Application of two-component microcement of cementitious base DÉCOR 2K

What do we need?

Integrated microcement systems are the innovative solutions proposed by THRAKON. With THRAKON’s microcement coating systems, you can decorate distinctly masonry surfaces or floors, achieving an excellent result.
With DECOR, DECOR FINE PLUS or DECOR SUPERIOR you can create colored decorative surfaces with the traditional Greek Cycladic style by giving artistic effects. It is applied on horizontal or vertical surfaces
of concrete, plaster, plasterboard, cement and other substrates once the substrate has been made prepared accordingly. It is the ideal solution for special structures such as benches, sinks, showers, swimming pools, flower pots, ladders and for surfaces with strong contractions – expansions (eg. Floor heating).
The advantage of THRAKON’s system is the easy tinting flexibility, by giving the opportunity to the applicator to purchase the colorant from our business partner that has a Thrakon tinting station immediately, diminishing thus the lead time for the colorant.

Products used

GLX 292 or GLX 190 primers
DÉCOR ART
DÉCOR PRIM
DÉCOR PROTECT
DÉCOR PU VARNISH
CLIMAPLUS Fiberglass
WRM 525
WRM 550
DSF 353 SUPER ELASTIC
FMF 150

Step by step 

Step 1: Surface cleaning
Before starting application we need to protect the surrounding areas from getting dirty from application. This can be done by covering neighbouring areas with a plastic sheet, while protecting  the edges of application with paper tape.

    
ATTENTION: Substrate must be clean, solid and as level as possible. Crumbled plasters (masonry) must be repaired by using the fast setting repairing plaster of THRAKON, WRM 550*. Repairs should also be made at the floors, by repairing cracks or gaps on concrete with one of THRAKON’s repairing products
(WRM 525*).
Step 2: Waterproofing surface
There are cases where measures against moisture should be taken, in order to protect microcement from potential problems in the future:
DSF 353 SUPER ELASTIC*:
Brushable, 2 component waterproofing mortar, high elasticity, bridging small cracks (consumption: 1,5kg/m² per 1mm layer thickness).  Two-component waterproofing products are highly flexible, resistant to expansions and contractions, and offer the ability of crack bridging. Addition of water during preparation of mixture is not required.  The application of brushable waterproofing slurries should be from two to four hands, crosswise, in order to achieve optimum results.

    
Applications ought to be waterproofed them from moisture problems are:
• Terraces and generally horizontal surfaces with possibility of standing water
• Swimming Pools and Water Tanks
• Bathrooms and other wet areas
• Areas with hydrostatic pressures
Step 3: Surface priming

  
Select the appropriate primer for the proper preparation of application area, depending on the surface.
The above shades are indicative. THRAKON offers a choice of more shades by choosing the tone you want from CLIMAPLUS fan deck.
Absorbent surfaces
For absorbent surfaces you must use GLX 292, a deep penetration acrylic primer:
• GLX 292 FLEX PRIM: Ready to use (consumption: 50-70 gr / m²)
Non-absorbent surfaces
For non-absorbent surfaces (mosaic, marble, tiles and concrete) you must use the quartz sand primer:
• GLX 190: Ready to use (consumption: 400 gr / m²)


After applying the primer accordingly to the above instructions, the next day, you can move to the next stage which is the application of microcement.
Step 4: DECOR ART Shade selection
THRAKON offers a choice of more shades by choosing the tone you want from CLIMAPLUS fan deck.
Step 5:THRAKON DECOR Mixture preparation

 
The first step is to mix component B of DECOR (5kg liquid resin) with DECOR ART pigment. Then add a small amount of water in DECOR ART and stir the pigment. The next step is to pour the content of DECOR ART in the bucket containing the emulsion. Make sure to empty the entire content of DECOR ART. Stir the liquid mixture by using a low speed mixer (300 rpm/min), until we get a homogenious mixture and then add the bag with 25kg mortar, while stirring. During this
process add the necessary quantity of water. Alternatively to DECOR (2-component microcement system), you can select 3- component epoxy microcement system DECOR SUPERIOR (see. Technical Data Sheet). The amount of water to be added depends on the application (wall or floor). Typically, the application on a wall requires less water (tight mixture). The water to be added varies depending on the desired workability from 1,5 kg to 2,0 kg, in order to create a uniform creamy slurry without lumps. Leave mixture still for 3 minutes, until it matures. Then stir again and start application.
Step 6:First layer application

