How to paint exteriors
When the months that provide the best weather arrive, usually months of vacation for most of us, it's the time of year that many people take to paint the interior and exterior of their homes.For those who have some doubts about what to do and how to do it, here are some general tips. Do not forget that painting should always be planned out carefully and thoroughly, so you don't have to repeat the same job every year. An inaccurate assessment and a poorly executed paint scheme can be as bad as applying a low-quality paint, so try and evaluate these factors, and always ask for several opinions to decide what solution suits you best. If you have any questions, please contact me with your questions.
The façade of a house must always be in a good state of conservation in order to effectively protect the walls and the house itself.
HOW TO CHOOSE THE PAINT FOR THE FAÇADE
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| Conditions of the façade | Type of paint | Characteristics |
| In a good state. Without deteriorations. | Veova | It last between 2 and 5 years depending on the quality of the paint. |
| Affected by extreme weather conditions. | 100% Acrílica | It lasts up to 10 years. Keeps the colors reliable over time (pigments of hight light fastness). |
| Cracked or micro craked walls. | Elastic | It lasts up to 10 years. It coversa cracks up to 2mm |
The façade must be thoroughly dried up before being painted.
The walls of a brand-new house should dry up for at least 3 months, depending on the area where the house was built, as well as the time of the year and atmospheric conditions where the house is located.
Before painting a façade, it's important to carry out a full assessment of the issues that may exist on the structure. This assessment is essential to determine what solutions suits you best.
ASSESSMENTS AND SOLUTIONS
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| Condition | Tests | Solutions |
| Cracked | With an x-acto pencil, draw deep horizontal and then vertical lines. Perform this operation when the weather is dry and also on dry walls. | If the coating falls even partially, it will be necessay to remove it nd apply an adhesive primer. |
| Dusty surface | Run your hand over the surface. | If your hand gets dirty with dust, wash the wall at high pressure (40 bar) before applying an adhesive primer. |
| Permeability | Wash the wall when the weather is dry and in the shade. | if the water is immediately absorved, apply a paint scheme wich ia as waterproof as possible. |
| Adherence | Strike the edges of the craks with a hammer or a mallet. | If the surface appears to be hollow, remove the detached parts before applying the appropriate fill. Take into account that you will have to wait 28 days to be able to paint ober it. |
| Fragility | Use a hard brush on the most deteriorated surfaces. | If the paint splinter, remove all areas with low adherence, and then apply an adhsive primer. |
| Stains | Some moss and green or red spots may appear in the humid areas of the wall. | If you find micro-organisms, mosses or mould, it is necessary to brush the surface and then wash it at high pressure (40 bar) before applying a cleaning solution that will permanently remove them. |
EXTERIOR PAINT SCHEME - WALLS
| Surfaces | Primer | Paint | Type of Finsh |
| Normal Sate Plaster | Anti-alkaline Primer | Smooth Plastic Veova Paint | Matte Smooth Paint |
| Normal Sate Plaster | Anti-alkaline Primer | 100% Acrylic Smooth Plastic Paint | Silky Matt Paint |
| Normal Sate Plaster | Anti-alkaline Primer | Elastic Membrance Paint | Waterproof Smooth Paint |
| Deteriorated or very absorvbent plaster | Sealant or Anti-Alkaline Primer | Smooth Plastic Veova Paint | Matter Smooth Paint |
| Deteriorated or very absorvbent plaster | Sealant or Anti-Alkaline Primer | 100% Acrylic Smooth Plastic Paint | Silky Matt Paint |
| Deteriorated or very absorvbent plaster | Sealant or Anti-Alkaline Primer | Elastic Membrance Paint | Waterproof Smooth Paint |
EXTERIOR PAINT SCHEME - WOODS
| Surfaces | Primer | Paint | Type of Finish |
| Wood | Undercoat primer | Water based or Synthetic Enamel | Smooth Glossy, Half-gloss or Mate Paint |
| Wood | Sealing Primer | Synthetic or water based Varnish | Smooth Glossy, Half-gloss or Mate Paint |
EXTERIOR PAINT SCHEME - METALS
| Surfaces | Primer | Paint | Type of Finish |
| Iron | Red OxidePrimer or iron Oxide | Water based or Synthetic Enamel | Smooth Glossy, Half-gloss or Matte Paint |
| Iron | Without Primer | Special Enamel for Direct Application | Smooth Glossy, Half-gloss or Matte Paint |
| Galvanised | Adhesive Primer | Water based or Synthetic Enamel | Smooth Glossy, Half-gloss or Matte Paint |
| Galvanised | Without Primer | Special Enamel for Direct Application | Smooth Glossy, Half-gloss or Matte Paint |
EXTERIOR PAINT SCHEME - OTHER
| Surfaces | Primer | Paint | Type of Finish |
| Exposed Plaster, Stone, Clay Tiles | Water resistant, hydrophobic | Without | Colourless without Changing the Aspect of the Bracket |
| Concrete, Stone, Stucoo, Brick | Without Primer | Water based Varnish for concrete | Smooth Glossy, half-gloss or Matte Paint |
| Roof | Without Primer | 100% Acrylic Smoth Plastic Paint | Silky Matt Paint |