Browse Forums Building A New House Re: Cement render with membrane paint vs acrylic render 4Sep 08, 2019 10:21 pm The high-build render is used to level the walls out. They are cement and sand mixtures with an acrylic component (like 1-2%) and normally a polystyrene ball in them which creates the “high-build”. These coatings do not stretch like a rubber band or bridge cracking. The Dulux Acrylic Texture (mainly Coventry Course) is applied 1-2mm thick, its a finishing coat which puts the desired color on the house and provides a very neat and tidy finish. Most companies like Dulux, Rockcote, United etc will still specify a membrane/paint on top of this to get full warranty and true colour. For instance, if a few rust spots appeared on your wall which was not painted then manufacturer would not cover. The only way to prevent cracking is to install expanded metal sheeting or embed a fibreglass mesh into the render at time of rendering. It is not possible for the Texture Coat to be easier to maintain than the membrane/paint. It’s a slightly porous system, it will stain, take in moisture, get dirty etc Re: Cement render with membrane paint vs acrylic render 5Sep 08, 2019 11:03 pm Mirrmu83 The high-build render is used to level the walls out. They are cement and sand mixtures with an acrylic component (like 1-2%) and normally a polystyrene ball in them which creates the “high-build”. These coatings do not stretch like a rubber band or bridge cracking. The Dulux Acrylic Texture (mainly Coventry Course) is applied 1-2mm thick, its a finishing coat which puts the desired color on the house and provides a very neat and tidy finish. Most companies like Dulux, Rockcote, United etc will still specify a membrane/paint on top of this to get full warranty and true colour. For instance, if a few rust spots appeared on your wall which was not painted then manufacturer would not cover. The only way to prevent cracking is to install expanded metal sheeting or embed a fibreglass mesh into the render at time of rendering. It is not possible for the Texture Coat to be easier to maintain than the membrane/paint. It’s a slightly porous system, it will stain, take in moisture, get dirty etc Cement render sounds the right option for me then. Thank you so much. Glad I don't have to go for the significantly more expensive option. Re: Cement render with membrane paint vs acrylic render 6Sep 09, 2019 1:18 pm Acrylic texture coat is superior to standard painted cement render. It is far more resilient regards cracking and movement. Basically both systems use floated sand and cement at roughly 10mm over the brick work. For painted render that is then sponged to get a smooth uniform finish for painting. If it's going to have acrylic texture applied the float is just screeded flat. It's allowed to dry then an acrylic primer is painted on then acrylic texture is trowelled on at around 1-2mm. It has far more ability to expand and contract compared to standard paint. It also has more depth (texture) to the finish due to the nature of the coating. You do need to be careful with acrylic texture because it is very hard to patch. You often need to retexture the entire wall to get a seemless finish. It costs more because it is far more labour intensive but if you look at houses around 10 years of age a house with texture coat will still look good whereas a painted render house will be looking pretty ordinary and will be needing another coat of paint. There is a reason all high end homes utilise acrylic texture rather than painted render. Accessible Carpentry & Cabinets accessiblecarpentry@gmail.com accessiblecarpentry.com.au https://www.facebook.com/pages/Accessible-Carpentry-Cabinets/583314911709039 Re: Cement render with membrane paint vs acrylic render 7Sep 09, 2019 10:51 pm chippy Acrylic texture coat is superior to standard painted cement render. It is far more resilient regards cracking and movement. Basically both systems use floated sand and cement at roughly 10mm over the brick work. For painted render that is then sponged to get a smooth uniform finish for painting. If it's going to have acrylic texture applied the float is just screeded flat. It's allowed to dry then an acrylic primer is painted on then acrylic texture is trowelled on at around 1-2mm. It has far more ability to expand and contract compared to standard paint. It also has more depth (texture) to the finish due to the nature of the coating. You do need to be careful with acrylic texture because it is very hard to patch. You often need to retexture the entire wall to get a seemless finish. It costs more because it is far more labour intensive but if you look at houses around 10 years of age a house with texture coat will still look good whereas a painted render house will be looking pretty ordinary and will be needing another coat of paint. There is a reason all high end homes utilise acrylic texture rather than painted render. Thanks Chippy. Good to know more about what Acrylic render has to offer. Will help me see the pros and cons of both options before I make my decision. Re: Cement render with membrane paint vs acrylic render 9Sep 12, 2019 9:33 am Most “texture” manufacturers will require you to paint the texture to achieve their full system performance and product warranty. Texture is applied to budget houses to expensive houses,, very few are painted and will have no warranty for rust spots, staining, true color etc If you choose a Dulux colour it cannot be replicated by Rockcote, Unitex or Macrender Texture. The differences can be quite significant. Maintenance is quite simply cleaning the wall with warm soapy water, broom surface and hose off. Avoid high pressure. Some staining you will not get out as its a porous surface to begin with. To fully update your wall surface you would simply paint it, you would not reapply “Texture”. Products like Weathershield, Solarguard, Acrashield are very good products. Hi Alex, Thanks for the reply again. I had a chat with the builder, he said he will use primer, then hydrotec which comes with colour and sealer as well. A Renderer I… 12 14386 Suggestions please for acrylic rendering Color to match austral brick urban one pepper. Pic for reference. Thanks 0 3792 It's a classic case of aesthetics subjugating function where style takes precedence over practicality. 3 2922 |