Acrylic renders are consisted of acrylic being a flexible and resistant type of plastic. The problem therefore is that when you come to repair it, the new layer of render does not seamlessly blend into the existing render. Acrylic render usage has increased rapidly in the last 10 years with one of the main reasons being the ease of mix. If the EPS comes away in your hand then the underlying render is sound. the this is the stuff to use – by the same token, this quick drying render is the one to use if you are installing in particularly humid or cold conditions since it will help minimise wash-off (when the render doesn’t stay in place due to rain or other unforeseen weather conditions!). I don’t have time to browse it all at the moment but I have bookmarked it and also added your RSS feeds, so when I have This ensures not only a flat surface on which to render, but also makes the system flexible so it can move as the building moves. Traditional renders comprise a mixture of sand, cement, lime, and chemicals. A typical example is a thermal insulation covered with thin-layer plaster. The aforementioned limitations must not be neglected as it may lead to increase of thermal-insulation material moisture, fungi development and plaster coming off the facade. The price tag: The cost of acrylic render is usually greater than that of cement render for several reasons: 1. In case of polystyrene insulation usually there is no problem with vapour permeability and there the acrylic plaster is suitable. The peak is during the heating season, when temperatures between the interior and exterior are significant. To remove them, float the area again with your acrylic trowel. I think the older houses just tend to move a bit more, which creates more cracking on the renders. When render gets repaired, it normally requires patches to be applied, i.e. Our choice is acrylic, and here's why. So why do people use it? Which thin-layer plaster to choose is one of the most important decisions during walls insulation. Each of the silicone renders has a different price but it is worth mentioning that all renders are going to cost more than acrylic render because you are getting a vastly better product. Used the silicone render and it is good gear. When used over a quality render you should expect a 20 year + lifespan. You don’t need to apply more than two coats of acrylic in this kind of rendering. Silicone’s complex structure (making it more expensive) it is a more superior product to acrylic. Once they do get soiled and tired they can be freshened up by painting with a silicone smooth paint which can be roller applied. Above all, they feature high resistance to water and are available in a wide range of colours. It’s a mark of quality, safety and reliability that provides reassurance that the product’s fit-for-purpose. With regards to silicone render, I understand that it is extremely difficult to repair. The applied finish is then rubbed-up and textured with a plastic float to the grain size. If you’re looking at getting an idea of how much coloured render costs per m2, then check out our blog post which gives a really comprehensive idea of all the components. e.g.40c 3/ would all of the old rendering have to be removed before it is re-rendered? Hello do you sell silicone render with anti fungal solution. Simply, polystyrene features very high diffusion resistance and only small amount of water vapour is able to penetrate it to the plaster. Silicone render. Silicone/Acrylic render. EWI-333 – SiSi Primer The Acrylic is normally the cheaper option and this is the one which will discolour over time. An acrylic render is a render with acrylic resin added to it, which is a type of plastic and gives the render a certain amount of elasticity making it waterproof and stain resistant. Well, in this blog we thought we would try and explain the differences so you can pick the right render for your next job! The original coating would have been lime wash but I still am a little nervous about putting a resin type coating over lime render. Generally, modern render can be divided into three main types: mineral, acrylic and silicone – but there are other options, as I’ll present later. EWI STORE 2014 - 2020 All rights reserved /. EWI-220 – Basecoat Adhesive The Silicone Silicate render comes in a few various different textures, but by far our most popular is the 1.5mm render (read our full guide to render grain sizes). Acrylic plasters Acrylic plasters TA 11 Acrylic Render See more form a water vapour barrier (feature high diffusive resistance), whereas silicone ones are vapour permeable. Your email address will not be published. Acrylic plasters are not intended as a finishing layer for thin-layer walls of aerated concrete … Looking around the EWI store website I see you do a silicone render. Always use silicone based renders. In addition, EWI Pro Acrylic render is not worth installing when the weather isn’t very good, so cold or wet as it takes longer to dry than the Mineral Render system. It has mesh as one layer and a