Feb rendamix is a water resisting, retarding and plasticising admixture for use in sand, cement rendering mortars. The product also acts as an inhibitor for efforescence. Conforms to BS EN 934-3: 2009 for air entraining properties. Application The substrate to which the...Read More
Feb rendamix is a water resisting, retarding and plasticising admixture for use in sand, cement rendering mortars. The product also acts as an inhibitor for efforescence. Conforms to BS EN 934-3: 2009 for air entraining properties.
Application
The substrate to which the render is to be applied should be thoroughly sound and uncontaminated. Any existing coatings must be removed prior to the commencement rendering. When the substrate is found to be highly porous, long term bond and durability can be improved by the use of a bonding slurry consisting of cement and febond sbr mixed at 1 to 2 : 1. This should be applied to the prepared substrate immediately prior to application of the render, which should be applied 'wet on wet'.
Mixing: Selection of materials and correct mix designs relative to substrate and exposure levels are of paramount importance. Please see the data sheet for more information.
Addition: Rendamix is supplied ready to use and should be added to the mixing water at a rate of one part rendamix to 20/40 parts water. This corresponds to a dosage rate of 500ml to 1000ml per 50kg of cement. The plasticising action of rendamix should be used to full effect by reducing the water/cement ratio. A reduction in water content up to approximately 20% is achievable compared to an unplasticised mix. Care should be taken not to overmix.
Storage
Protect from frost. Stir before use.
Shelf life
2 years from date of manufacture.
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