Primer Gross facade (universal)
Primer GROSS facade is a mixture of polymeric binder, fillers and special additives.
It is specially designed for priming chalky, loose, highly-absorbing surfaces of concrete, wood, cement and cement-shaving slabs, gas concrete, gypsum blocks and plasterboards, plaster, stucco and putty prior to application of overcoats.
Primer GROSS facade could be used before coating with ASTRATEK (universal), ASTRATEK facade and/or paints GROSS.
It is made for exterior and interior application. It is a deep penetrating, surface conditioning, adhesive primer that binds chalk on previously painted surfaces and seals stucco surfaces. When dried primer GROSS facade film becomes transparent and vapor-permeable.
It makes the overcoating with paints and other materials much easier and reduces their consumption.
Technical Data
| № | Characteristics | Value | Test Method |
|---|---|---|---|
| 1 | Appearance | Forms a smooth homogeneous surface after drying | p. 5.5 TU 2316-003-62584336-2009 |
| 2 | Color | Colorless | GOST 29319 |
| 3 | Drying time to degree 3 (t = (20±2)°С, ambient humidity 65%), hour, not more | 1 | GOST 19007 |
| 4 | Viscosity (VZ-246 viscosimeter with nozzle size of 4 mm), sec, not less | 14 | GOST 8420 |
| 5 | Volume solids content, %, not less | 28 | GOST 17537, p. 5.6 TU 2316-003-62584336-2009 |
| 6 | Hydrogen ion exponent, рН, not less | 7 | GOST 28655, p. 5.9 TU 2316-003-62584336-2009 |
| 7 | Adhesion, B, within | 1-2 | GOST 15140 |
| 8 | Dry film flexibility while bending, mm, not more | 3 | GOST 6806 |
| 9 | Coating resistance to water (t = (20±2)°С), hour, not less | 12 | GOST 9.403, method A |
Package: Plastic pails of 5; and 10 liters.
Application
Surface should be dry, clean, free of oil, wax, dirt, rust, grease, or other foreign matter such as scales, paint chips, etc. Ambient temperature and substrate temperature should be higher than +5°С.
The coverage of the primer is 100-150 g/sq m (depends on a substrate type).
Primer is applied by brush, roller or sprayer. Prior to application the primer should be thoroughly mixed. It could be diluted with water if necessary.
Use an airless sprayer for areas of more than 100 sq m.
For less than 100 sq m use an air gun with 4-5 bar pressure.
Brushing is recommended for curved and formed substrates especially in tight areas.
Additional ventilation is not necessary. When applied by sprayer, proper respirators and goggles are recommended for your protection.
Storage and transportation
Product should be kept in a tightly closed pail in a storage area from +5°С to + 35°С, out of direct sunlight.
The product marked as anti-freeze can be transported at a temperature to -40°С during a month. 5 (five) freezing cycles are allowed.
The shelf life of the product is one year from manufacture date in proper storage and transportation conditions
The primer can be transported by all kinds of transport, in closed roofed vehicles, in accordance with the transportation regulations.
