How To Paint Facades With Dampness

Renew the exterior wall of your house, protect it from humidity, or give it a change of look in the most economical way. How? Doing it yourself. Here is a practical guide to doing it step by step, how to insulate from moisture, which waterproofing paint is right for you, and color suggestions for facades.

Waterproofing Paints For Exterior Facades

The best remedy against dampness on the facade is to prevent it with waterproofing paint. Waterproofing paints not only preserve the facades but also decorate them. For example, for ceramic or stone facades, the paint must insulate from moisture and transpire vapor from the interior to the exterior, like this polyurethane membrane waterproofing paint:

This type of paints for exterior walls of facades are elastic AND very resistant to the infiltration of moisture. Which waterproofing paint for exteriors is the most suitable? It depends on the area and the use that will be given to it.

When dealing with exterior walls and ceramic and stone facades, acrylic paints are the most recommended. They must be applied on dry and clean surfaces of dirt. It has great properties as a thermal insulator; they are resistant and offer various aesthetic solutions. They come in various colors, tones, and finishes.

Other products with a high waterproofing capacity are rubber or liquid silicones (in areas that cannot be walked on). They are recommended to seal joints, cracks, and fissures.

How To Repair The Damage And Apply Waterproofing Paint On Facades

The time has come to roll up your sleeves and put an end to that dampness that spoils your facade. Once the humidity is located, as we mentioned above, the first thing to do is to discover the origin of the deterioration on the outside and repair it. Then follow these tips step by step:

Remove deteriorated paint, dust, dirt, or any badly adhered element to the facade.

Fix and level the imperfections of the surface with putty or plaster, depending on the facade’s nature, and let it dry. Sand the wall smooth and make sure it is clean so the waterproofing paint sets properly.

Paint with the waterproofing that best suits the exterior wall. In the case of house facades, acrylic waterproofing paint is the recommended choice. Use the appropriate instrument for the surface’s size to be painted: brush, roller, sponge roller (to adapt to rough surfaces), or paint gun. 

Apply the waterproofing paint on the entire surface, and not only on the damaged part. Thus avoid future damage.

Wait for it to be dry. The waiting time is described in the manufacturer’s instructions.

Calculate the paint needed to paint your facade, taking into account the m2 of the wall to be painted. To find out, multiply the width by the height of the wall and subtract the area of ​​doors and windows. Also, think about the number of coats you are going to apply.

Remember, follow the manufacturer’s instructions on waterproofing paints or products to preserve and rehabilitate facades.

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