EL

Tel: (+30) 2610 647347

e-mail: machro@machro.gr

 

Questions and Answers



METALLIC SURFACES

 

1.1 THE PAINT TAKES TOO MUCH TIME TO DRY UP
CAUSE:
The coat of the paint was very thick.
The paint was applied at low temperatures and under increased humidity.
Thinning was performed using inappropriate paint thinner.
Bad quality paint was used.

SUGGESTED SOLUTION:

After the paint has dried up completely, apply one or two coats of SINLAC M-100 enamel following the instructions noted on the package.

 1.2   THERE ARE CREASES ON THE PAINTED SURFACE

CAUSE:

The paint was applied with increased thickness and/or the thinning of the paint was less than specified.
Repainting took place without allowing for the first coat to dry.
The paint was thinned using unsuitable paint thinner.
The ambient temperature was very high resulting to surface-only drying, while its interior was still liquid.


SUGGESTED SOLUTION:

Wipe the creased surface and wait until the paint has fully dried up.  Then, apply one or two coats of SINLAC M-100 enamel following the instructions noted on the package.

 1.3   SAGGING PAINT


CAUSE:

The paint was thinned using a large quantity of thinner.
A very thick coat of paint was applied.
The application was under very high temperature or the paint was already warm due to exposure to sun or a different source of heat.


SUGGESTED SOLUTION:

Wipe the sagging paint and wait until the paint has fully dried up.  Then, apply one or two thin coats of SINLAC M-100 enamel following the instructions noted on the package.


 1.4    RUST ON THE SURFACE WITHIN A SHORT PERIOD


CAUSE:

No anti-rust undercoat was applied.
The cleaning of the surface was not sufficient and dust residues had remained. Despite applying anti-rust primer and paint, the paint coats were very thin.
The paints applied were of bad quality.

SUGGESTED SOLUTION:

Wipe out the entire rust effectively from the surface and then apply one or two coats of SINLAC M-200 that is applied directly on rusted surfaces.

 1.5    THE PAINTED SURFACE IS BREAKING INTO FLAKES


CAUSE:

No suitable primer had been applied beforehand.
The surface had not been wiped clean from oils and other impurities.
The surface was glossy and was not treated with suitable sandpaper.
Inappropriate paint for this application.

SUGGESTED SOLUTION:

Remove all pieces that have not stuck properly and are dilapidated.  Rub using sandpaper and then paint with suitable undercoat.  Apply one or two coats of SINLAC M-100 enamel following the instructions noted on the package.

1.6   SURFACE WITH PAINT CHALKING


CAUSE:

The paint was exposed for an excessively large period to the sun.
The paint was unsuitable for exterior use.
The paint coat was very thin.

SUGGESTED SOLUTION:

Remove all dust from the surface caused by chalking, along with any other impurity.  It is suggested to use a wet cloth for this purpose.  Do not use a paint thinner.  Use sandpaper if the paint is very hard.  Repaint with one or two coats of SINLAC M-100 enamel following the instructions noted on the package.

 1.7   BUBBLES APPEAR DURING APPLICATION


CAUSE:

Prior to application, the paint was strongly stirred, usually using strong mechanical means and/or the paint thinning was less than required.
Inappropriate application tools were used.
Paint was applied under high temperatures.
The paint is of poor quality.
Thinning was performed using inappropriate paint thinner.


SUGGESTED SOLUTION:

Rub and grind the surface using a suitable piece of sandpaper and apply one or two coats of SINLAC M-100 series enamel paint, following the instructions on the package.


 1.8   THE PAINT IS NOT HARD ENOUGH


CAUSE:

The paint was applied with increased thickness, possibly due to insufficient thinning.
The final paint was applied too quickly, without allowing enough time for the undercoat to become sufficiently hard.
The quality of the paint was unsuitable.


SUGGESTED SOLUTION:

If the hardness of the paint is not sufficiently increased shortly, apply one or two coats of SINLAC M-100 series enamel, following the instructions on the package.

 

WOODEN SURFACES

 

2.1  PEELED OFF ENAMEL PAINT OR VARNISH

CAUSE:

    The surface was not properly prepared.
    Unsuitable paint.
    Increased humidity on the wood surface due to wood or ambient humidity.