choice of co!ours. If you are looking to install render / EWI then this is the one to use. Acrylic is mostly used as a top coat, which means it requires an additional base coat to be applied first. Silicone render also has self-cleaning properties, which means it is less prone to organic growth. wall) without mixing it first with water. Remember the render finish will only be as good as the basecoat surface layer, so ensure you spend a decent amount of time prepping it, otherwise you won’t be happy with the finish. If you do their training then you get discount card for this store. Acrylic plasters are not intended as a finishing layer for thin-layer walls of aerated concrete blocks and porous ceramics, where the thin-plaster is applied as the final finishing layer onto the traditional cement and lime plaster. They are mineral, silicone and silicate plasters. Chessington This can be done with Acrylic, Silicate, Silicone or Mineral. The flexible anti-crack formulation and ultra-violet resistant pigments of a silicone or acrylic render allow for large areas to be seamlessly rendered with perfect colour consistency. In most cases nowadays, acrylic render is … It has a lot of rendering. Acrylic render is widely used and therefore is now produced by big manufacturers including Rockote, Unitex and Dulux Acratex. Acrylic render provides a highly durable, colour fast and anti-crack finish, offering much greater levels of flexibility and weather protection over that of traditional base renders. Hi David, Subscribe to the newsletter - you will be up to date, the first to find out about promotions, discounts. 0203 3974067, Aylesbury am here now and would just like to say kudos for a fantastic post and a all round thrilling blog (I also love the theme/design), Vapour penetrates the wool but cannot leave it as it is blocked by the plaster. Reading this blog is actually quite upsetting since we asked our installer to install the best materials and he charged us more to install acrylic render. I have read on line that some types of render go green if you live in these kind of places. Photo by Parex. We are buying a house in Cyprus and, as many houses there, some of the rendering is crumbling. Render suits traditional homes just as well as contemporary — this traditional oak-frame self build by Border Oak home combines a gable with exposed oak frame with lime render (Image credit: Jeremy Phillips) Acrylic renders are most often applied as a thin finish coat to seal and enhance the appearance or the underlying coat. Lost password? Well there are a few reasons – firstly it is cheap in terms of material costs. A cement-based render system incorporating silicone, it offers a number of advantages over traditional solutions. A good render base for the silicone would be a polymer render, reinforced with nylon mesh. Here are the key reasons we chose this modern option: 1. Acrylic Resin is a type of plastic and added to render it helps offer better stain and water resistance as well as greater resistance to cracking. Required fields are marked *. an area of wall around the damaged area is taped off (ideally a square) then the damaged material is cut out. Acrylic render vs Silicone render. The most important difference is vapour permeability degree, i.e. Can I please ask what is the four layer silicone render? Do any of these different types of render resemble pebble dash. What is your view? A quick response would be appreciated. All the renders are also flexible (as per the article above) so when they are applied on the EWI-220 basecoat layer, you get a flexible system that should move with the natural movement of your property and therefore no more cracking! Hi Dan, thanks for your comment. Do you sell a render that will help prevent algae / vegetation taking hold on the render? Customers will come back! Surrey, KT9 1DQ 2. At some time in the past it was painted. Acrylic Render is actually defined as any type of render in which acrylic has been used. The total basecoat layer (sometimes referred to as the reinforcement layer) should be 4-6mm thick and ideally the mesh will sit within the middle of this. K Rend Alkali Resistant Reinforcement Mesh. Normally these need only one coat of 1mm-4mm thickness, but this is highly influenced by the substrate material used under the render. To find EWI Pro installers click on the following link: http://ewipro.com/installers-directory/. Acrylic is a plastic material, and you can spray, roll or trowel it on your walls. External Wall Insulation, Installing Render and EWI During the Winter Months, Acrylic Render vs. We want to get our house re-rendered, but I am just wondering if the existing render needs to be stripped before applying the new render. In terms of installs around the country, Mineral Render is particularly popular in both Wales and Scotland due to temperature and volume of rain. by error, while I was looking on Aol for something else, Regardless I Consequently, acrylic plasters are not suitable for mineral wool insulation, whereas silicone can be applied both