Carotex Natural Clay Mortar Additive is a high quality air floated sedimentary hard kaolin clay. Carotex Natural Clay is added to mortar and Portland to make the material easier to work with (“creamier” without adding water) as well as making it “stickier” for a better suction bond.
Carotex is Perfect for adding to Gray Portland and Diamond Sand to lay concrete/clay roof tile. It is very similar to using Mason’s Lime, although it has a buff (light brown) color to it. Keep that in mind if you are planning to use White Portland. Typically, you mix one bag of Portland to one bag of Carotex.
Carotex Natural Clay Mortar AdditiveRemember: you are mixing a 94lb of Portland and 50lb of Carotex so watch your ratios. You MUST use Diamond Sand when laying roof tiles. It is also a great admix when laying stone on a vertical application, because you need the added suction bond until the cement starts to hydrate and forms a mechanical bond. If using Premixed Mortar (ie: 80lb bag of Ready Type M), you only want to use about 8oz (about a coffee cup full) and no more than 16oz of Carotex per bag of Premixed Ready Mortar Type M.