A basecoat plaster for application to concrete or Rhinoboard
Cretestone is a vermiculited, retarded hemihydrate Gypsum plaster and is suitable as a basecoat plaster and a finishing plaster for application to concrete soffits, concrete blocks and RHINOBOARD. For internal use only.

MIXING
Add 40 kg CRETESTONE slowly to 22 litres of clean water. Allow to soak for 5 minutes. Stir slowly to a creamy tex-ture. DO NOT add foreign matter to CRETESTONE. ALWAYS use clean utensils. Mix with clean water only and in a clean container. DO NOT overstir. DO NOT mix more CRETESTONE than can be used in 45 minutes (nor more than 2 bags per mixing container). DO NOT re-stir nor add more CRETESTONE or water to the mix after mix-ing is complete.
N.B Add water ratio. Water ratio is an approximate figure. Workability can be altered by adding or reduc-ing the volume of water.

APPLICATION
1. Cretestone to concrete surfaces:
On rough concrete surfaces no hacking or slushing is necessary. Where steel shuttering and/or grease has been used, or proprietary compounds have been mixed with the concrete, special care should be taken to clean the surface. Grease or oil of any description is always detrimental to the bond of any plastering material, and if not cleaned entirely from the surface, could result in bond failure between the CRETESTONE and the concrete. We recommend that the concrete surface is scrubbed with a cleansing agent to remove the grease or oil. All traces of the cleansing agent must be removed by rinsing with copious quantities of water. Brush off all loose particles of cement using a wire brush. Apply GRIPPON plaster bonding liquid using a brush or roller and whilst it is still wet and tacky apply the CRETESTONE neatly to a thickness of not less than 5 mm by using a steel trowel as follows: Apply one layer of CRETESTONE directly and evenly to the con-crete with a steel trowel, pressing the CRETESTONE well onto the concrete surface. The pressure is essen-tial, as without it, air may be trapped between the CRETESTONE and the concrete, destroying the bond. As soon as this layer has stiffened, but not set, apply another layer of approximately 4 mm thick, with a steel trowel. Use a feathered-edge straight edge to rule off and straighten the plaster. Where hollows show between the feathered-edge and plaster surface, addi-tional CRETESTONE must be applied and ruled off again. Apply a finishing layer of CRETESTONE. Allow to stand until the initial set takes place (25-35 minutes). 69 As this layer begins to stiffen, temper the surface with just sufficient water on a brush preceding the trowel, and trowel to a smooth finish free of blemishes.

2. Application to Rhinoboard
Apply CRETESTONE neatly to a thickness of not less than 5 mm as follows: Apply one layer of CRETESTONE directly and evenly with a steel trowel, pressing the CRETESTONE well onto the RHINOBOARD surface and well into the wire scrim or FIBATAPE at joints. The pres-sure is essential, as without it air may be trapped between the CRETESTONE and RHINOBOARD, thus destroying the bond. As soon as this layer has stiffened, but not set, apply another layer with a steel trowel of approximately 4 mm thick. Use a feather-edged straight edge to rule off and straighten the plaster. Where hol-lows show between the feather-edge and plaster sur-face, additional CRETESTONE must be applied and ruled off again. Allow to stand until the initial set takes place (25-35 minutes). Apply a finishing layer of CRETE-STONE. As this layer begins to stiffen, temper the sur-face with just sufficient water on a brush preceding the trowel, and trowel to a smooth finish free of blemishes.
3. Covering capacity
Applied 6 mm thick the coverage will be approximately 7m 2 /40 kg.
4. Decoration
Before decorating check the entire surface carefully to see that the plaster has set hard and is dry. Do not sandpaper CRETESTONE. It is recommended that all CRETESTONE surfaces be sealed with an oil or solvent based sealer such as Plascon Brick Dressing or Plascon Acrylic Glaze Coat. Allow to dry for 24 hours before applying two coats of paint as required.

NB: Epoxy paints not to be applied onto CRETESTONE.

Only availablein the Cape and Namibia.