on polystyrene and mineral wool. Acrylic plaster can be washed e.g. check out my web site as well and tell me how you feel. Not registered? Hi Susan, You can remove where it is coming away from the wall and use our filler to smooth the surface ready for the basecoat. With over 15 years of experience we have completed hundreds of acrylic and silicone renders for residential and commercial customers in Leeds, Bradford, York, and throughout Yorkshire. Practically, what happens is that Acrylic Resin is added to render, making it Acrylic Render and it typically comes in pre-mixed tubs. and we want to make it as easy to maintain as possible. It is applied to new and existing render to seal and enhance the appearance. After looking into a few of the articles on your website, I truly appreciate your technique of Some products can also incorporate silicone. It is comprised of Silicone resin and Silicate. This means that within the render, it has Silicate granules just 1.5mm in diameter, so it can be applied extremely thinly on the wall – the advantage of this is that it is extremely flexible, so the house moves and the render moves with it. Acrylic render does offer breathability, however it isn’t quite at the level that silicone render can provide. Sign Up! Once the Mineral Render has been applied it needs to be painted with our EWI pro Silicone paint which will provide a long lasting barrier to the elements and obviously can be coloured to your requirements. If when you pull the EPS, it comes away with the adhesive and the existing render then you are better off stripping that area of existing render before you start. Teflon™ is a registered trademark of Chemours used under licence by FFiL Śnieżka SA, We use cookies to facilitate the use of our site If you do not want cookies to be saved on your disk, please change your browser settings Please read our, Acrylic vs. silicone plaster - get to know the core differences. We always use a Silicone based render. Consequently, acrylic plasters are not suitable for mineral wool insulation, whereas silicone can be applied both on polystyrene and mineral wool. Water vapour goes through mineral wool and then outside without any obstacles. However, contrary to common belief to provide so called “breathing walls”, it’s not about ensuring a large amount of water vapour. Silicone and acrylic rendering is the most expensive out of all the render only systems. Simply put, render is a paste-like substance used on interior and exterior walls. Can this be put on in the winter months? Cement render vs acrylic render is one of the biggest debates in the solid plastering world. 1m x 50m Fiberglass Reinforcing Mesh used for external wall insulation systems, mineral, acrylic, silicone and silicate renders. 01296 821067. We use the word “usually”, as in peculiar cases, for example, while insulating walls of aerated concrete blocks with a thin polystyrene layer (e.g. K Rend silicone render range incorporates silicone water repellents as an integral part of the cement based render system. One particular difference is in terms of the price tag. This is because the price of materials are larger and also there is more work involved as each system requires 3 coats, even though it is only 6mm thick. Is there a difference in the look of the finish, as all the properties we went to see before picking this installer were silicone finish. If it is mineral wool, which features very little diffusion resistance, also subsequent layers, i.e. Silicone render is our preferred choice as it offers better durability and colour retention compared with acrylic render. When mixing acrylic render you cannot really mess up the mix, but you need to make sure the mix is consistent for application. Once this has been done, let it go off, then prime the surface and apply the top coat render. 4/ If applied over the existing render would it stabilise the old render or would it cause problems as the old render continues to degrade? We sell the EWI Pro acrylic render pre mixed with your colour of choice and what is really great about it is when you opt for a vibrant colour, the acrylic render will hold this colour for a long time without fading (the other renders and the Silicone Paint will fade over time so may require painting every 10 years or so). Shopping list: Kingspan K5 external wall insulation system, Shopping list: EPS external wall insulation system, Shopping list: rendering a render carrier board, Replacing pebbledash with coloured render, All the renders we sell in the EWI Pro Insulation System range, Thermal Render vs. Kingston Business Centre Acrylic is a high performance cementous free decorative top coat used on most reinforced polymer modified base coat adhesives. No cracks Well for years has been the installers render of choice – it is essentially a render containing acrylic resin. For Acrylic R Finish, the method of texturing allows the creation of linear (vertical, horizontal or diagonal) or non-linear (circular, swirling) patterns in the finished surface. We note several key