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How to paint a cement floor?

How to paint a cement floor?



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Without coating, your cement floors are damaged quickly. Dust, marks, cracks, stains, they are particularly exposed. Painting is the ideal solution to protect this type of soil. For an optimal result, the preparation counts as much as the installation of the paint. Find more articles on the theme: Painting work quotes

Step 1: before you start

Plan everything you will need. - Detergent - White spirit - Sanding stone - Hanging primer (for porous floors) - Special oil-based paintbrush or resurfacing brush to paint edges and angles - Special floor roller with telescopic handle - Special cement floor paint - Combination, gloves, mask - Masking tape to prevent spills on the wall Check the condition of the floor. If your floor is imperfect, no paint will hold. This is particularly the case on a wet cement floor which must be treated. To find out if this is the case, take the test which consists of placing a sheet of cellophane or aluminum paper on the floor. Secure it with tape. Wait 3 days and then remove it. If you notice traces of condensation, your floor should be treated against moisture. Your paint will hold poorly if your soil is too porous or not porous enough. To find out and be able to paint directly, pour a little water on the floor. It must penetrate slowly. The drops should not stay on the surface or be absorbed too quickly. If your soil is porous, apply a primer to the roller and let it dry.

2nd step: prepare your soil

This step is essential before starting to paint. Fill in the small holes and cracks on the cement floor with filling plaster or speedy cement. To do this: - Clean the holes with a wet brush and widen them if necessary to fill them better - With spatula, fill them with plaster or speedy cement - Leave to dry - Sand (with a sanding stone) to smooth the surface With a spatula, scrape the roughness of the floor (trace of glue, old coating, etc.). Your surface should be perfectly smooth. Finally, if your soil is not flat and has ripples or curvatures, you will need to re-level. Before painting, clean the floor to remove stains. Vacuum and wash with a product with high cleaning and degreasing power then let dry.

3rd step: start painting

Is your floor ready? You can start the painting phase after protecting the baseboards and the bottom of your walls with masking tape. Start by painting the corners and edges of the wall. Then attack the ground in small areas starting from a wall, side opposite the door. Plan to finish at the door to be able to exit. Apply a first coat of paint previously diluted with 10% of suitable solvent or white spirit to promote adhesion. Let dry as directed by the manufacturer. You will always paint by applying parallel strips on the floor and then cross the passages of the roller to properly cover the entire painted surface. Apply a second layer, undiluted. If the ground is intended to receive an intensive passage, pass a third layer. Tips: Avoid painting in hot weather, when it is particularly cold or when the weather is humid. Wait 3 days to walk normally on the ground or drive there if it is a garage.