and I want to mix some water for me pointing a leg roof varlet this mix is being made with three parts Sun and one part cement by volume as well as a handful of being forcing fiber and then all this is going to mix together using SPR instead of water that will make the mix waterproof and also up flexible I've already added three tins of sum to the mixing bucket and I am now adding the cement the firebird was quite difficult to find but I did manage to find someone eBay apparently there is enough fiber in that container to reinforce one cubic meter of concrete I am adding and unfold to the mix and I am assuming that it is well rock and pull now I am using a mix of puddle and the evolution mixer to mix the mix until it is mixed thoroughly obviously this is a lot easier if you have a cement mixer but for those without one the mixer puddle does work although it is I'd work I'm mixing nothing to dry materials to complete one roof Valley but the SBI will not be added to the full mix it's important to mix them water thoroughly and so this is going to take about 10 to 15 minutes to mix it up properly it's best to have to mixing buckets then you can tip wall and city order to ensure the contents I mixed too early I'm now adding one bucket into the urban bucket before mixing it again with the mixers will never mix more mortar than you can use in the sand there once you admit the sound of the cement if you leave it overnight it will become unusable due to the moisture content in the sand once the mortar is mixed properly io times firming and off mortar that I can use in about 20 to 25 minutes into a smaller bucket and the more to it soon sets once you mix it with the SPI and now slowly adding the SBI to the mix and then now mixing this using a gauging trowel always at the SBR in small amounts is you can always that more but you cannot take it out once you get to the correct consistency you have about 20 minutes to half an hour working time before it becomes difficult to work with it's best to clean all tools as soon as possible using clean water understated brush you can see that markup consistent mix in the book it is now I'm going to be used on the roof alley which will be covered in a later video a place of thanks for watching this video and if you have found it useful please subscribe if you haven't done already you