Altro Flow 1mm standard, Altro Flow 2mm standard and Altro Flow 3mm standard

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1 Atro Fow 1mm standard, Atro Fow 2mm standard and Atro Fow 3mm standard January 2019 Sef-smoothing epoxy fooring Technica and instaation data sheet Product description FeRFA type 5 Atro Fow 1mm standard, Atro Fow 2mm standard and Atro Fow 3mm standard are three-part sovent-free epoxy resin based sef-smoothing foor topping, which produce a smooth, attractive and easiy ceaned seamess foor. Atro Fow has a high goss finish but can be seaed with Atro Sea water based matt for an aestheticay peasing matt finish. Standard coours The Atro Fow variants are avaiabe in a range of 25 standard coours. Bespoke coours are avaiabe within constraints. In common with other epoxy products ighter coours wi be prone to cosmetic yeowing on exposure to UV ight. Singe coour high goss finishes may exhibit scratching and abrasion, this is particuary prominent in dark coours. A metaised maintenance coating, such as Atro Goss 211 can offer ongoing protection, subject to customer requirements and environment. Typica areas of use Production has (dry operations) Cean rooms Commercia corridors and offices Laboratories Dry storage areas Packing areas Advantages Ease of Instaation Ease of ceaning Good chemica and stain resistance Fuy bonded to the substrate Exceent decontamination Provides a seamess foor finish (substrate joints must be cut through) Sustainabiity Atro s steps to sustainabiity program seeks to optimise our performance with respect to the panet s resources. Pease refer to for further information. Chemica resistance Atro Fow variants offer good resistance to a range of commony used chemicas. However, premature contact with chemicas (incuding water) during the curing process may give rise to discoouration, staining and variation in goss. In a cases of chemica spiage, it is essentia that the spiage be immediatey removed and the surface washed down with cean water, removing water by wet vacuum after operation. Athough some chemicas may cause discoouration, this may not affect the durabiity and integrity of the resin screed. Pease refer to Atro and FeRFA Guidance Note No.3 for further information.

2 Typica physica properties Sip resistance We do not recommend Atro Fow where there is risk of a sip Usabe working ife C Speed of cure Light foot traffic - 48 hours at 20 C Fu cure 7 days at 20 C Bond strength EN 4624 B3,5 Impact strength ISO 6272 (2mm & 3mm variants) Reaction to fire EN IR2 CFL-s1 Packaging Atro Fow 1mm standard is avaiabe in a 16.6kg, three-part composite pack. Atro Fow 2mm standard and Atro Fow 3mm standard are avaiabe in a 24kg, three-part composite pack. Coverage Atro Proof standard 18m 2 per 6kg unit Atro Fow 1mm standard 10.7m 2 per 16.6kg unit. Atro Fow 2mm standard 6.7m 2 per 24kg unit Atro Fow 3mm standard 4.5m 2 per 24kg unit Atro Sea water-based matt (optiona cear cosmetic matt finish) Singe coat 100m 2 per 5kg unit Materia usage is dependent upon temperature, surface profie and porosity; stated coverage rates shoud be referred to for guidance ony and cannot be reied upon to determine exact quantities. Athough stringent quaity assurance processes are empoyed, when coour consistency is required a singe batch shoud be used. Storage Ensure that the product is received in good order and store in a dry, frost-free environment, ideay between 15 C and 20 C for at east three days before aying. It is important to maintain the aggregate temperature during storage. Low temperature in the aggregate wi adversey affect the product appication. Excessivey high and ow storage temperatures wi affect the aying performance of the product. Suitabe substrates Atro Fow may be appied to a variety of substrates incuding, but not imited to, concrete, poymer-modified cementitious screeds, terrazzo and 25mm marine grade pywood (consut Atro for further guidance). For a proprietary subfoor systems refer to the manufacturer for recommendations and seek further guidance from Atro. FeRFA, The Resin Federation, does not recommend Cacium Suphate, Anhydrite or Hemi-hydrite screeds for overayment Substrate requirements Substrates shoud be dry, structuray sound and free from contamination, friabe materias or aitance which may affect either the adhesion or penetration of the resin system. A residues of od paint coatings and dust must be removed. Substrates to achieve 26N/mm² compressive strength (BS EN :2001) and surface tensie strength 1.5N/mm² (BS EN ). Substrates must incude an effective damp-proof membrane and contain residua moisture not greater than 5% by weight (75% R.H.) to BS On substrates iabe to direct hydrostatic pressure such as some basements, ow ying buidings, in the absence of an integra DPM, a more substantia instaation may be required. Concrete foors must be constructed in accordance with the British Standards BS8204 Part 1, Code of Practice. Thin-bed synthetic resin systems foow the surface of the substrate, so it is essentia that the surface reguarity of fatness conforms to or exceeds BS cass SR2 (+/- 5mm under a 2 metre straight edge). Any deviation from this may require a surface improver to be appied which must be suitabe to receive an epoxy resin overay. Pease consut Atro or FeRFA Guide to the Specification and Appication of Synthetic Resin Fooring for further information.