    
The first layer of DECOR microcement should be reinforced by using CLIMAPLUS fibreglass mesh (160gr/m²). This fibreglass mesh should be placed on the first layer in order to enhance and improve the surface when:
• Application is made of a surface with joints (eg tiles) or other irregularities
• On substrates subject to receive large loads
• The application is made in areas with permanent humidity (“wet areas”)
• The product will be subject to hydrostatic pressure
• The application thickness will exceed 3mm
Spread the product on the properly prepared substrate (Steps 1-3) with a toothed stainless steel trowel (teeth 6 – 10 mm). The application is easier when made at 1 m layers of applied product.
Step 7: Fiberglass Mesh application

    
The next step is to insert CLIMAPLUS fibreglass mesh in the microcement by pressing it with the smooth side of the trowel. This will eliminate the possibility of entrapping air (bubbles) on substrate. The density of the fibreglass mesh is very high (160 gr/m²) in order to achieve increased strength and create an anti-crack
system. CLIMAPLUS fibreglass mesh should overlap each other by 10cm (black lines). When application is made on floors, mixture is walkable after 6-10
hours, depending on weather conditions and application thickness.
Step 8: Second layer application

    
Once the product gets dried on the surface, you apply the second layer of DECOR in order to cover the grid of the fibreglass mesh. The application is made “wet on wet” with a smooth stainless steel trowel. It is highly recommended to complete application for any surface (wall or floor) on the same day, to avoid compounds
shown (stripes). Alternatively, the second layer can be applied after the first one has completely dried. Usually this is between 6-10 hours after applying the first layer (depending on atmospheric conditions: humidity and temperature). Once the material hardens, it can be smoothed if necessary, with a sandpaper, to remove trowel lines and give a smoother finish. If application between layers exceeds 20 hours, it is recommended to apply one coat of deep penetration primer GLX 292 FLEX PRIM. We should be particularly careful when applying the primer, especially during the winter period, to make sure that the material has dried completely. When the application is on floor, we suggest the application team using insulation boards for stepping on them during application. This will help protecting the substrate from
damages.
Step 9:Application of more layers
If required, you can apply more than two layers, until you achieve the desired thickness. Application is made with a smooth stainless steel spatula.
Step 10: Application of top layer of microcement
The last layer is the one that will highlight our decorative style. The finishing layer could be the second layer or some of the following if we apply more than two layers. Exceptions are smooth and even substrates on which DECOR can be applied directly with a single layer, on which you will create the decorative style (e.g. renovation
of painted wall, etc.). The application of DECOR is made either with a smooth stainless steel spatula or with a stainless steel with teeth for application and
then levelled with the smooth side. The choice of the trowel and the dimensions of the teeth of the toothed spatula depends on the thickness of the layer applied by
the applicator to provide the desired style. Usually for the last layer, if selected notched trowel, choose trowel with small teeth size (e.g. 4-6 mm).
Tips: We need to avoid application in periods of high temperatures or strong wind, as it may create cracks on the surface due to sudden evaporation of liquid mixture (sudden shrinkage). If this is not possible, we should protect the application area from sudden curing by using appropriate means (such as air conditioners). Ideal
conditions are 5°C to 35°C and moisture content under 70%.
Step 11:Priming of microcement
After at least 48 hours from the application of DECOR, you can proceed with the preparation of microcement for the protective varnish. You should be very careful, especially during winter months, to make sure that the material has dried thoroughly and all moisture completely removed from the mass. The general rule applied is waiting one day/mm layer thickness.  In this step, you apply microcement primer DECOR PRIM, for stabilizing the microcement and preventing shade differences
Step 12: Final surface protection
The last stage of the application of the microcement system includes the selection of protective varnish. The choice depends on the requirements and exposure conditions of microcement:
• DECOR PROTECT: Water based varnish for indoor and outdoor use, for walls and floors, where we do not have standing water. Apply 2 hands.
• DECOR PU VARNISH: Two components polyurethane varnish, for floors and the most demanding applications. Provides high resistance to abrasion (floors), protects from UV rays and is suitable for permanent immersion in water (pools, showers, terraces, balconies etc.). Apply 2 hands

* Humidity of substrate must be <4% and ambient humidity <65%. Also, the temperature during the application and curing of the varnish must be from 8°C to 35°C. If lower temperatures applied or rainfall over the next 48 hours is expected, the application should be postponed.

Product Categories : Microcement

Products used: