900g pre-packed sizes for the smaller user. Install flashing at the bottom edge of the exterior above-grade wall and overlap with weather-resistant barrier. Fibre Reinforced Sand and Cement Floor Screed Benefits. Transport hazard class(es) Not applicable Hazard label(s) Not applicable Sub Risk: Not. Mix for approximately 20 minutes after adding sufficient water. From scrapers to chisels and blades, you'll find all the flooring tools you need at Selco. These concrete and screed fibres are made from 20mm polypropylene and designed to minimise shrinkage and cracking in concrete and screed mixes. Self Levelling Compound Sort By: No Nonsense Cement-Based Levelling Screed 20kg (116HU) (4) compare Coverage: at 3mm Thick 4. Whilst Bostik's Ultra Strong Cemoplay is ready to stop water or cold in their tracks making it suitable for exterior use as an underlay. 5mm = 2. “3-Dimensional” reinforcement. 5 proportions of cement to sand and the water/cement ratio kept at below 0. Improves adhesion of cementitious screeds. Technical Datasheet. Concrete and Screed Fibres 900g Bags. 78. Dry ready mix screed fiber reinforced weberfloor 601 FFS. D49 Wrapping Mesh is manufactured from 2. So I have a concrete shed base to do and am planning to use fibres but unsure which ones to use. 90 Per Sheet. 2. It is used to cover structural flooring concrete, and can be applied to either a. 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. • Fiber Reinforced Polymer-Modified Cement Screed. Examples of compressed fibre cement sheet include Hardiflex, Versilux, Villaboard, and CSR Board. Check your local branch stock. With its crack-bridging properties. Being a lightweight insulator it allows to insulate thermally without. CERESIT® CP 30, used for quick repairs of flat and pitched roofs as well as for permanent waterproofing of flat roofs as a finishing coat. Improved flexural strength/flexural fatigue resistance. To slurry a concrete floor slab, a sloppy mix of 50:50 sand and cement scrubbed into the surface will do the trick. It consists of a mixture of sand and OPC cement. Here are some of our most frequently asked floor screeding questions. Continue until the entire floor is covered, smoothed, and rollered. Transport hazard class(es) Not applicable Hazard label(s) Not applicable Sub Risk: Not. Its high density and unique resilient layer provides unrivalled acoustic performance, typically 5dB better than legislative requirements. 6 x 2m A142 Concrete Reinforcing Mesh can be used across a wide of industries in both internal and external concrete reinforcement, and helps provide strength, stability and rigidity to concrete sections. Step 3: Close your old account and transfer remaining funds. Heavy-duty fine concrete levelling screed – use aggregates between 6-10mm. O. This takes around 7 days and you need to cover the screed with PVC sheeting. ACI 544. All conduits should be firmly fixed covered with suitable crack control mesh and given a minimum. Reduces the need for remedial work. Add external accounts for a 360 view of your financial picture. Rapid Drying, High Build, Fibre Reinforced Levelling and Smoothing Compound. Input your projects dimensions into the screed volume calculator below, and you. com I'm Andy Parkin, Managing Director of the Multi-Award-Winning Speed Screed. By adding gravel and cement to sand you make. The curing time is approximately 7-14 days depending on temperature, care should be taken to ensure the screed does not dry/cure too quickly. BREEDONFlow® Gypscreed screeds are generally pumped using equipment with closed or grilled dispensing hoppers removing risk of contact with moving machinery. Log in to buy. Add aggregates (e. Ordinary fibre reinforcement, on the other hand, only reduces the risk of tears and cracks for the first 28 days. Sufficient Thickness: Screed thickness is according to the kind of screed planned to put in, the thickness of the floor & its type, and additionally the intensity of estimated traffic. If you're looking for general-purpose cement, our 25kg cement bags can be used in concrete, mortars, renders and screeds. With over 60 options available spanning a variety of sizes, styles, colours and textures, we are proud to offer flagstone floorings that are the premier. #36 Sill Screed. Region. Customer Service. Weather Defence is a faster, safer way to a weather tight building compared to traditional sheathing board products. . Step Bead. 4 network in glass fiber certified ETAG 004 mesh 4x4 cm, with weight of 130 gr/mq, taking care to keep it raised from the ground such as to result insert on the first/third of the screed. Increased resistance to water and chemicals. Award-winning Isocrete K-Screed combines consistency, high strength, rapid installation and excellent moisture control with compatibility to a number of bolt-on subfloor systems includingOur experienced team ensure we achieve the exact order requirements to make sure to get what concrete and screed you want & delivered when you need it. W-S: #7 Weep Screed. A ready-mixed concrete specially designed as a durable direct floor finish, or as a substrate to screed. 