|SAND CEMENT PLASTER||GYPSUM PLASTER|
|The Mixure of the sand and cement has to be made at the site in different ratios a difficult process that requires contstant monitoring.||Contact monitoring not required. The plaster is ready mix of gypsum, Perlite, Vermiculite and additives Effort & Time saved.|
|It is not ready mix plaster and hence variation in mixing can occure. Backgrounds.||Specially formulated ready mix plaster for most type of solid. No variation.|
|Sand is used an aggregate.||Exofoliated vermaculite acts as aggregate that helps in attaining better coverage and good thermal insulation.|
|After sand cement plaster, POP punning is required for better surface finish.||Substitute Two-application cement plaster & POP punning. Provides smooth surface finish in one application better then POP.|
|Pre-curing and post-curing is necessary.||No pre- curing & post-curing is required. Thus saves time and wastage of water.|
|Setting time varies from 60-120 minutes.||Graduated setting time (30-50 min.) to enhance easy workability.|
|Development of water cracks is quite frequent.||No shrinkage cracks once set & provides crack free smooth surface.|
|High percentage of wastage during application.||Nominal wastage during application.|
|Rough finish is obtained.||Very smooth fine finish surface is obtained.|
|It leaves water patch marks behind.||No patch marks can be observed once it is set & dry.|
|Very messy.||Not at all messy.|
|Used for bricks, blocks, concrete walls & and rigid background directly.||Used for bricks, blocks, concrete walls & any rigid background directly.|
|Time consuming process hence more labour cost involved.||Time saving process, thus less labour cost.|
|Multiple brands are available in the market hance quality varies.||One branded product hance one is always assured quality.|
Gypsum plaster contains no dangerous chlorides. It retains its composition for thousands of years as testified by the construction of the Cheops Pyramids
Gypsum plasters have low conductivity and good thermal properties, ensuring energy and power saving. Tested in accordance to BS 874:1973. Appendix - C, Class "A" in accordance to DIN 4102. The thermal conductivity is 0.32 W/mK.
Gypsum plasters exhibit high tensile and flexural strength. They are less prone to cracking or debonding due to thermal, tensil and shearing movement of the background.
Gypsum plasters will not harbour insects or nourish mould growth or fungi. They pose no health hazards and are therefore frequently specified in hospitals and clinics. They are gentle on the skin and offer a clean, healthy environment.
Gypsum plasters require no water curing and should be permitted to dry out as quickly as possible. A definite advantage considering the weather conditions in the Tropical Country like India
Gypsum is non-combustible (inert), designated class ‘O’ in a accordance to BS 476:4:1970, and contains a high content of crystal water. In the event of fire, will act as a barrier and will protect the blockwork, concrete and steel.
Gypsum (calcium sulphate) as a binder is used in the manufacture of acoustic tiles and plasters, a contributory factor to the absorption of air-borne sounds.
Due to the nature and structure of gypsum, it exhibits excellent bonding properties: hence is applied in a single coat on R.C.C. ceilings, Internal Bare-Brick walls, Hallow Concrete Blocks and Concrete Columns.
The Gypsum blended the gypsum plaster is the perfect rust preventive agent and inhibits corrosion of electric metal fittings, pips, etc. Metal lathings embedded in gypsum plaster will not corrode or rust. Serves durable life-long.
International gypsum plasters are pre-mixed and available in easy to handle bags. Only the addition of water is required. A single coat application suffices in most situations resulting in less wastage of time, labour and material. Semi-skilled masons can be taught how to apply and achieve excellent finishes within a few hours on site.
Gypsum plasters provide a smooth interior finish for ceilings and walls, and is ideal background for good quality paints and wall paper finishes.
Gypsum plasters do not shrink (unlike cement) during the drying out and hardening process.