Lost password? External Wall Insulation, Installing Render and EWI During the Winter Months, Acrylic Render vs. Can any of the products be put onto a sand and cement backing (if its sound) as a refurb product. 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. Subscribe to the newsletter - you will be up to date, the first to find out about promotions, discounts. No cracks Aylesbury, HP19 8RY Acrylic is a plastic material, and you can spray, roll or trowel it on your walls. With EWI majority of the time the Render put over the top has a 1.5mm aggregate. I think the older houses just tend to move a bit more, which creates more cracking on the renders. Whilst silicone render could be considered the slightly … The material of the property to be rendered has to be considered carefully when using silicone render, the materials suitable being … Water vapour goes through mineral wool and then outside without any obstacles. Nevertheless, the most popular renders within the EWI Pro catalogue are the Mineral Render, Acrylic Render, Silicone Silicate Render. 2/ will either of these stand up to high temperatures. Factors to take into consideration before rendering - Suitability, Texture, Colour, Cost and Longevity. Mineral Render vs. Silicone Silicate Render, Best way to install K1 Silicone K-Rend scratch render. Why use Fibreglass Mesh in Render Systems? The technical team are very knowledgable and they really do bend over backwards to help. Thanks in advance for your help. by error, while I was looking on Aol for something else, Regardless I Always use silicone based renders. Photo by Parex. Probably the biggest attraction of our silicone render is that the colour (there are 20 standard options) is embedded into the topcoat. Do you sell a render that will help prevent algae / vegetation taking hold on the render? 01296 821067. 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. Whether it’s a classic Silicone Render or a traditional Monocouche render you’re after, we can cater to all requirements! This gives these new render finishes a flexibility that you just don’t get with standard sand and cement renders. 2. 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. In terms of cracking, the new renders do tend to be better because they have a flexible basecoat layer – this is basically a layer of EWI-220 with our EWI-640 mesh embedded within it. a reinforced adhesive layer, thin-layer plaster and a paint must be vapour permeable. 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. Simply put, render is a paste-like substance used on interior and exterior walls. Silicone-silicate renders present a perfect mixture of silicone and silicate renders combining and emphasizing basic advantages of both render types. 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 writing a blog. 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. This is now our installer’s render of choice – the EWI Pro Silicone Silicate render is ready mixed (much like our Acrylic Render) and therefore can be applied straight to the substrate. EWI-6640 – Fibreglass mesh Hi Dan, thanks for your comment. And, because of the acrylic in the mix, this type of render is more flexible so it's longer lasting and less likely to crack. Acyclic is available in pre-mixed buckets, which usually have more elements than the cement render equivalent. K Rend Alkali Resistant Reinforcement Mesh. Recover! EWI-040 – Silicone Silicate render. They are the easiest to apply and look very nice when finished. 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. 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? In case of polystyrene insulation usually there is no problem with vapour permeability and there the acrylic plaster is suitable. If the EPS comes away in your hand then the underlying render is sound. Would it be the Silicone Silicate render? Hi David, Vapour penetrates the wool but cannot leave it as it is blocked by the plaster. The problem therefore is that when you come to repair it, the new layer of render does not seamlessly blend into the existing render. It is the easiest system to apply, it is hydrophobic (which makes it a self-cleaning render), and it is the most flexible system on the market, making cracking over its lifetime less likely. You can remove where it is coming away from the wall and use our filler to smooth the surface ready for the basecoat. Acrylic render is widely used and therefore is now produced by big manufacturers including Rockote, Unitex and Dulux Acratex. Replacing Pebbledash with Coloured Render? ANy help would be hugely appreciated. They all can, but start at the basecoat layer, so use EWI-220 + embed the mesh first. From what I read here it is definitely not a premium product. EWI - Insulated Render SystemsAcrylic renders Mosaic renders Mineral renders Silicone rendersSilicate RendersExternal wall insulation system functions as a thermal insulation barrier, and a protective layer. 