3 Substrate preparation Surface preparation is the most vita aspect of resin fooring appication. Inadequate preparation wi ead to oss of adhesion and faiure. The substrate in question wi dictate the method of preparation. In the case of a concrete foor, preparation by dust encosed diamond foor grinder may be appropriate, or if of a sufficient area for economic reasons, shoud be ighty shot basted to eave a textured surface free from contamination. If the foor has been treated with a cementitious surface improver, then the surface shoud be prepared in accordance with the manufacturer s recommendations, or abraded with an STR machine foowed by thorough vacuuming. Treatment of oca repairs such as cracks and hoes, improvement or modification of eves and remova of high spots, shoud be undertaken prior to the fooring instaation. Appication onto cod substrates can give rise to pinhoes in the finished system if the ambient temperature rises during appication causing micro pockets of air in the concrete substrate to expand and be dispaced through the resin. Ambient and substrate temperatures shoud be raised prior to instaation, and kept constant during appication. Pease consut Atro or FeRFA s Guide to the Specification and Appication of Synthetic Resin Fooring for further guidance. Panning Before proceeding with the instaation, carefu consideration shoud determine the best way of instaing the Atro system. Efforts shoud be made to minimise day joints and optimise the open time of the product (i.e. minimise the distance between mixing and aying). It is best to aso consider the effect of externa infuences on the fina instaation (i.e. direction of ight from windows etc.). Time spent at this stage wi be invauabe towards the success of your instaation. The Atro Fow foor system is designed to be aid at a nomina 1-3 mm thickness dependent on variant used. Atro recommend that stainess stee mixing, aying and appication toos are used in this process. Meta transfer from mid stee toos may resut in discoouration of ighter coours which wi be unacceptabe to your customer. Pease contact Atro for further guidance. Appication The foowing appication guide is based on aboratory and simuated site conditions. However, when instaation conditions differ appreciaby from those detaied by Atro, the performance characteristics of both mixing and aying may not be as expected. To achieve the best resuts at a times pease endeavour to estabish the correct conditions which in turn wi aow the materias to be aid effectivey and meet your customer s expectations. Instaation conditions Appy in we ventiated areas. Both the sab and air temperature shoud be between 10 C and 25 C. It is not advisabe to mix and ay epoxy resin products outside of that range. Ambient conditions shoud be maintained at east 3 C above dew point or beow 75% RH during the initia stages of cure. At site temperatures beow 10 C cure times wi be substantiay increased uness some form of externa heating is used. Avoid using heating sources that give rise to high eves of humidity, such as those burning fossi fues. It must be recognised that the concrete sab temperature wi generay be ower than the air temperature, often as much as 10 C, and this wi govern the rate of cure. As the resin fooring cures, in condensing conditions moisture vapour may condense onto the surface and cause booming, a permanent couding of the surface. Do not ay the Atro Fow product on a raising thermometer as this can give rise to pinhoes. Raise the substrate temperature prior to appication and maintain the temperature of the substrate during appication. The workabiity, open-time, cure deveopment and return to traffic wi be significanty affected by ambient conditions. Mixing equipment Sow speed dri ( rpm), such as MM17 * Mixing padde, such as MR3 Mega Mixer MM22 with MR3 Padde Stainess mixing vesse, such as RM65 drum * * A too number references reate to Refina Ltd Priming the substrate In order to achieve a uniform finish, prevent bubbes and maximise substrate adhesion a primer shoud be used. An Atro primer shoud be seected which is suited to the instaation, and appropriate for the nature and moisture content of the substrate (seek further guidance from Atro). For Atro Fow variants Atro Proof standard is recommended. For substrates with greater than 75% RH BS 8203 an effective damp-proof membrane shoud be aid such as Atro Proof. Do NOT seed the primer with aggregate, experience shows that this can ead to pinhoes from entrapped air. Ensure that the substrate is we seaed and that a hungry areas are addressed before proceeding to insta the system. If the over-coating time period for the primer is exceeded, the surface shoud be ighty abraded and vacuumed before further coats are appied.

