How Do You Plaster Interior Concrete Block Walls?
Add a layer of cement plaster to unfinished interior concrete block walls in order to add insulation, create texture or patch damaged areas. A basic plaster is made with a mixture of cement, masonry sand and water; however, different things can be added, depending on how you want the plaster to look. Add animal hair to create texture, as well as strength. Add a cement coloring agent to create a colored plaster. Hydrated lime can also be optionally added to plasticize the mortar and make it more resistant to cracking. Add lime, especially if you are working with very thin layers of plaster. Create a slurry. Mix equal parts of cement and sand, and add enough water to make a soupy mix, or slurry. Coat the walls with the slurry before plastering to help ensure adequate bonding of the plaster to the wall. Paint or trowel a thin layer (not more than 1/8 inch) of the slurry onto the wall. If necessary, work in small sections at a time so the slurry won’t dry out while applying plaster. If nec