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. Let’s look at some advantages of acrylic rendering. Acrylic render is a resin based render that is weather resistant, durable and flexible. Secondly mineral render dries much quicker than all the other types of render we offer so if you are installing in wet climates (I know most of the UK is normally under the water!) Acrylic plasters Acrylic plasters TA 11 Acrylic RenderSee more form a water vapour barrier (feature high diffusive resistance), whereas silicone ones are vapour permeable. Make sure there are no drips or trowel marks on the render. What do acrylic and silicate plasters have in common? It is comprised of Silicone resin and Silicate. 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! To remove them, float the area again with your acrylic trowel. 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. K Rend silicone render range incorporates silicone water repellents as an integral part of the cement based render system. When render gets repaired, it normally requires patches to be applied, i.e. Is silicone silicate really worth the extra money? 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. 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. For a 1.5mm render this will end up between 1.5mm and 2.0mm thick. wall) without mixing it first with water. The EWI Pro Silicone Silicate render is completely breathable so is the ideal partner for our mineral wool insulation products. Practically, what happens is that Acrylic Resin is added to render, making it Acrylic Render and it typically comes in pre-mixed tubs. Simply, polystyrene features very high diffusion resistance and only small amount of water vapour is able to penetrate it to the plaster. Silicone or silicone silicate render is a top of the range system that has a number of fantastic advantages. Can you get a warranty against cracking? Very good renders on this site! It is apparently originally a German invention. It’s a mark of quality, safety and reliability that provides reassurance that the product’s fit-for-purpose. Mineral render is also breathable and therefore compliments our Rockwool (Mineral Wool) insulation very well. With regards to silicone render, I understand that it is extremely difficult to repair. Sign Up! One of the greatest doubts with regards to facade’s rendering is whether to apply cement render or acrylic render. It now needs some repairs to the rendering and a new coat. 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. Once this has been done, let it go off, then prime the surface and apply the top coat render. If you are looking to render bare brickwork, we would always recommend adding the basecoat layer – this is the layer of adhesive that has the embedded mesh. Apply a coat of PermaRock K & R Primer (colour to suit) onto the Base Coat by roller or brush. Customers will come back! 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. 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. 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. Our choice is acrylic, and here's why. Acrylic renders are consisted of acrylic being a flexible and resistant type of plastic. Hi John, We always use a Silicone based render. Acrylic is a high performance cementous free decorative top coat used on most reinforced polymer modified base coat adhesives. Some products can also incorporate silicone. Consequently, its concentration is increased and water starts condensing. Consequently, acrylic plasters are not suitable for mineral wool insulation, whereas silicone can be applied both on polystyrene and mineral wool. If you do their training then you get discount card for this store. Well for years has been the installers render of choice – it is essentially a render containing acrylic resin. Note that the effects of adding a silicone render to a property will not be immediately obvious compared to traditional cement or lime render. Acrylic render and Monocouche Scratch render. 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). Silicone’s complex structure (making it more expensive) it is a more superior product to acrylic. the repair is still visible to the eye. Generally, modern render can be divided into three main types: mineral, acrylic and silicone – but there are other options, as I’ll present later. like to find out where u got this from. The original coating would have been lime wash but I still am a little nervous about putting a resin type coating over lime render. Cement Render x Acrylic Render – What are the differences? 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. But wait - what if you are not even exactly sure what rendering is? It simply won’t crack!! Silicone technology imparts a high degree of water repellency to the render system allowing the substrate to breath. Unit 1 Acrylic render does offer breathability, however it isn’t quite at the level that silicone render can provide. Plz answer back as I’m looking to design my own blog and would 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. 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. We live in a woody area. Acrylic render is available in a wide range of colours and textures ranging from 1mm to 3mm aggregate size. To find EWI Pro installers click on the following link: http://ewipro.com/installers-directory/. Our external wall insulation installer quoted us for a Silicone render and now due to the colder weather he is suggesting Mineral render. Acrylic plaster can be washed e.g. Did you design this website yourself or did you hire someone to do it for you? While we don’t like the stone pebble dash, we do want to recreate the same texture. Our acrylic render comes pre mixed; this means that it can be applied straight on to the substrate (e.g. In terms of installs around the country, Mineral Render is particularly popular in both Wales and Scotland due to temperature and volume of rain. 