distinctions between cement render and acrylic render. WHAT MAKES SILICONE RENDER DIFFERENT? Acrylic Render is the most cost effective render when you consider the labour and material costs – requiring just one application. If you are unsure how strong it is, we do recommend doing a pull test, this involves using our EWI-220 adhesive and sticking a few bits of the EPS insulation to the wall. the repair is still visible to the eye. It is a high tensile strength mesh coated with acrylic acid copolymer liquid, and is water, alkali resistant. Other differences between acrylic and silicone plasters are no longer of fundamental importance. Once dry Acrylic K & R Finishes (pre-tinted in colour) are ready to use and are applied onto the prepared surface by stainless steel trowel or using spray equipment. Parextherm Acrylic and Siloxane render systems have been specially developed for direct applications onto approved render board systems but can also be applied directly onto suitable masonry substrates. It simply won’t crack!! Factors to take into consideration before rendering - Suitability, Texture, Colour, Cost and Longevity. Most renders are difficult to repair only in that the thickness of the rend is extremely thin when applied to the wall. As we will find out, the price does not determine the core difference between them. They are the easiest to apply and look very nice when finished. It also requires painting afterwards, which means it is a bit more time intensive to install. It is highly durable and corrosion resistant.CHARACTERISTICSH.. Make sure there are no drips or trowel marks on the render. If you are looking for the best value system then this in our opinion is the best and certainly a huge improvement on the old sand and cement renders of the past – it is flexible and will last 20 years plus. Whilst silicone render could be considered the slightly … The Wetherby silicone and acrylic render systems provide superb quality, ease of application and a superior colour range. Silicone render is self-coloured. 1/ Do you know if silicone or acrylic rendering can be obtained in Cyprus? Dampened wool loses its thermal insulation properties and creates conditions suitable for development of fungi. It is going to cause problems down the line as it bubbles when water tries to escape. We have been quoted Whetherby Silicone render from another company, I can’t seem to find the difference between the Silcone render and the Silicone Silicate render that you offer which I guess is the nearest equivalent? Links to products: EWI-040 – Silicone Silicate render. kudos, London i.e. It now needs some repairs to the rendering and a new coat. The prices also about as competitive as you can find in the industry. If you are doing the install yourself and it is during the summer months, the other renders just require the one coat (the colour is within the render itself) so you won’t have to paint anything once the render has been applied. Would it be the Silicone Silicate render? From what I read here it is definitely not a premium product. That is my advice and I have been doing this for 18 years! Silicone technology imparts a high degree of water repellency to the render system allowing the substrate to breath. Cement render comes dry, i.e., requires hydration to activate, acrylic render comes already wet, i.e., in a pale or a bucket. Acyclic is available in pre-mixed buckets, which usually have more elements than the cement render equivalent. They promised great prices and great customer experience. Acrylic render vs cement render. Why use Fibreglass Mesh in Render Systems? we were contacted by EWI pro at the end of last year. Very good renders on this site! One of the greatest doubts with regards to facade’s rendering is whether to apply cement render or acrylic render. What do acrylic and silicate plasters have in common? Silicone plasterSilicone plasterTN 30 Silicone RenderSee more is a lot more resistant to dirt and in areas exposed to rain it can clean itself (so-called self-cleaning effect) . Plz answer back as I’m looking to design my own blog and would like to find out where u got this from. I want to render my home – we have a mid terrace and I want to know which product to use. What is Acrylic Render? We normally advise customers to go for the Silicone render or Mineral render (if in damp / cold conditions) but there are still a huge number of installers out there who always buy acrylic render, I think just because this is what they have done previously and it does go on the wall nicely! Save my name, email, and website in this browser for the next time I comment. Consequently, the thermal insulation is subject to dampening as the vapour starts condensing (the temperature under the plaster layer is low, close to the environment temperature). Unit 1 Silicone Silicate Render Acrylic Render vs Cement Render: Residential and Commercial Rendering Services. Faraday Road Did you design this website yourself or did you hire someone to do it for you? We are looking for a very fine render finish. It seems in relatively good shape on the whole but there are a couple of areas where it seems to be coming away from the wall a bit. As you might expect we get asked a lot what the difference is between these types of render and which is the best? Even though the final appearances of both renders are selfsame, their methods of … will last the longest. Acrylic render and Monocouche Scratch render. It is apparently originally a German invention. Finally Acrylic render is not as resistant to the elements as our Silicone Silicate render, so there will be some maintenance required like cleaning over time. I’m thinking of getting external wall insulation on my cottage. To achieve this, the 220 is prepared with water as per the instructions to make a putty. 