Concrete walls used to be found only in basements or around the outside perimeter of a garden. But as concrete becomes increasingly popular as a structural building material, it is not unusual to see interior walls coated with concrete applications. This is especially true of the special pigmented concretes available to customise any surface in your home. While outdoor concrete surfaces are often textured and rough, you can make concrete walls that are nearly as smooth as glass.
- Skill level:
- Moderately Easy
Things you need
- Fine-grit sandpaper
- Fibreglass-mesh tape
- Concrete bond
- Short-napped paint roller
- Straight metal trowel
- Prepared concrete
Sand any rough or uneven areas on the drywall with fine-grit sandpaper. Rub the surface with your hand so it is smooth all over. Remove the dust and debris by wiping the wall down thoroughly with towels.
Apply long, straight strips of fibreglass-mesh tape along the seams of the drywall. Do not leave open spaces. Overlap pieces of tape if necessary to cover larger gaps.
Cover the entire wall with a moderate application of concrete bond, using a short-napped paint roller. Roll the bond on in even lines and make sure it does not drip. Wait three to five minutes for the bond to set up.
Apply concrete onto the surface of the wall over the adhesive bond with a trowel. Keep the concrete application thinner than 1/2 inch. Spread and smooth the concrete with the trowel so that it is even and level all over. Let the first layer of concrete sit so that the moisture evaporates from the top.
Apply a second, 1/2-inch layer of the concrete with the trowel just like you did the first layer. Drag the flat of the trowel across the concrete in straight lines to smooth the surface. Allow the concrete to dry five days.
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