Characteristics and application areas :
Sarina Siva is a hand applied gypsum plaster which is used for first layer of plastering for various kinds of construction materials such as bricks, cement blocks, and concrete covered surfaces.
By using perlite and polymer based compounds in this product , it has advantages of long setting time, lightweight, and more sound and heat proof resistance in comparison to ordinary gypsums.(for obtaining a smooth finish, saten gypsum should be used as the finishing layer).
Preparation of Mortar :
Fill a clean container with 18-20 liter water for each 30 kg bag of the product . then pure the gypsum in the water slowly until covering the surface of the water . wait for 2-3 minutes for floating gypsum to sink by soaking .Mix water and gypsum at a low speed by a mechanical mixer until a proper mixture is obtained.
§ Surface of the gypsum application area and also tools surface must be clean ( dust, oil and small particles should be removed from surface of the work ).
§ It is better to have a good balance of work and holes and bumps made possible by the work surface.
§ It’s better that surface of the work is moisture with water before application.
Usage amount per each 1 cm thickness : 8 – 9 kg/m2 ( thickness of the plastering must be at least 1 Cm , if necessary to work more than 1 cm thickness , it’s better to work the 2nd layer in the day after ).
Proper temperature during application : between 5 to 35 C.
Proper humidity during the application : 50% – 60%.
Initial setting time : 40 – 50 minutes.
Secondary setting time : 120-150 Minutes (so the user has enough time to process finishing).
Normal thickness of applying is : between 1 to 2.5 cm.
Storage conditions : the bags should be stored in a dry place on pallets away from water and humidity.
Shelf life: 6 months from the date of production . It is recommended to use within one week after opening the bag .