SUGGESTED SOLUTION:

    Remove using mechanical means the paint that has been peeled off. Apply one or two coats of water undercoat or solvent by MACHRO and paint with the desired water or solvent paint by MACHRO. If the varnish has been peeled off, repeat the same procedure and apply one or two water or solvent undercoats and one or two finishes with water or solvent varnish by MACHRO.

 2.2   CREASES IN THE ENAMEL PAINT OR VARNISH


CAUSE:

    The paint was applied with an increased thickness and possibly with not enough thinning.
The second coat was applied without allowing for the first coat to dry up.
The paint was thinned without using an appropriate thinner.     
The ambient temperature was very high; as a result, only the surface of the paint dried up, while its interior was still liquid.


SUGGESTED SOLUTION:

    Wipe out carefully the creased surface by grinding it with the proper sandpaper and wait until the paint has completely dried. Then, apply one or two coats of AQUALAC M-800 water enamel paint or, if varnish has been applied, apply one or two coats of thinner varnish MARINLACΚ Μ-14.

 2.3  ORANGE PEEL LOOK ON THE ENAMEL PAINT OR VARNISH


CAUSE:

Unsuitable paint thinner was used.
The application of the paint, if a pistol was used, was made from a very close distance and/or with increased pressure.
Unsuitable painting tools were used (roller or pistol).
The thinning of the paint was not appropriate (usually less than specified in instructions).


SUGGESTED SOLUTION:

    Wipe out carefully the creased surface by grinding it with the proper sandpaper and wait until the paint has completely dried. Then, apply one or two coats of AQUALAC M-800 water enamel paint or, if varnish has been applied, apply one or two coats of thinner varnish MARINLACΚ Μ-14.

 2.4  THE SHADE OF THE VARNISH OR WOOD PRESERVATIVE IS DIFFERENT THAN THE ONE SHOWN ON THE PALETTE


CAUSE:

    The different shade of the wood
    The absorbing capacity of the wood
    The different application method. In other words, if more or less coats have been applied.
    The varnish has been excessively thinned; this results to a smaller thickness of paint. WARNING: the preservative should not be thinned.

SUGGESTED SOLUTION:

Grind the painted surface and apply one coat of FARMAXYL M-99, and then apply one or two coats of water varnish MARINLACK M-15 by MACHRO.
    If you are using solvent products, grind with the same way and then apply first one coat of FARMAXYL  M-16, followed by one or two coats of MARINLACK M-14, following instructions.


 2.5  BUBBLES APPEAR DURING THE APPLICATION OF ENAMEL PAINT OR VARNISH


CAUSE:

Prior application, the paint or the varnish had been strongly stirred, usually with strong mechanical means and/or the thinning of the paint was less than required.
Inappropriate application tools were used.
The application of the paint or varnish was performed under high temperature.
The paint or the varnish are of poor quality.
The thinning was performed using an unsuitable paint thinner.


SUGGESTED SOLUTION:

Grind and polish the surface using a suitable piece of sandpaper and apply one coat of solvent enamel paint VICTORIA M-23 and one or two coats of enamel paint of SINLAC M-100 series following the instructions on the can.
Otherwise, after grinding you may apply one coat of water enamel paint
AQUALAC Μ-801 and one or two coats of water enamel paint AQUALAC M-800.

Repeat the same procedure when using a varnish and apply one coat of water FARMAXYL M-99 and one or two coats of water varnish MARINLACK M-15 or alternatively one coat of solvent FARMAXYL M-16 and one or two coats of MARINLACK M-14.

 2.6  CRACKS ON THE PAINT


CAUSE :

The suitable undercoat has not been applied, in combination with intense temperature fluctuations.
The paint is of bad quality.
The second coat was applied before allowing the first to dry.


SUGGESTED SOLUTION:

Grind and polish the surface using a suitable piece of sandpaper and apply one coat of solvent enamel paint VICTORIA M-23 and one or two coats of enamel paint of SINLAC M-100 series following the instructions on the can.
Otherwise, after grinding you may apply one coat of water enamel paint
AQUALAC Μ-801 and one or two coats of water enamel paint AQUALAC M-800.

