CEMENTITIOUS SKIM COAT

Preparation
It is essential that adequate preparation is carried out prior to the application of SpECbuild SC. Grit blasting is recommended to ensure the removal of all laitance, grease and oil. The resulting surface should be dust free.

Prior to the application of the product the prepared substrate should be thoroughly soaked with clean water. When application commences the substrate should be saturated without standing water on the surface.

Mixing
SpECbuild SC is a one-part cementitious mortar. 6.5 to 7.0 litres of water is required for each 25kg bag of SpECbuild SC.

The product should be mixed in a forced action mixer or in an appropriate sized metal or plastic drum using a slow speed drill and a spiral paddle. The water should always be placed into the mixing vessel before the addition of the SpECbuild SC.

The entire contents of the bag of SpECbuild SC should be emptied into the vessel whilst mixing is in progress. Mixing should continue for 3 to 5 minutes until a uniform, lump free consistency is produced.

Application
SpECbuild SC may be applied in one layer as a thin section render up to 3mm thick. The product may also be used for filling blow holes up to 10mm deep.

The material must not be over worked and should be left to partially set before final finishing. This finishing may be improved by flicking on a very small amount of water prior to troweling.

Curing
SpECbuild SC is resistant to shrinkage cracking however the material should be protected from extreme conditions such as hot winds or freezing conditions. SpECcure AC or SpECcure WE may be sprayed on to reduce the rapid drying out of the surface. In cold conditions the material should be protected from freezing.