What is the Difference between Sand and Cement Render and Silicone Render?

Hi luke sand and cement is very dense and heavy and is applied 10mm to 15mm in thickness depending on your background.I always use EML mesh before rendering as it gives a good key and eliminates unwanted cracking.Although having the mesh mechanically fixed does push up the price considerably. With krend it is applied 2 coats to a thickness of 5mm-7mm but the mesh is bedded into the first coat then 2nd coated applied making it faster and easier to use aslong as your surface is reasonably flat then I would always recommend krend.It is also silicone based so it is already waterproof and you can have the option of having a coloured top coat applied that doesnt need painting and has a 25year life.Or you can keep it unpainted.The cost of s&c can sometimes cost more because of the extra time it takes.ie.Just one large wall with door and window needs corner beads drip beads eml mesh all these could take upto a day just to prep.krend all this and rendered can be acheived the same day and the cost wouldnt be so different. Hope this helps Regards Simon