5 cm), it may lead to moisture condensing under the plaster. Our acrylic render comes pre mixed; this means that it can be applied straight on to the substrate (e.g. . Hi John, Acrylic Render Acrylic render is a finishing coat for render, containing aggregates to display an attractive finish. External wall insulation Materials Calculator. Very happy . An issue is a situation when vapour penetrates the wall from rooms, but cannot leave it. Parexdirect Acrylic Render System. Here at EWI Store, we source our renders from EWI Pro who offer a broad range of BBA Approved renders. Additionally, you will obtain a free of charge e-book - Colour Guide. External wall insulation can be polystyrene, mineral and rock wool, phenolic foam, PIR (poly How do these modern renders compare to the sand and cement renders from the older days? Mineral Render vs. Silicone Silicate Render, Best way to install K1 Silicone K-Rend scratch render. Render is on the rise, transforming the look of homes across Australia. What do I need for rendering in the Winter? Silicone or silicone silicate render is a top of the range system that has a number of fantastic advantages. Which render do you recommend as the climate over here is unpredictable? For a 1.5mm render this will end up between 1.5mm and 2.0mm thick. Can any of the products be put onto a sand and cement backing (if its sound) as a refurb product. Acrylic Render Vs Cement Render. This gives these new render finishes a flexibility that you just don’t get with standard sand and cement renders. Silicone/Acrylic based, through-coloured, decorative finish, for use as a decorative, highly weather resistant, vapour permeable surface, which comes in tubs, pre-coloured ready to be applied to a prepared surface. Please Silicone-silicate renders present a perfect mixture of silicone and silicate renders combining and emphasizing basic advantages of both render types. Is that the same as the silicone silicate render or is it different? Consequently, its concentration is increased and water starts condensing. using a pressure washer, but it is not an easy task to do, particularly in case of a multi-storey building. In addition, EWI Pro Acrylic render is not worth installing when the weather isn’t very good, so cold or wet as it takes longer to dry than the Mineral Render system. Thanks in advance for your help. Hi there, I live in the Scottish Highlands. Also, it is not suitable for renovating dampened walls, as they prevent water from evaporation. This will flatten the render and reduce the thickness to just more the the aggregate size. If you are looking to buy acrylic render then you should just get out the game. From what we have witnessed so far they weren't wrong! Acrylic Render. avoid acrylic render. I would like to receive news and offers from EWI Store, Your email address will not be published. With EWI majority of the time the Render put over the top has a 1.5mm aggregate. writing a blog. Our external wall insulation installer quoted us for a Silicone render and now due to the colder weather he is suggesting Mineral render. Bicester Road Industrial Estate This is particularly useful in areas where the weather changes dramatically throughout the year. To learn more about the BBA and the EWI Pro Insulation System products please click here. While we don’t like the stone pebble dash, we do want to recreate the same texture. Then try and pull the EPS off the wall. I bookmarked it to my bookmark webpage It’s worth pointing out, that this principle also applies to facade acrylic paints. Also I have read about the base coat – do all the renders require this? If you would like to get a quote for any of these materials try our new materials calculator by clicking on the picture below. Thus, silicate plaster is a far better choice in areas where air is polluted, close to busy roads etc. Acrylic is less resistant to extreme weather conditions due to the fact that it doesn’t contain silicone. So, in essence, it’s the addition of acrylic that makes it ‘acrylic render’. Vicrender work with different types of clients. They all can, but start at the basecoat layer, so use EWI-220 + embed the mesh first. We are putting an extension on at the moment so I think we will render that on top of the remaining wall to tie everything in together.