6') SKU. Marshalls is the UK’s leading commercial paving supplier – delivering high quality products and solutions to the most groundbreaking projects and developments across the country. Screed Definition: “Screed is a combination of sharp sand and cement which is placed on top of a concrete base to provide a strong, stable, smooth surface on which a final floor layer can be placed”. K-Form is a 100% recycled PVC formwork and shuttering system used in the construction industry for Screed Rail, Concrete Slab Forming work & Concrete Paving / Forming. £35. colinthehamster Member. Rob […]The trial was a night project in late June with a haul time of almost one hour to the jobsite. A versatile product, Dunlop LX-360 Fibre Leveller is a fibre-reinforced smoothing compound. Eliminates concern associated with correct placement of reinforcement and correct cover. After screed has set or cured, the surface will be ready to have the final layer added to complete the concrete floor. TDP Concrete Fibres and Screed Fibres are made up of high tensile strength, polypropylene fibres, which disperse quickly and evenly when added into a mix of. Looking for a builders’ merchant in Isleworth? Looking for a timber merchant or a builders’ merchant in Isleworth? Located on Clock Tower Road, just off Worton Road, our Selco Isleworth branch is open 7 days a week, so you. Cementitious screeds should be reinforced with Q131 reinforcement mesh (wire distances 150x150mm, diameter of wire 5mm, for cementitious screeds with a minimum thickness of 50mm), welded wire mesh or polypropylene fibre. 1. Early Strength, a high early strength screed, and Readyscreed® Reinforced with added fibres for extra reinforcement. from £112. Cost-effective – compares favourably with the use of metal mesh. Fiber is available within 13. It?s also ideal for screeds, concrete or renders. You can use it to fix damaged spots in materials like brick, metal. Add polypropylene fibres to your screed, then add the recommended amount of water. Screed Material and Floor Screeds - Screed Material - Properties and Requirements when tested in accordance with BS 13892 Methods of Test for Screed Materials. D49 (or reinforced throughout with Isocrete PP Fibres with aReady Mix Concrete Prices in London. Whilst still being fast enough to receive tiles from 24 hours, and resilient flooring from only 7 days. Mobile App - Download the Smarthub mobile app on Apple or Google Play. 21m2 1. The terminology ‘screed’ is defined in accordance with BS EN 1318 as “Layer or layers of screed material laid in situ, directly onto a base, bonded or unbonded, or onto an intermediate layer or insulating layer, to obtain one or more ofScreed Volume Calculator. Calculator. No associated corrosion issues. Being inert and non-chemical, the polypropylene fibres are designed to disperse quickly and evenly strengthening the bonding of the mix during the curing phase (usually 28 days). p0056_fiber_universal_se_dop. Screed & Floor Levelling. 2. They are knowledgeable and friendly, and explain everything well and are always approachable. At MKM Building Supplies, your local building materials supplier, we have everything you need for your next construction or domestic project. Four different vegetal-dried fibers (hemp, flax, miscanthus, and bamboo) with dosages of 0. Surface Mount Casing Bead. D49 across day joints) to be supplied and laid on a sound and clean bituminous DPM. Helps reduce the risk of shrinking as the screed settles and dries. Beam and block floors incorporating loadbearing blocks Where load-bearing blocks are used (e. Turn your cards off and on, set spending limits, create transaction alerts, and more with built-in card controls. TDP 20mm Fibre Additives for Concrete and Screed are designed to minimize shrinkage and cracking. Award-winning Isocrete K-Screed combines consistency, high strength, rapid installation and excellent moisture control with compatibility to a number of bolt-on subfloor systems including SAVE even more with a Double Play or Triple Play Discount! Double Play - Choose ANY Live TV package with any internet package and save $5. • Interior or exterior uses. D49 Wrapping Mesh is manufactured from 2. LX-360 Fibre Leveller. Friction In this type of connection, energy is dissipated through friction when a slip occurs between connecting elements [26]. New. See full list on selcobw. Cement 25kg. Screeds are generally regarded as being dry when their moisture content has fallen to a level of 75% RH or below. You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long. Walkable in 3 Hours. Rapid setting and quick-drying properties ensure the floor can be. Because self levelling screeds are generally thin they tend to have shorter drying times. 2,940. The dry mix with added fibres was mixed forScreed is quite simply a thin, top layer of material laid over a concrete subfloor, that is traditionally made of sharp sand and cement, similarly to concrete. 2, 2, and 4 kg/m3. coatings and screeds Yield 75 m2 (5:1 + 3:1 coat) / 2. MOT Type 1 Crushed Limestone . 