Repainting Old Concrete Walls

Wash the wall to remove any grease.

Repainting old concrete walls.

When you have a basement you will either have a concrete foundation or cinder block foundation. Aged concrete surfaces are coated with various things such as staining compounds sealants and of course older paint all of which present difficulties. To paint concrete start by cleaning it with soap and water and repairing any cracks or uneven surfaces. Use a masonry sealer such as thoroseal that also patches.

These are the steps for repainting your wall. Surface preparation for old painted walls is a little different from new concrete because previously painted concrete surfaces can have an existing problem that needs to be treated first. You must choose the appropriate type of concrete paint determine if the wall is sealed from moisture and apply primer prior to painting the wall. To prepare for repainting.

Repainting concrete surfaces is a bit more demanding than painting freshly laid concrete. If you re painting a concrete floor remember to start on the far side of the room so you end up finishing near a doorway or another convenient stepping off point. I have 67 feet of an exterior 40 year old cinder block wall on my property. Rinse the wall well and let dry for several days.

Clean the concrete walls with a trisodium phosphate solution and a scrub brush. Once you re done with that apply a layer of concrete paint primer with a roller and let it dry. If you re painting indoor concrete you ll also want to apply a concrete sealant so moisture doesn t mess up your paint job. By painting the walls or foundation you increase the appeal of the space but also it improves the moisture control from the wall.

Use a scraper to remove the old paint from the wall. The solution will remove the grease and oil which might prevent the new paint from sticking. Water moves easily through porous concrete so sealing interior walls is necessary to prevent moisture from seeping in promoting mold growth and that cold damp basement feel. However some of the white oil based has peeled off also to reveal the.

It has concrete stain oil based paint then acrylic paint in that order i am assuming the last paint was acrylic because that is most of what is peeling away from the white oil based underneath. Outdoors get rid of old paint with a power washer rents for 40 to 75 per day. As a general step you must always observe the condition of the surface that needs repainting. In other words don t paint.

However there are some things to consider when painting a concrete wall. Painting a concrete wall can spruce up an area or make it blend in with the rest of the area s décor.