Repeat the same procedure when using a varnish and apply one coat of water FARMAXYL M-99 and one or two coats of water varnish MARINLACK M-16 or alternatively one coat of solvent FARMAXYL M-16 and one or two coats of MARINLACK M-14.

 2.7  THE ENAMEL PAINT OR VARNISH ARE STILL SOFT


CAUSE:

The paint or varnish were applied with an increased thickness, possibly due to insufficient thinning.
The required time in order for them to become sufficiently hard was not allowed to pass.
The preparation of the wooden surface was insufficient; it was not properly cleaned from oils, resins, etc.



SUGGESTED SOLUTION:

If the hardness of the paint is not sufficiently increased within a short period of time, then remove the paint using a paint thinner or mechanical means and apply one coat of solvent enamel paint VICTORIA M-23 and one or two coats of enamel paint of SINLAC M-100 series, following the instructions noted on the can.
Otherwise, after grinding you may apply one coat of water enamel paint
AQUALAC Μ-801 and one or two coats of water enamel paint AQUALAC M-800.
Follow the same procedure when using a varnish and apply one coat of water FARMAXYL M-99 and one or two coats of water varnish AQUALAC or alternatively one coat of solvent FARMAXYL M-16 and one or two coats of MARINLACK M-14.

 

MASONRY - EXTERNAL AREAS

 

3.1   THERE ARE DIFFERENCES OF THE SHADE ON THE PAINTED SURFACE



CAUSE:

The paint was thinned more than specified.
The surface has not been coated with a primer and/or there is increased porosity on some of its areas.
The paint was not properly applied due to improper method.
At the lower part of the structure there is moisture due to bad insulation.


SUGGESTED SOLUTION:

Apply VILEDUR M-20 primer and one or two coats of JET ACRYL Μ-6.
If the problem is due to moisture, first insulate and then follow the same painting procedure.


 3.2   THE PAINTED SURFACE SHOWS DIFFERENT LEVELS OF POLISH AND STAINS DUE TO SAGGING


CAUSE:

When the paint is applied under conditions of increased humidity, there is a delay in drying up; as a result, some of its ingredients are trapped on the surface and create such imperfections.


SUGGESTED SOLUTION:

Usually, this problem goes away or gets minimized after some time and after the paint has completely dried up.

Otherwise you may rinse with water and rub it gently with a soft cloth or sponge.



 3.3    THE PAINT HAS FADED AND ITS COLOUR HAS DETERIORATED


CAUSE:

Some colours are less resilient the sun. This category includes usually blue colours and some very bright reds and yellows.
The paint used was of poor quality and was not indicated for painting exterior surfaces.
The surface has not been coated with proper primer.
A strong detergent or thinner was used for cleaning the surface.


SUGGESTED SOLUTION:

    Reapply one or two coats with JET ACRYL M-6.

 3.4 WHITE MARKS APPEAR ON THE PAINTED SURFACE

CAUSE:

    This dust is scale that comes from the cement or plaster, which was not properly cleaned before painting.
    Inside the walk, there was trapped moisture or moisture is carried from the internal environment to the wall, or there is a broken gutter which leads to bringing the scale to surface.
    The paint has cracks in which moisture penetrates.

SUGGESTED SOLUTION:

    Remove all scale with mechanical means and water.  Wait until it is dry and apply stucco when necessary.  Then, apply solvent primer VILEDUR M-20 and apply one or two coats of JET ACRYL M-6.


 3.5 CREASED PAINTED SURFACE


CAUSE:

    The paint was applied at an increased thickness and/or the thinning of the paint was less than specified.
    The application was performed under very high temperatures.
    The surface had been previously exposed to increased humidity and was painted before drying up.


SUGGESTED SOLUTION:

    Use mechanical means and remove all creased surfaces and apply solvent primer VILEDUR M-20. Then, apply one or two coats of JET ACRYL M-6.



 3.6 MOULD APPEARS ON THE PAINTED SURFACE


CAUSE:

    Very dirty surfaces are the main reason for the growth of various microorganisms.
    The surface was not properly prepared.
    Increased humidity and temperature combined with insufficient lighting.


