Painting of walls with high durability epoxy coating
EPOXYCOAT Two-component epoxy coating
DUROFLOOR-BI Two-component, colorless epoxy impregnation
EPOXYCOAT-AC Two-component anti-corrosive epoxy coating
SM-14 Special solvent for epoxy coatings
I. NATURE OF THE PROBLEM – REQUIREMENTS
Walls in places such as factories, laboratories, hospitals, abattoirs, canneries, wineries, petrol stations, service stations, etc are exposed to chemical damage by the activities carried out in them.
Consequently, the finishing surfaces of such places need to be highly resistant to chemical loading and easy to clean.
The use of EPOXYCOAT epoxy coating, for walls whose surfaces must be highly resistant to chemical damage and easily washed, is the most appropriate solution.
The surface created by its application demonstrates particular resistance to diluted acids, alkalis, petroleum products, some solvents, water, sea water and weather effects.
EPOXYCOAT acts as a protective and decorative paint on cement-based substrates, such as concrete, plaster, cement-mortar, cement boards etc. and also on metal surfaces.
It is suitable for factories, laboratories, hospitals, abattoirs, canneries, wineries, petrol stations, service stations etc.
The surface to be treated must be dry (< 4% moisture) and stable, as well as being free from any materials that would hinder bonding, such as dust, loose particles, grease, etc. It must also be protected from attack by moisture from behind.
According to its nature, the substrate must be prepared by brushing, grinding, milling, sand blasting, water blasting etc.
Subsequently, the surface must be cleaned from dust using a high suction vacuum cleaner.
The surface should be primed as follows:
Cement-based substrates should be primed with a single coat of DUROFLOOR-BI or with EPOXYCOAT, diluted 10% to 15% with the special solvent SM-14.
DUROFLOOR-BI consumption: approx. 150 g/m2, depending on the absorptivity of the substrate.
Metal or steel surfaces should be primed with two coats of EPOXYCOAT-AC anticorossive epoxy coating. Second coat follows after the first one is completely dry, but within 24 hours.
EPOXYCOAT-AC consumption: 150-200 g/m2 per coat.
After drying of mthe primer, but within 24 hours, application of EPOXYCOAT can take place.
Application of EPOXYCOAT
Components A (resin) and B (hardener) are packaged in containers in predetermined mixing proportions. The whole quantity of component B should be added to component A and the mixture must be stirred for about 5 minutes with a low-revolution (300rpm) mixer. It is important that the stirring reaches the wall and bottom of the container, in order to distribute the hardener evenly.
EPOXYCOAT should be applied as it is or diluted up to 5% with the special solvent SM-14. At least 2 coats should be applied by brush, roller or spray. The second coat is applied once the first one is dry, but within 24 hours of the first.
EPOXYCOAT consumption: 200-300 g/m2 per coat.
EPOXYCOAT contains solvents. In cases of application in closed rooms, measures should be taken for good ventilation.
The working time of epoxy products reduces as the ambient temperature rises.
Bonding between the successive layers may be severely affected by any moisture or dirt introduced between them.
The surfaces of the epoxy layers must be protected against moisture for 4-6 hours after their application. The effect of moisture may whiten surface and/or make it sticky. It may also disturb the hardening process. Discolored or sticky layers on parts of the surfaces must first be removed by grinding or milling and then subsequently recoated.
If more than the recommended time has been left between successive layers or when recoating already used surfaces after a long period, the old surface must be thoroughly grinded and cleaned before the new coat is applied.
Consult the instructions for safe use and precautions written on the packaging.