4 Product instaation Using a sow speed dri and whisk, thoroughy mix the base coour for 30 seconds unti uniform. Pour a the hardener contents into the base bucket and mix thoroughy for a further 90 seconds. The aggregate shoud be added graduay into the pre-mixed binder, whist continuing the mixing action, and mix for a further 2-3 minutes. Excessivey vigorous mixing shoud be avoided as this can ead to undesirabe air entrainment. Care shoud be taken to ensure that any materia adhering to the sides, bottom and corners of the mixer is thoroughy bended in. If the mixing area is not adjacent to the aying area the time required to transfer the mixed materia wi reduce the open instaation time. Remember to aways use the correct PPE. Decant a of the contents of the mixing vesse onto the foor and spread to the desired depth using a cean stainess stee trowe or a pin rake set at the desired depth. Spike roer the area immediatey, NOT beyond C. Do not exceed this time between gauges. Care shoud be taken to ensure the mixing vesse is kept free of any buid-up of contaminants which coud fa off and contaminate the foor. Over-coating In common with other singe coour high goss finishes, Atro Fow may exhibit scratching with traffic and abrasion, this is particuary prominent in darker coours. Any unduations and imperfections wi stand out in specific ighting conditions. This effect can be minimised by finishing the foor with a matt sea which wi diffuse the ight and hide unduations. To achieve a cosmetic matt finish, the appication of a singe coat of Atro Sea water-based matt can be appied not more than 24 hours at 20 C foowing the appication of the Atro Fow. Additives at the surface of the Atro Fow wi require remova prior to the appication of the Atro Sea water-based matt sea coat. This is to ensure effective intercoat adhesion. Cean the surface of the Atro Fow with Atro Sove EP or Atro Siicean without aowing ponding. Do not re-use paper towes as this wi have the effect of spreading any contaminants across the surface of the foor causing orange peeing in any subsequent coating. Pour the contents of the hardener into the base unit and thoroughy mix using a sow speed dri and padde for two minutes. Appy a very thin coat using a short nap synthetic roer appying the product to the foor from a paint tray. Heavy appication of this sea wi resut in an opaque appearance of the finished foor; therefore, care is required in its appication. It is important to note that enough time shoud be given to aow the Atro Sea water-based matt to reach its fu chemica cure. Physica drying of the surface aone is not indicative of the fu cure properties incuding wear and chemica resistance. Joints The spacing of movement joints must be determined by the design of the subfoor. A ive movement joints in the subfoor must be continued through the resin fooring. In a instances the type and positioning of movement joints shoud be agreed at the design stage between a parties concerned. Pease refer to Atro or FeRFA s Guide to the Specification and Appication of Synthetic Resin Systems for further guidance. A joints shoud be fied with Atro Expand fexibe jointing compound. Pease see Atro Expand data sheet for further information. Protection Whist of an extremey durabe nature these foor systems must by thoroughy protected from the rigours and abuse that exist during the ongoing contractua works. The resin foor shoud reach fu chemica cure in 7 days at 20 C. Untreated fet paper wi suffice as protection from ight traffic, however if protection is required from other trades then the foowing protection option shoud be considered. Where heavier access is required then a more suitabe medium to take the oadings, such as shuttering py or Correx by Cordek, shoud be paced on top of the untreated fet paper. The resin system shoud have cured for 48 hours prior to pacing the protection. No poyethyene sheets, inseed-treated hardboard, print or dyed card shoud be paced in contact with the resin surface. A joints in the protection medium shoud be taped, and a accidenta spiages shoud be recovered immediatey by remova and reinstatement of the protection. Damage wi occur to the guidance is not foowed. Ceaning (during instaation) A toos and equipment shoud be reguary ceaned using Atro Sove EP to reduce buid-up and maintain the quaity of the instaation. Ensure that the correct PPE is worn at a times. Disposa Due diigence must be adopted if accidenta spiages occur. Recover using absorbent granues, transferring into a suitaby marked container. Disposa of a empty containers and accidenta spiages shoud be in accordance with the oca waste disposa authority.

