Browse Forums Building A New House Re: How long should Render last before cracks (not settlemen 9Aug 25, 2020 8:29 pm Mirrmu83 Silicate is European for sand More like quartz. I am talking about something similar to this: https://rsistore.co.uk/product/ewi-040-silicone-silicate-render-25kg/ Re: How long should Render last before cracks (not settlemen 11Aug 25, 2020 8:49 pm There are different types of sand (e.g. calcium carbonate, aragonite/coral, etc.). But yes, silicon-silicate renders are finishing (or decorative) renders. The base render can be standard sand cement render. Re: How long should Render last before cracks (not settlemen 12Oct 01, 2020 7:17 am I am lead to believe thqat the cheapest option for the original renderer is to apply a primer and then Rockcote over the top. Apparently that will be less than stripping existing concrete render, and reapplying and painting again. That may also mean that the render may avoid the cost of a weeks hire of scaffold too. Does that all sound likely? Re: How long should Render last before cracks (not settlemen 13Oct 01, 2020 10:16 am Where is the cracking, is it everywhere (crazy cracking)? near windows/sills? at damp proof course? middle of a wall? I assume when you mention Rockcote it is a tinted trowel-on texture coat. This type of product is not a flexible coating. They comprise around 70% solids and are acrylic based. Crack bridging ability is low. They require painting over to have a warranty. A membrane provides more crack bridging, Rockcote would have a product line or there is Dulux Acrashield. Very heavy paint. If your walls are already painted you shouldn't need a primer, just a clean with hose and mild soapy water. Do you have a scope of works? If have texture on wall now, the patch will show through The standard for repair of texture is to patch, re-texture corner to corner,… 5 6904 The mesh is often stuck on wall first then rendered over, which means it does nothing Not to specifications Get a scope of works in writing before start, needs to be… 10 8976 I am in the same situation, would you be able to give some insights in to this? I am in SA 8 17013 |