What is the Best Way to Do House Exterior Painting?

 

How to paint the house's exterior - including all preparatory work and the different preliminary, intermediate and final costs will be explained in this article.

Exterior painting is not an easy take, so you must read all the points given below carefully. 

How start Exterior painting?

When the house's exterior no longer looks beautiful, it's time for a new coat of paint. Before you start painting the house exterior, however, do the necessary preparatory work.

This work includes a thorough cleaning of the exterior - for example, with a high-pressure cleaner. Also, repair damage - the house wall may even need new plaster. Finally, thanks to the carefully applied primer, you will need less paint and less exterior paint later. 

Thorough preparatory work when painting the house exterior is therefore worthwhile in several ways. How often you have to repaint the exterior depends on the selected exterior color and the given substrate. Which paint to use for Exterior painting? - Dispersion paints are suitable for robust and colourful exterior coatings, while silicate paints work for cement-bound, porous substrates. Breathable lime paints are mainly used for pastel shades but are not suitable for heavily insulated facades. Polymer resin paints are suitable for mineral plasters, concrete and brickwork.

You first paint the corner and cracks. Then the primer follows, to which you can also add water and an anti-algae or anti-mould concentrate. Then you apply at least one intermediate coat. 

Finally, apply the final coat of undiluted exterior paint. This painting is done lengthways and crossways until the entire surface is covered satisfactorily.

Examination of the exterior for load-bearing capacity

At a glance

• In-deep check the load bearing capacity
• If necessary, remove exterior defects

That's how it is done.

Swipe the exterior. If the plaster trickles or the old exterior paint is peeling off easily, remove the defective areas over a large area before repainting.

You can also check the load-bearing capacity of the exterior using an adhesive tape test. 

To do this, you carve the test area with a utility knife, a lightweight, most minor masking tape firmly on it and rip the tape off sharply.

Thoroughly clean the substrate before Exterior painting

At a glance

• Sweep the exterior and clean it with a high-pressure cleaner
• Remove moss and algae growth
• Collect wastewater and dispose of it properly

That's how it is done

All substrates must be clean, dry and dust-free before priming and painting with the paint. To do this, you first roughly sweep the exterior and clean the outer wall thoroughly with a high-pressure cleaner. 

You also remove the growth of moss and algae carefully - the high-pressure cleaner also provides valuable support here.

It is a legal requirement that you collect all wastewater, paint residues, blasting sand and debris and dispose of them properly. To do this, shield the workplace on all sides and in total height with a suitable tarpaulin. You can obtain precise information on correct disposal from your responsible environmental authority.

Repair the exterior and mask off sensitive areas

At a glance

• Repair cracks and holes
• Apply new plaster to defective areas if necessary
• Mask off sensitive areas with masking film

That's how it is done.

Plaster over the defective parts of an exterior wall. Then you tape off doors, windows and other sensitive areas of the exterior (e.g. outside lights, bells and ventilation flaps) with adhesive tape and protective film to protect them from dirt and damage.

Test absorbency and prime if necessary

At a glance

• Test absorbency with a wet sponge
• Apply primer if necessary

That's how it is done

You can test the absorbency of the exterior substrate with a wet sponge. If the exterior absorbs moisture, carefully prime the house wall. Apply the primer generously with a surface brush. Be careful not to work in direct sunlight.

As soon as the primer has been applied according to the manufacturer's instructions, you start painting the exterior.

Pre-paint corners and angles of the house exterior

At a glance

• Pre-paint corners and angles with the brush
• If necessary, delete specific details or elements

That's how it is done

The actual exterior painting begins with painting the corners and angles of the exterior. Here you apply the paint with the brush.

You can also paint architectural details, particular elements or surfaces on the house wall with the brush - especially if these later appear in a contrasting colour.

Pre- and intermediate coats

At a glance

• Carry out a primer with thinned paint
• It is followed by at least one intermediate coat
• If necessary, use anti-mould concentrate and algae

That's how it is done

You use the exterior paint for the preliminary and intermediate coats. Depending on the manufacturer's instructions, you can dilute the primer with 5% to 15% water. The exterior paint diluted with water reduces consumption when painting.

To better protect the paint and plaster, add a fungicide (anti-mould concentrate) and an algicide to the paint, if necessary. The concentrates effectively prevent the formation of mould and algae.

Final coat: exterior painting

At a glance

• Apply a final coat of paint with undiluted paint
• Stroke lengthways, crossways and again lengthways

That's how it is done

The final coating of the exterior is carried out with undiluted paint in three steps: The paint on the paint roller is first painted lengthways, then crossways and then again lengthways. 

Finally, you roll the individual strips with the paint wet on wet. It is how you achieve the highest opacity for the exterior of your house.