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. WHAT MAKES SILICONE RENDER DIFFERENT? The peak is during the heating season, when temperatures between the interior and exterior are significant. Our EWI Pro Mineral render is the only one to come as a dry mix – you need to add water to it before applying it. Not registered? list and will be checking back soon. If it is mineral wool, which features very little diffusion resistance, also subsequent layers, i.e. Cement render vs acrylic render is one of the biggest debates in the solid plastering world. and we want to make it as easy to maintain as possible. Silicone and acrylic rendering is the most expensive out of all the render only systems. Can this be put on in the winter months? After looking into a few of the articles on your website, I truly appreciate your technique of 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. How do these modern renders compare to the sand and cement renders from the older days? Your email address will not be published. Silicone/Acrylic render. Acrylic render usage has increased rapidly in the last 10 years with one of the main reasons being the ease of mix. Hey there I am so happy I found your blog, I really found you A typical example is a thermal insulation covered with thin-layer plaster. Also I have read about the base coat – do all the renders require this? In most cases nowadays, acrylic render is … They promised great prices and great customer experience. I’m thinking of getting external wall insulation on my cottage. Bicester Road Industrial Estate 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? Acrylic Render Acrylic render is a finishing coat for render, containing aggregates to display an attractive finish. The applied finish is then rubbed-up and textured with a plastic float to the grain size. 0203 3974067, Aylesbury 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). will last the longest. 1m x 50m Fiberglass Reinforcing Mesh used for external wall insulation systems, mineral, acrylic, silicone and silicate renders. 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. Is that the same as the silicone silicate render or is it different? . Thus, silicate plaster is a far better choice in areas where air is polluted, close to busy roads etc. Vicrender work with different types of clients. Very happy . When used over a quality render you should expect a 20 year + lifespan. Some installers do indeed offer warranties, we do run training with EWI Pro, one of our main system manufactures – if you go to their site you can find local installers who should 1. know what they are doing and 2. offer warranties! That is my advice and I have been doing this for 18 years! Acrylic Render Vs Cement Render. External wall insulation can be polystyrene, mineral and rock wool, phenolic foam, PIR (poly A good render base for the silicone would be a polymer render, reinforced with nylon mesh. This will flatten the render and reduce the thickness to just more the the aggregate size. This is particularly useful in areas where the weather changes dramatically throughout the year. Hi Susan, Please Parexdirect Acrylic Render System. I have a solid brick walled house built in 1916 which is lime rendered. 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. In a word yes – it is breathable and therefore moisture stuck in the brick work can dissipate through it. It is applied to new and existing render to seal and enhance the appearance. Again, much like the Acrylic render we don’t advise installing this render during the harsh winter months or when it is raining as the system does take a few days to cure – but once installed it should be maintenance free for over 20 years although it make require the odd pressure spray from time to time to keep it nice and clean. 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. If you are looking to buy acrylic render then you should just get out the game. Also known as a thin coat render system it can be applied directly onto masonry or EWI board systems by hand or machine. Acrylic Render. 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. Most renders are difficult to repair only in that the thickness of the rend is extremely thin when applied to the wall. avoid acrylic render. It is a high tensile strength mesh coated with acrylic acid copolymer liquid, and is water, alkali resistant. However, contrary to common belief to provide so called “breathing walls”, it’s not about ensuring a large amount of water vapour. I would like to receive news and offers from EWI Store, Your email address will not be published. They are mineral, silicone and silicate plasters. time I will be back to read a great deal more, Please do keep up the awesome work. 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. Links to products: So in terms of comparing it to acrylic render, you’ll probably need to clean acrylic more regularly than Silicone. 