SUGGESTED SOLUTION:

    Remove mould using a bleaching agent, rinse it with lots of water, apply acrylic solvent primer VILEDUR M-20 and apply one or two coats of JET ACRYL M-6.



 3.7 CHALKING ON THE PAINT


CAUSE:

    The paint was unsuitable for external use or was of poor quality.
    The paint was exposed for an excessively large period to the sun.

SUGGESTED SOLUTION:

    Remove all dust from the surface caused by chalking, along with any other impurity.  It is suggested to use a wet cloth for this purpose.  Do not use a paint thinner.
    If chalking remains, apply acrylic solvent primer VILEDUR M-20 and apply one or two coats of JET ACRYL M-6.

 3.8. INSUFFICIENT COVER OF THE PAINT ON THE AREAS WITH STUCCO

CAUSE:

    No primer was applied or specific points were not properly covered with primer.
    In these areas, the surface was lean.
    The paint had a small cover capacity.

SUGGESTED SOLUTION:

     If the surface has not been coated with primer, apply acrylic solvent primer VILEDUR M-20 and one or two coats of JET ACRYL M-6.
    

 3.9 CRACKS OR BREAKS APPEAR ON THE PAINTED SURFACE


CAUSE:

    Incomplete preparation of the surface, e.g. no primer has been applied.
    Unsuitable or poor quality primer.
    The plaster or the surface have cracks.
    Poor quality paint with reduced elasticity and friction.
    Excessive thinning of the paint.
    Non-painted silica has been applied beforehand.

SUGGESTED SOLUTION:

    Remove all dilapidated parts of the surface using mechanical means and apply an acrylic solvent primer VILEDUR M-20.   Then, place stucco using acrylic, spatula-applied, stucco by MACHRO, apply again VILEDUR M-20 and apply one or two coats of JET ACRYL M-6.



 3.10 THE SURFACE IS PEELING OFF

CAUSE:

    The surface was not properly prepared.
    Unsuitable or poor quality primer was used.
    The paint applied was of bad quality.
    Presence of moisture.
    Various layers of paint of average quality have been applied on the surface over time, which stop the paint from “breathing”; as a result, the humidity coming from the internal area or from a gutter pushes the paint outwards leading to peeling off.

SUGGESTED SOLUTION:

    Remove with mechanical means all dilapidated parts of the surface.  If there is moisture, treat it.  Then, place stucco using acrylic stucco by MACHRO, apply acrylic solvent primer VILEDUR M-20 and apply two coats of JET ACRYL M-6.

 

MASONRY – INTERNAL AREAS

 

4.1 THERE ARE COLOUR DISCREPANCIES ON THE PAINTED SURFACE  

CAUSE:

    The paint has been thinned at a larger rate than specified and/or the surface is more porous at certain areas.
    The primer was not applied properly on the surface.
    The paint is of poor quality.

SUGGESTED SOLUTION:

    Apply an additional coat of paint, completely homogenized and thinned with the specified quantity of water.
    

 4.2 STAINS AND YELLOW MARKS APPEAR ON THE PAINTED SURFACE     

CAUSE:

    Insufficient ventilation, especially in areas used by smokers.
    Accumulated moisture.
    In areas with increased temperature due to radiators, stoves, etc.
    
SUGGESTED SOLUTION:  

    Apply one or two hands of VILEDUR solvent primer and after 24 hours one or two coats of JET PLAST M-5.
    Pay attention to the reason causing the yellow marks.  If this is due to moisture, you have to isolate it.  

 4.3 THE PAINTED SURFACE LOSSES ITS COLOUR WHEN CLEANING IT WITH A DETERGENT

CAUSE:

    Not enough time was allowed for the paint to dry up completely. It is suggested to let it dry for two (2) weeks before starting cleaning it.
    In combination with the above, possibly there was use of a rough rubbing tool in order to clean the surface.
    The detergent used for cleaning the surface was not indicated.  In such occasions, it is best to use the detergents used for dishes.
    The surface was painted with poor quality paint.
    
SUGGESTED SOLUTION:

    Wait until the detergent has dried up and apply one coat of JET PLAST M-5.

