The operation process of painting wooden floors with a paintbrush is as follows:
First, preparatory work
Check the condition of the floor
Carefully inspect the wooden floor to see if there are any loose, cracked or damaged areas. If it is loose, it needs to be fixed with nails and make sure the nail heads are flattened to prevent the floor from being scratched during subsequent sanding.
Clean the floor
Use a vacuum cleaner to thoroughly remove dust and debris from the floor. Special attention should be paid to cleaning the dust in the floor gaps, as this dust can affect the adhesion of the paint.
Use a feather duster or a soft cloth to wipe the walls and window sills, ensuring the surrounding environment is clean and avoiding dust from settling on the floor.
Floor sanding
Use sandpaper to sand the floor to remove old paint films, stains and uneven areas. When sanding, you can first use a coarser sandpaper (such as 60 mesh) for initial sanding, and then use a finer sandpaper (such as 80 mesh, 120 mesh) for fine sanding until the floor surface is smooth and flat.
During the sanding process, follow the grain direction of the floor to avoid horizontal sanding which may cause scratches on the floor surface.
Second, apply the primer
Mix the primer
According to the instructions of the primer, mix the primer and the thinner evenly in proportion. Generally speaking, the primer needs to be diluted with a thinner to facilitate application and speed up the drying process.
Apply primer
Use a wool brush or a high-quality synthetic fiber brush to dip the primer and apply it evenly on the floor. When painting, make sure every corner and crevices are covered to avoid any missed areas.
The primer usually needs to be applied in two coats. After the first coat dries, the second coat should be applied. When applying the second coat, make sure it is perpendicular to the direction of the first coat to enhance the adhesion of the paint film.
Sanding the primer
After the primer is completely dry, use fine sandpaper (such as 240-mesh water sandpaper) to gently sand the floor to remove particles and uneven areas on the surface of the primer. After sanding, wipe the floor with a clean cloth to remove the dust produced by sanding.
Third, filling gaps and making repairs
Fill in the gaps
Fill the gaps in the floor with putty or grout of a color similar to that of the floor. You can first mix gypsum putty with alkyd varnish, then fill it into the gaps and smooth it out with a scraper.
After the putty dries, use sandpaper to sand the gaps to make them flush with the floor surface.
Repair damage
For minor damages or scratches on the floor, putty can be used for repair. When making repairs, make sure the putty is of a similar color to the floor and sand it smooth.
Fourth, apply the topcoat
Mix the topcoat
According to the instructions of the topcoat, mix the topcoat and thinner evenly in proportion. Generally speaking, topcoat needs to be diluted with a thinner to facilitate application and the drying speed should be controlled.
Apply topcoat
Use a wool brush or synthetic fiber brush to dip the topcoat and apply it evenly on the floor. When painting, pay attention to controlling the amount of paint used to avoid excessive use which may cause sagging.
The topcoat usually needs to be applied three or more times to achieve the desired gloss and protective effect. Before each coat, make sure the previous one is completely dry and gently sand it with fine sandpaper.
Sanding the topcoat
After each coat of topcoat has dried, use fine sandpaper (such as 240-mesh water sandpaper) to gently sand the floor to remove surface particles and uneven areas. After sanding, wipe the floor with a clean cloth to remove the dust produced by sanding.
Fifth, post-maintenance
Avoid being crushed by heavy objects
Avoid placing heavy objects or walking on the floor before the floor paint is completely dry to prevent scratching the floor or leaving footprints.
Keep well-ventilated
During the drying process of floor paint, maintaining good indoor ventilation helps the paint dry and the release of harmful gases.
Regular cleaning
After the floor paint dries, clean the floor regularly with a soft cloth or mop. Avoid scratching the floor surface with hard or sharp objects.
Sixth, Precautions
Choose the appropriate paint
Choose the appropriate type of paint (such as water-based paint, oil-based paint, etc.) based on the material of the wooden floor and the desired effect. Water-based paint is environmentally friendly, but its drying speed is relatively slow. Oil-based paint dries quickly, but its environmental friendliness is relatively poor.
Control the amount of paint used
When painting, control the amount of paint used to avoid excessive use which may cause sagging or an uneven surface after drying.
Pay attention to the construction temperature
The construction temperature should be maintained above 10 degrees Celsius to avoid slow or no drying of the paint due to construction in a low-temperature environment.
Personal protection
During the process of painting, appropriate protective equipment (such as gloves, masks, goggles, etc.) should be worn to avoid inhaling harmful gases or paint splashing onto the skin.