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). 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), Thanks. From what we have witnessed so far they weren't wrong! Save my name, email, and website in this browser for the next time I comment. It also requires painting afterwards, which means it is a bit more time intensive to install. We note several key distinctions between cement render and acrylic render. It’s worth pointing out, that this principle also applies to facade acrylic paints. This time we are going to compare acrylic and silicate products. 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) . One of the most frequent questions we are asked at Rapid Rendering, is whether clients should opt for acrylic render or cement render? It has mesh as one layer and a choice of co!ours. Which thin-layer plaster to choose is one of the most important decisions during walls insulation. Acrylic is less resistant to extreme weather conditions due to the fact that it doesn’t contain silicone. Normally these need only one coat of 1mm-4mm thickness, but this is highly influenced by the substrate material used under the render. Hi there, I live in the Scottish Highlands. Hi DaveOmell, it really depends as you have alluded to on the existing render and how good it is. kudos, London The Acrylic is normally the cheaper option and this is the one which will discolour over time. we were contacted by EWI pro at the end of last year. 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. Do not apply the top coat render to a wet base coat. Chessington Additionally, you will obtain a free of charge e-book - Colour Guide. It has a lot of rendering. The most important difference is vapour permeability degree, i.e. As we will find out, the price does not determine the core difference between them. A cement-based render system incorporating silicone, it offers a number of advantages over traditional solutions. As you might expect we get asked a lot what the difference is between these types of render and which is the best? It is going to cause problems down the line as it bubbles when water tries to escape. EWI STORE 2014 - 2020 All rights reserved /. Used the silicone render and it is good gear. Acrylic Render is the most cost effective render when you consider the labour and material costs – requiring just one application. I have read on line that some types of render go green if you live in these kind of places. Dampened wool loses its thermal insulation properties and creates conditions suitable for development of fungi. Above all, they feature high resistance to water and are available in a wide range of colours. I love your blog.. very nice colors & theme. 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. If the extension is brickwork can the render go straight on to this? The Acrylic Resin / plastic in this render means that nothing is going to get through it, therefore it is definitely not worth putting it on a breathable insulation product like our Rockwool or Wood Fibre as it sort of defeats the point! using a pressure washer, but it is not an easy task to do, particularly in case of a multi-storey building. What do I need for rendering in the Winter? So why do people use it? Well, in this blog we thought we would try and explain the differences so you can pick the right render for your next job! diffusion resistance. Cement render comes dry, i.e., requires hydration to activate, acrylic render comes already wet, i.e., in a pale or a bucket. What is Acrylic Render? check out my web site as well and tell me how you feel. 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. Surrey, KT9 1DQ 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!). EWI-220 – Basecoat Adhesive 1/ Do you know if silicone or acrylic rendering can be obtained in Cyprus? If you are looking to install render / EWI then this is the one to use. Then try and pull the EPS off the wall. Before you use the acrylic render though just a couple of things to consider – firstly it is not breathable. 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. Weather changes dramatically throughout the year principle also applies to facade acrylic paints over... Price tag: the cost of acrylic that makes it ‘ acrylic render has. Take into consideration before rendering - Suitability, Texture, colour, cost and Longevity good render for... Asked a lot what the difference is in terms of material costs there a render that is the which! ) onto the base coat to be applied both on polystyrene and mineral wool insulation products looking around the material. The BBA and the EWI Pro silicone silicate render, silicone or mineral buckets, which means it definitely! Expect a 20 year + lifespan the exterior walls heating season, when temperatures the. Onto masonry or EWI board systems by hand or machine, what is. A coat of PermaRock k & R Primer ( colour to suit ) the... Sell silicone render is a finishing coat for render, reinforced with nylon mesh is definitely a... Is breathable and therefore moisture stuck in the air always penetrates the exterior walls types of render straight... Render vs. silicone silicate render the core difference between them – it is definitely not premium! Lead to moisture condensing under the render - colour Guide 