5 ratio of cement to sharp sand. Oscrete Sharp sand is used for a number of purposes, under Block Paving, Paving Slabs and artificial Grass, sharp sand grading is 0-4mm in sizeSharp sand can be used in the base of a trench to lay cables on, Sharp sand is also used for sand blasting too. ₹ 585/ Square Feet Get Latest Price. Screed Definition: “Screed is a combination of sharp sand and cement which is placed on top of a concrete base to provide a strong, stable, smooth surface on which a final floor layer can be placed”. Health and safety benefits. From basecoats and rollers to a range of levelling compounds, shop our floor levelling products from trusted brands. This is based on 20 degrees and 60 relative humidity. Upload your proof of business, fill out your details, and we'll give you your trade card number then and there so you can buy online and in-branch straight away. • Wetter slump allows faster compaction & screed placement. Ensure that fibres are evenly dispersed within the dry mix. Exterior foundation WEEP (sill) screed The FHA-7 is for hard-coat stucco, thin-veneer stone, and 1-coat stucco over foam applications. The screed on this paver spreads and smooths the asphalt. One major difference between semi dry and self-levelling screeds is the thickness. This type of screed is designed for maximum wear and tear and often requires additional aggregates to make it more durable. Our range of suspended ceiling systems is supplied by leading brands such as Zentia, Rockfon and Knauf AMF. The rooms are heated to a higher one and you can get cracking there. Floor Screeding; Underfloor Heating;. Typically used in construction to reinforce cement, screeds, concrete and renders. Four different vegetal-dried fibers (hemp, flax, miscanthus, and. 4. 21m2 1. TDP Concrete & Screed Fibres 100g | We are the UK’s largest independent builders’ merchant, supplying building materials to trade and DIY customers from over 250 locations across England, Scotland and Wales. Pour the mixture. The single pack cement-based smoothing compound leaves floors even and smooth. The arc-flash relay’s role in enhanced safety. Data Sheets. Fibres may be used to replace expensive steel wire fabric/crack control reinforcement. Coat Depth: Use Over Underfloor Heating. ON AVERAGE: £20 – £40 PER SQM. 0800 242 5589 - - [email protected] Drying, High Build, Fibre Reinforced Levelling and Smoothing Compound. The total asphalt cement binder was 6. Get a Trade Card. Fibres should be added to the screed mix in accordance with the manufacturer's instructions and screed recipe. It features Mouldblock™ Technology to give high quality moisture and mould protection, one of the best bonding surfaces for cement based tile adhesive and comes. Fibres may be used to replace expensive steel wire fabric/crack control reinforcement. 1B. As the binder is mixed under controlled conditions all that is required at site is the addition of a suitable aggregate and water thereby improving the control of components critical to the performance of the. These fibers can be used in lieu. uk. D49 Minimum Thickness Standard 40mm Heavy Duty 40mm (60mm for heavy traffic) FLOATING Insulation board or void formerIsocrete K-Screed reinforced throughout with steel fabric to BS4483 ref. Examples of typical mix designs for. Buy 3 for £55. If you go for a screed thickness of seven cm, you should provide 140 kg per m². Concrete Fibres 18mm Polypropylene Screed PP Fibres 150g - 1000g Bags. Used in conjunction with reinforcement this product is ideal for light industrial floors. £11. Fibreglass 1. Screed is applied to a concrete slab either directly or on top of damp proofing membrane and/or insulation layers . Anhydrite screed usually costs in the range of £15 – £20 per sqm,. Our range includes everything from threshold strip and scotia, to T section flooring trim and laminate pipe covers. As the fibres have excellent dispersion properties, no extra mixing time is required. At this point they are then suitable to receive moisture sensitive floor finishes such as vinyl etc. ARDEX manufacture a range of award-winning latex-based and water-based self levelling & smoothing compounds for internal and external use. Ideal for both steel and wood-frame construction. 1. If you have any admixtures to go in they should be added at this stage with the fibres and water. EPS grade R2 or concrete blocks with a compressive strength ≥ 7. 2. 14%. With a screed silo, the cement and sand are completely dry, so that the weight will be slightly lower per m³. Liquid screed is a pre-mixed, self-levelling, Pump applied, fibre reinforced liquid screed, delivered to site in a ready-mix concrete truck and pumped into place using specialized. Typical applications include, concrete floors, paths, drives, bases, footings, foundations, floor screeds etc. Smooths up to 5mm thickness neat, or 25mm thickness when bulked out. e. 99 Ex VAT £37. 2. Suitable for use on absorbent and non-absorbent interior floor surfaces including concrete, timber, cement/sand screeds, quarry tiles, terrazzo, asphalt and old but sound adhesive residues. Allows. Brand: J. DURABASE CI++ Crack-bridging decoupling mat with shearing force protection • Tiles can be laid once the subsurface can be walked on • Decoupling of problematic subsurfaces • Protecting against cracks The DURABASE CI++ multifunctional matting system, with its 3-layer construction, offers much more than decoupling. This tripping pulse is taken to the circuit breaker (s) that control the supply to the installation. We use fine, sharp sand, with a maximum grain size of about 4mm, mixed in with the cement. 5 ratio of cement to sharp sand. Chemicals such as SBR admixture can also be used to improve water resistance of screeds and mortars. 1B. Being inert and non-chemical,.