 4.4 THE PAINT IS RUNNING DURING APPLICATION ON VERTICAL SURFACES
    
CAUSE:

    The thinning of the paint was too strong and out of specifications.
    The paint was applied at a very thick layer.
    SUGGESTED SOLUTION:
    If the paint is still fresh, spread it evenly using a brush or roller.  
    If it has already dried up, grind the painted surface lightly and paint again with JET PLAST M-5.
    If there are leftovers of much thinned paint, add a sufficient quantity of un-thinned paint.

 4.5 THE PAINTED SURFACE HAS SWOLLEN
    
CAUSE:

    Presence of internal moisture; you must find its cause and treat it.
    The surface was painted while it was still damp.
    The paint was applied at very high ambient temperature or the surface was warm due to an external source of heat.  
    The layer of the paint was very thick.

SUGGESTED SOLUTION:

    Rub the surface at the swollen areas and apply stucco using acrylic stucco by MACHRO.  Then, apply primer with micronized water primer M-9 and apply two coats of JET PLAST M-5.  

 4.6 CRACKS OR BREAKS APPEAR ON THE PAINTED SURFACE     

CAUSE:

    Incomplete preparation of the surface, e.g. no primer has been applied.
    Unsuitable or poor quality primer.
    There may be cracks on the plaster.
    Poor quality paint.
    Excessive thinning of the paint.


SUGGESTED SOLUTION:

    Remove all dilapidated parts of the surface using mechanical means and apply an micronized water primer M-9 or solvent primer VILEDUR M-20.  Then, place stucco using acrylic, spatula-applied, stucco by MACHRO, apply again one of the suggested primers and apply one or two coats of JET ACRYL M-5.

 4.7 MARKS FROM THE BRUSH OR ROLLER APPEAR ON THE SURFACE  

CAUSE:

    Inappropriate painting tools were used.
    The paint is of poor quality or has a reduced cover capacity.
    An erroneous technique was used when applying the paint.
    It was tried to repaint while the paint was still fresh.
    
SUGGESTED SOLUTION:

    For a minor problem, just repaint by applying one or two coats of JET PLAST M-5.
    If the problem is larger, rub with a suitable piece of sandpaper, apply primer with micronized water primer M-9 or with solvent primer VILEDUR M-20 and apply one or two coats of JET PLAST M-5.

 4.8 THE PAINT HAS CRACKED IN AREAS WITH STUCCO

CAUSE:

    Bad quality stucco was applied.
    After the application of the stucco, no suitable primer was applied.

SUGGESTED SOLUTION:

    Remove all dilapidated materials using mechanical means.  Apply micronized plastic primer M-9 or alternatively acrylic solvent primer VILEDUR M-20.  Then, apply acrylic, spatula-applied, stucco by MACHRO, apply primer again and then apply one or two coats of JET PLAST M-5.

 4.9 MOULD APPEARS ON THE PAINTED SURFACE      

CAUSE:

    Very dirty surfaces are the main reason for the growth of various microorganisms.
    The surface was not properly prepared.
    Increased humidity and temperature combined with insufficient lighting.
    
SUGGESTED SOLUTION:

    Remove mould using a bleaching agent, rinse it with lots of water, apply primer using micronized plastic primer M-9 or acrylic solvent primer VILEDUR M-20 and apply one or two coats of anti-mould paint JET COLOR M-91.

 4.10 WHEN APPLYING THE PAINT, BUBBLES AND SMALL CRATERS APPEAR

CAUSE:

    Prior to application, the paint was strongly mixed, usually using strong mechanical means and/or the paint thinning was less than required.
    Inappropriate application tools were used.
    Paint was applied under high temperatures.
    The color is of poor quality.
    The surface painted was not coated with primer and was porous.
    
SUGGESTED SOLUTION:

    Rub with a piece of sandpaper in order to smoothen out the bubbles and/or craters and repaint by applying one or two coats of JET PLAST M-5.
    With regard to a minor problem, then just apply one or two coats of JET PLAST M-5.
    With regard to a surface without any primer coat, rub with a piece of sandpaper until the bubbles and/or craters are smoothened out, apply micronized plastic primer M-9 and repaint by applying one or two coats of JET PLAST M-5.