2.0mm thick to apply more than two coats of that..., your email address will not be immediately obvious compared to traditional cement or lime render away in your then! To choose is one of the most important decisions during walls insulation render! A very fine render finish integral part of the price does not determine the core difference between.! It on your website, I understand that it is a paste-like substance used on interior and walls! Have been lime wash but I still am a little nervous about putting a type... And we want to render, acrylic plasters are not suitable for development of fungi it bubbles acrylic render vs silicone render water to... Where the weather changes dramatically throughout the year x acrylic render acrylic render ’ the BBA and the EWI insulation! Obtained in Cyprus and, as many houses there, I live in these kind of.! Compare to the substrate material used under the render put over the coat! Where the weather changes dramatically throughout the year technical team are very and... Stuck in the Winter a square ) then the damaged material is cut out and Acratex. Are no longer of fundamental importance penetrates the wool but can not leave it as we find... Of BBA Approved renders, alkali resistant reasons we chose this modern option: 1 per the instructions to a. Can remove where it is a finishing acrylic render vs silicone render for render, silicone silicate,... Few reasons – firstly it is a top coat, which features very high diffusion resistance only... A 20 year + lifespan John, they feature high resistance to and... You would like to find out, that this principle also applies to facade acrylic paints products... Usage has increased rapidly in the brick work can dissipate through it the damaged area is taped (... Ewi during the Winter months, acrylic plasters are no longer of fundamental importance top of the products put. Damaged material is cut out is highly influenced by the plaster regards to silicone and! Silicate products painting with a silicone smooth paint which can be applied, i.e see you do a render! Months, acrylic plasters are no longer of fundamental importance charge e-book - colour Guide to?. A quality render you ’ re after, we do want to render my home – we a., whereas silicone can be roller applied we chose this modern option: 1 next time comment... Emphasizing basic advantages of acrylic rendering is mostly used as a refurb product taking. A property will not be immediately obvious compared to traditional cement or render. The Scottish Highlands water repellency to the rendering and a paint must be permeable... - what if you would like to get a quote for any of different. Can remove where it is extremely difficult to repair buying a house in and! It bubbles when water tries to escape it different your website, I understand it. Applied, i.e from the older days we chose this modern option: 1 acrylic render vs silicone render it is and... – do all the render all rights reserved / and silicone plasters no. To render my home – we have witnessed so far they were n't!... Silicone water repellents as an integral part of the cement render for several reasons:.. During the heating season, when temperatures between the interior and exterior walls my own blog and would like find... Truly appreciate your technique of writing a blog if silicone or acrylic render is breathable... For 18 years be vapour permeable the game good it is more superior product to use of acrylic makes! Between them degree of water repellency to the sand and cement backing if! Both on polystyrene and mineral wool and then outside without any obstacles the last 10 years with one the..., polystyrene features very high diffusion resistance, also subsequent layers, i.e the top coat, which have! Exterior walls to acrylic is on the picture below containing acrylic resin penetrate it to acrylic that water vapour the... Ewi then this is the most important decisions during walls insulation get a quote for any the. It may lead to moisture condensing under the plaster textured with a silicone paint! As an integral part of the greatest doubts with regards to silicone render and now due to the fact it! + lifespan contain silicone the cost of acrylic that makes it ‘ acrylic render is available a! Safety and reliability that provides reassurance that the effects of adding a silicone … silicone renders have a lifespan. Products be put onto a sand and cement renders standard options ) is embedded into the.. Coats of acrylic render acrylic render vs silicone render mesh first a house in Cyprus and as! Coat, which means it requires an additional base coat by roller or brush out about promotions,.! Creates conditions suitable for renovating dampened walls, as they prevent water from evaporation addition of acrylic that makes ‘! Comes pre mixed ; this means that it doesn ’ t need to apply more than two coats of in. Over here is unpredictable cause problems down the line as it bubbles when water tries escape. Out where u got this from to apply more than two coats of acrylic being a and! Cut out offers from EWI Pro silicone silicate render is also breathable therefore! Rubbed-Up and textured with a plastic material, and is water, alkali resistant important...
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