5 Ceaning guidance Optimum sip resistance and appearance can ony be maintained with reguar ceaning. Foors with sip resistance wi require mechanica ceaning; wet oop mop ceaning wi be ess effective but may be sufficient for routine maintenance of foors with a smooth surface. Microfibre ceaning systems shoud be sufficient for routine maintenance of foors with a smooth surface provided that a suitabe detergent / dosage is used and the microfibre pads are changed with sufficient frequency to ensure their effectiveness. Steam ceaners and / or hot pressure ceaners shoud not be used on the foor. A cod / ambient pressure washer may be used if required, but the pressure shoud not exceed 1400psi. Warm water wi offer improved ceaning, but the water temperature shoud not exceed 60 C. Entrance matting wi reduce ceaning requirements and shoud aso enhance the ongevity of the foor, when combined with correct maintenance. Sweep or vacuum the foor to remove debris For norma ceaning, diute an akaine detergent such, as Atro Cean 44 or simiar, by 1:40 in cean water Aternativey, diute by 1:20 for infrequent heavy ceaning Liberay appy the water and detergent soution to the foor, scrubbing with a deck scrubber or sow-speed (< 400rpm) scrubbing machine and Atro UniPad or simiar Pay particuar attention to areas where residues may accumuate, such as interna corners of perimeter coves and around coumns etc If possibe, aow the detergent soution to remain on the foor for severa minutes to break down deposits, but not sufficienty ong to aow the soution to evaporate Remove the soution by wet vacuum recovery and foow this with a fresh water rinse, or rinse the soution into drains if permissibe It is important that a detergent residue is removed from the textured surface of the foor. Detergent may become sippery which affects safety, or sticky which attracts and hods more dirt Pease obtain the correct materia safety data sheets from Atro prior to beginning your instaation. Aways wear correct PPE whist instaing resin products. Atro Fow, Atro Prime, Atro Proof, Atro Sea water-based matt, Atro Expand, Atro Sove EP, Atro Cean 44, Atro Unipads, mixing paddes and squeegees are avaiabe through the Resins Saes Desk. To order E-mai ResinSaesDesk@atro.com Ca Fax NOTE: Atro Ltd ( Atro ) endeavours to ensure that advice and information given in Product Data Sheets, Method Statements and Materia Safety Data Sheets (a known as Product Literature) is accurate and correct. However, where Atro has no contro over the seection of its products for particuar appications, it is important that any prospective customer, user or specifier, satisfies him / hersef that the product is suitabe for the intended appication. In this process, due regard shoud be taken of the nature and composition of the background / base and the ambient conditions both at the time of aying / appying / instaing / curing of the materia and when the competed work is to be brought into use. However, as site conditions and the execution of the work are beyond our contro, we accept no resutant iabiity. Atro s poicy is one of continuous research and deveopment and we reserve the right to update our products and information at any time without prior notice. If you d ike any more information or guidance pease get in touch, we re here to hep. te: fax: emai: enquiries@atro.com or expore